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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => Project Classic Motobricks => Topic started by: Filmcamera on September 22, 2016, 06:36:55 PM

Title: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 22, 2016, 06:36:55 PM
In theory I finally get my bike back after 18 weeks - yes 18 weeks - sitting in a bonded warehouse waiting for customs to decide how much tax I have to pay on it.  By 'bonded warehouse' read parking lot out in the rain during the height of the rainy season.  I am assuming the battery will be flat but wondered what else I should give a quick once over before trying to get it running to drive it home. It has been sitting out in torrential rain, hot sun and now this last week volcanic ash - one of the many volcanoes around here has been erupting for a week and covering everything with a layer of ash!

 I plan to take some tools with me, jumper cables, a set of wrenches and some screwdrivers etc, maybe some WD and electrical spray but was wondering if anybody has some tips for an essential mobile brick toolkit so I don't end up sitting there going damn if only I had ___ with me.

By the way the tax they decided I had to pay ended up being basically double what I paid for the bike!

Nonetheless onwards an upwards, time to start the process of making this bike great again.
Title: Re: K100RS parked for four months outside in all weathers
Post by: K1300S on September 22, 2016, 06:45:44 PM
i would bring a truck and trailer.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 22, 2016, 06:47:54 PM
Yeah I was hoping to avoid that but you may be right..

Ever the optimist I will turn up with good vibes, fingers crossed and some jumper cables.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Chaos on September 22, 2016, 08:01:08 PM
I've had batteries so dead they couldn't even be jumped.  Might want to just bring a fresh one. Theoretically the bike should be able to be left out in the weather, I'd guess it will be like that first start up after a long winter hibernation.  Bring a tire pump too. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: stokester on September 22, 2016, 08:01:28 PM
I would have a new battery with me along with tools and something to inflate the tires.

Some fresh gas and a way to siphon or drain what is in the tank may be necessary as well.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 22, 2016, 08:23:11 PM
The battery was brand new a week before it went off to storage so I am hoping it will be OK.  Good call on the air pump and gas thanks

Sent from my SM-G935F using Tapatalk

Title: Re: K100RS parked for four months outside in all weathers
Post by: kioolt on September 22, 2016, 08:49:39 PM
I've got a second home where I keep my 91 K100LT.  Usually when I leave this home I disconnect the battery so it won't discharge because of whatever draws a little current even with the key off.  I have left it several time for at least six months this way.  The only thing that I do when I return is to hook the battery back up and charge it.  It usually starts right up.  It is not stored outside in the conditions you mentioned.   
Title: Re: K100RS parked for four months outside in all weathers
Post by: F14CRAZY on September 23, 2016, 07:15:01 AM
If the seal between the gas door and the tank isn't in good shape some rain may have gotten into the tank. I've had that issue
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on September 23, 2016, 08:05:00 AM
I plan to take some tools with me, jumper cables, a set of wrenches and some screwdrivers etc, maybe some WD and electrical spray but was wondering if anybody has some tips for an essential mobile brick toolkit so I don't end up sitting there going damn if only I had ___ with me.
In addition to the previous members important suggestions, I affirm your bringing WD 40 and electronic cleaner, with their narrow application tubes. Bring some rags with you and a full complement of fuses. Bring a flashlight. Bring a wire coat hanger.

You might need to spray WD into the ignition key and fuel cap locks. Clean the main plug and be certain it is installed tightly.  Look into the air box intake pipe. Open up the air box and take a look at the filter. Critters may have nested in those places and you might stall on the road when the nest and debris clogs the filter. Look into the exhaust pipe for the same reason. A coat hanger wire can be inserted in the pipe to extract debris. If anything is clogging air intake or the exhaust, you might drain your battery trying to start the bike. Check the rear wheel lugs for tightness and the front axle too.

If the battery has sufficient charge—I doubt it will if it hadn't been disconnected during the storage—once it lights up, ride it as long as you can, especially if the weather is fair. Put an hour or two on it to help dry all the components and elevate your mood!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 23, 2016, 07:25:16 PM
She lives!!

The battery was super flat of course but I connected jumper cables and gave it 20 mins then it did start if very reluctantly.  When I parked it I had left it on the center stand but at some point someone moved it and left it on the side stand.  That meant when I did get her going there was huge amounts of smoke to start with.

A big thanks to stokester for suggesting a pump - both tires were at 15 psi...

It is running kind of rough but running.

Now I can finally start the process of making it all new again.


The bad news is that they had put paperwork covered with scotch tape on the tank. Over the months water has got in behind it and the tank if pretty badly damaged. 

They do, in theory, have insurance so I will start the process of a claim but don't hold out much hope.

Luckily I had already planned on repainting anyway so...

[/img]g]https://www.dropbox.com/s/91gec6bdhelvn6p/e2e204dc-1935-48ae-89af-c3718cec5b82%20%281%29.jpeg?dl=0[/img]
(https://www.dropbox.com/s/aoqsyhypsw4c1fr/ed15fab7-c6b9-4d6b-be89-0140c6a278dd.jpeg?dl=0)

Title: Re: K100RS parked for four months outside in all weathers
Post by: stokester on September 23, 2016, 07:33:05 PM
Yea!!!

Now it is time to put in new fluids, filters and clean the connectors...  and RIDE!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on September 23, 2016, 09:48:52 PM
 :2thumbup:  Ride on!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Revrdmark on September 27, 2016, 11:56:18 AM
A insurance claim check would be a nice addition to repair treasury. I'd follow up with that for sure! For what it's worth storage companies and tow companies do more damage to bikes than most accidents in my opinion!


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 29, 2016, 02:46:19 PM
So as reported in this thread http://www.motobrick.com/index.php?topic=580.msg71347#msg71347 (http://www.motobrick.com/index.php?topic=580.msg71347#msg71347) I have started looking at the electrics and have a mountain to climb but there is no rush - the dry season doesn't start for a couple of months yet.

I will try and consolidate all my posts issues in here from now on

Basically I am waiting for the screw extractor set to arrive http://www.motobrick.com/index.php/topic,9005.msg71170.html#msg71170 (http://www.motobrick.com/index.php/topic,9005.msg71170.html#msg71170) because tehre are tons of busted allens on the bike.

So in the meantime I have been putting together my shopping list from MaxBMW

(http://imageshack.com/a/img921/4980/YmkCnf.png)

Any other essential stuff I should replace? The air filter I had already ordered and also the oil filter.  My fuel gauge doesn't work but at $200 the gauge in the tank can wait.

The oil pressure switch is because I discovered this yesterday

(http://imageshack.com/a/img924/9986/8GWEUH.jpg)
Title: Re: K100RS parked for four months outside in all weathers
Post by: racket on September 29, 2016, 02:56:09 PM
Lol, $8 for a screw and $27 for a "rubber mount."

Have you looked at BeemerBoneyard or some other online retailers for those parts?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 29, 2016, 02:59:55 PM
Yeah I plan to look for used parts for sure . I was just using the fiche section of MaxBMW to identify the parts I need and get the part numbers... and it was just easier to copy paste it all into an excel so I can keep tabs on everything - I want to try and order as much as I can in one go since things have to come down by sea which takes a two or three weeks - by air is quicker (about a week) but costs up to 100% the cost of the thing you are shipping....
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on September 29, 2016, 03:07:17 PM
I have a large can of hardware I removed from my bricks when I installed stainless fasteners.  If you are willing to pay postage I can put a package together that might cover a bunch of nuts and bolts.  I will also take a look at your list and see if there might be any spares I might be able to contribute. 

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 29, 2016, 03:09:39 PM
Great thanks. I actually have the stainless kit from desmo but it is mainly things like body panels, doesn't cover the bolts that are messed up on my forks, disc brakes and calipers. Obviously all hoses I want to buy new - though even an old one has to be better than the transmission coolant hose currently being used as a fuel hose!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 01, 2016, 07:20:08 AM
I have the chance to buy a full K1100RS fairing to use instead of my messed up original one.  I know other people have fitted them before and was wondering how hard/easy it is and whether things like the knee side covers from my fairing fit or whether I need to get ones for the K1100RS.

I found this thread on the site http://www.motobrick.com/index.php?topic=3758.0 (http://www.motobrick.com/index.php?topic=3758.0)

But I am not exactly clear how much of the fairing he got with it.  The one I am buying does not have the side parts so I have to either find some or use my existing one

These are the bits I mean

(http://imageshack.com/a/img924/7266/DRyhbb.jpg)
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on October 01, 2016, 11:18:50 AM
I did the fairing swap on my K100RS a year ago.  The 1100 fairing works with all the old 100 brackets, but needs the rear mount for the belly pan which is not a big deal, I made my own with a chunk of stainless plate in an evening.  Wish I knew why people don't save it when they strip the pan off the bike

The knee pads are not interchangeable between the two fairings.  The attachment at the bottom is different for the 1100 and when I did mine I couldn't figure out a good way to make the old ones work.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 01, 2016, 06:26:25 PM
Quote
The knee pads are not interchangeable between the two fairings.  The attachment at the bottom is different for the 1100 and when I did mine I couldn't figure out a good way to make the old ones work.

So Gryph did you manage to find some for a K1100RS or do you just do without?  If you did find some, where?
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on October 02, 2016, 10:53:39 AM
Took about two months watching the K1100 listings on eBay.
Title: Re: K100RS parked for four months outside in all weathers
Post by: 84K100RT on October 02, 2016, 03:52:54 PM
The 8 x 13 hose [meter] will also do the FPR hose. Its all the same hose.

Hose clips should really be screw type so you can remove them for maintenance. Make the new ones at the front of t tank a bit longer so you can slide the tank back for access to the radiator cap and for lifting the rear to access the electrical box.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 05, 2016, 11:02:56 AM
I am trying to work out my nightmare of a loom.

There are two empty connectors, one either side and also a cut black and brown  wire combo up near the dash. I am thinking they are the ABS connections?  It has been removed and the ABS switch on the dash has no wire connected to it.

Can anyone confirm?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on October 05, 2016, 02:11:23 PM
All Connectors which have a blue housing is for the ABS.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 05, 2016, 02:12:56 PM
great thanks
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 11, 2016, 08:14:48 PM
The extractor set has finally arrived - and it would be the week I cannot do anything to the bike until the weekend...

Fingers crossed for Saturday
Title: Re: K100RS parked for four months outside in all weathers
Post by: stokester on October 11, 2016, 08:23:04 PM
The extractor set has finally arrived - and it would be the week I cannot do anything to the bike until the weekend...

Fingers crossed for Saturday
Looks just like my MATCO set with left-hand drill bits and the extractors to fit.

Take it easy and be patient.  Breaking off an extractor brings all kinds of trouble.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on October 11, 2016, 08:54:28 PM
The extractor set has finally arrived -

Not really needed, as you just could have drilled the head of the screw.

Be aware that it's a special screw with a shallow head, if using a ordinary allen screw you
need to grind down the head.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 11, 2016, 09:06:36 PM
OK I will remember that thanks. It is an M8 right or is it M10? I can't seem to find the part number or see it on the fiche but do see it in Clymer, though it just says allen screw without specifying the size.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on October 11, 2016, 09:08:56 PM
M8
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 11, 2016, 09:17:47 PM
Ty
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on October 11, 2016, 09:30:10 PM
Sorry, did first have the older type fork in mind.....on your fork it was a change in 08/91.

On early version seems to be M10, late version M8....both is special bolt, which you gonna need
the OEM part.....especially if you have the early version which have a integrated valve.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 11, 2016, 09:43:14 PM
The fiche on MaxBMW for my bike does show the integrated valve -

 31 42 2 310 804

but to be honest it isn't very clear

just my luck it is a $65 part and the later on is $8...

I guess I will take it out and see

The set switches from one size extractor to another at M9 so I might play is safe and use the one for M8 just in case..
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on October 11, 2016, 09:52:52 PM
Best wishes for the job.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 16, 2016, 09:58:00 PM
Soooo...

A largely but not totally successful weekend to report.

I had discovered a total of six wrung out allens on the bike when I started to work on it.  This weekend I managed to get five of them undone using the extractor kit.  The one that got away... yep the bottom of the fork leg.   I cannot get it undone.  I have drilled a decent hole and the extractor bites great using the tap wrench I have but it just will not turn.  I have so far avoided getting all butch and putting some kind of extension bar on the tap wrench because I don't want to break the tool off in the fork.  For now I think I will take both forks to a specialist BMW shop near me and let them have a try...

I DID manage to get the second fork off the bike (there was a threaded nut in the lower triple tree). I also got the rear brake off and gave it an overhaul - there is a hole in the pipe from the master cylinder hence zero back brake.  I also took the discs off the front wheel so I can swap them round and mount the wheel the right way. I took off the rear wheel so I can prepare it and the front for powder coating.

Lastly I tackled the fuel tank, to get it ready for a respray.

I drained it and was going to dismantle it when I saw how the filler looks.

I guess I am going to have more work with the extractor but they are such small screws i wondered if I should do anything different?

The inside of the tank doesn't look too bad but isn't great and the electrics have been hacked about (of course).  The sender unit for fuel level is a total wreck but we run ethanol free gas here so the rubber etc seems ok.  I can almost guarantee the hoses inside the tank are the wrong ones but wanted to get some input before messing the filler cap up to get everything out and check.

Title: Re: K100RS parked for four months outside in all weathers
Post by: kennybobby on October 16, 2016, 10:56:20 PM
i suppose you applied heat to the bolt to melt the thread locking compound, and use an adjustable torque wrench so you can control how much you using--it may take at least whatever the tightening torque value is to get it loose.

A small carbide drill bit should open up the gas cap screws--hopefully you can get in there to get it squared away.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 16, 2016, 11:02:20 PM
Yeah I did use heat on the Allen in fork. To be honest if I just got braver with some sort of lever on the tap wrench it might break free. The issue is that since it is JUST a tap wrench that the extractor connects to I don't know how much force it or the extractor can take  and survive. (http://uploads.tapatalk-cdn.com/20161017/80934d23feafa9f12102157a83e70c33.jpg)

Sent from my SM-G935F using Tapatalk

Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on October 16, 2016, 11:20:15 PM
Try heating with a hot air gun on the fork leg, also try a 50-50 mix of acetone and ATF fluid. As far as the filler screws I would try removing with a screw removal bit, they come in a set and are different than Eziouts. If this doesn't work drilling the heads off the screws carefully with a counter sink drill bit could be an option. You need to keep it centred and square ( helper is handy to make sure you are drilling square) and only go deep enough to just remove the head. Hopefully with the heads and filler removed and with a bit of heat and penetrating fluid they will come out. If they don't you will have to drill them out, if you have drilled the head off and it is centred and square you could use this as a guide to centre and drill out the screws. It is a tricky and daunting task go slowly and carefully. If you are not confident try out the techniques on a bit of scrap material drill, tap and countersink, fit some screws and try drilling them out with the extractor, try countersinking and drilling and retaping. It is better to stuff up a bit of scrap than stuff up the tank.
Regards Martin
Title: Re: K100RS parked for four months outside in all weathers
Post by: rbm on October 17, 2016, 05:44:22 AM
...  My fuel gauge doesn't work but at $200 the gauge in the tank can wait.
The sender must just need some refurbishment to bring it back from the dead.  Check my article (http://www.k100-forum.com/t9265-messing-with-the-in-tank-fuel-sender) on K100-forum for the process.
Title: Re: K100RS parked for four months outside in all weathers
Post by: kennybobby on October 17, 2016, 09:40:40 AM
Get a square, or triple-square, socket of the correct size and then you can use a torque wrench (e.g. 4,8 or 12 pt socket)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on October 17, 2016, 02:11:38 PM
Make sure you have thoroughly flushed the tank before applying heat. Also be careful if you use the the Acetone ATF mix it is highly flammable and will remove paint. Before attempting to use the screw extractor you could try alternating between heat and cold (freeze spray) then apply the Acetone ATF mix and let it soak for a few hours or days.You might want to replace your existing screws with stainless steel allen screws and a bit of Koppercote once they are out.
Good luck Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 23, 2016, 09:47:01 AM
So the good news is - the allen is OUT!

The bad news is it is a mess in there.

The seals seem to be very well stuck in there and before I just hack at them with a screwdriver or something I wanted to ask if there is a specific method used to get them out?

They also seem different from the replacements I brought from MaxBMW.  It seems the ones in there are part number 31 42 2 312 928 which MaxBMW says were superseded by 31422310345 which are the ones I got as replacements.  That makes it hard for me to work out exactly what is going on under all that old grime and grit etc.

So can anyone tell me the best way to get the old ones out?
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on October 23, 2016, 07:37:13 PM
So the good news is - the allen is OUT!

The bad news is it is a mess in there.

The seals seem to be very well stuck in there and before I just hack at them with a screwdriver or

So can anyone tell me the best way to get the old ones out?

Should be easy enough with a screwdriver working round.I seem to remember puting two blue seals in mine and original BMW gaiters many miles ago.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 23, 2016, 07:47:30 PM
So can anyone tell me the best way to get the old ones out?
When the springs and seal circlip have been removed, on my K75 I use the absorber tube as a slide hammer and bang the seal out of there.  Check Delboy (https://www.youtube.com/watch?v=vrmYJgcGX30#t=395) at 10:00. I can't say whether that's the best way on a K100RS but it works on a K75.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 23, 2016, 08:18:27 PM
Well that is exactly what has me confused.  I cannot for the life of me see any kind of circ clip or retaining ring holding it in...

Yet it is very well stuck in there



Title: Re: K100RS parked for four months outside in all weathers
Post by: kennybobby on October 23, 2016, 08:33:44 PM
That dark brown wet rusty bit above the seal is the internal snapring--i can see the extraction hole in the ring at the 3 oclock position in your 3rd photo (073606) in the prior post.

google snapring and snapring pliers to see pictures.

A pick can be used in the hole to pry the ring out and a small screwdriver to work the edge around to get it oot if you don't have the right pliers.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 23, 2016, 08:52:40 PM
Yep just after posting  the last post I saw it myself and with a pick and some grunting me and my son got it out . Thanks for the help.  I am beginning to realize that the easiest task on this bike is a challenge. I have never seen seals such a mess. Still progress is progressing- we have had a great day

Sent from my SM-G935F using Tapatalk

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 27, 2016, 08:09:02 AM
I am nearly ready to send some parts for paint and powder coating.  I have the front wheel off and the disc brakes removed etc. All I need to do now is take the bearings off and Clymer's mentions needing a special BMW tool to do this.  Is that the only way or can it be done without buying the special tool?  I know there are posts on how to do it if you are replacing the bearings but unless they are terrible I was hoping to reuse them, I just wanted to take them off before the powder coating process.
Title: Re: K100RS parked for four months outside in all weathers
Post by: kennybobby on October 27, 2016, 09:27:42 AM
It's difficult to remove them without smacking the inner raceway, and that will damage (brinnel) the bearing.  You don't want powder coat in the bore of the outer race anyway, so it would need to be taped off well--it won't matter if the bearing is in or out when taping, actually may be easier to do a good tape job with bearing in place.  Cut a piece of cardboard to fit in the outer bore and trim the tape at the edge--no paint will get into the bearing.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 27, 2016, 09:58:38 AM
Great, I was hoping that might be the case. Makes life much easier. Thanks
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on October 27, 2016, 04:22:18 PM
To be sure,take the old bearings out for powder coating ,a heat process,but must mask off the bearing housings.Or leave them in as masking but the bearing seals will be ruined so you'd have to scrape off any powder coating to get them out.New bearings on my old girl are cheap and standard.Brute force with hammer and drifts worked for me.New bearings= peace of mind.
If it's paint then no heat involved but is an inferior coating.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 27, 2016, 06:00:35 PM
So the bearings are a standard type? That makes it a lot cheaper if I don't have to buy OEM from BMW in the US.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 30, 2016, 05:15:46 PM
Today my son and I installed a new (to me ) loom and wow does it look better.

We also examined the bits from inside the tank because one of the few remaining issues from the PO and the loom is the fuel pump connection.

So it seems to me the fuel level sender is toast, also that the fuel filter is not oem which makes me think the pump isn't either.  I don't know whether to cut into the new loom - wich I am obviously loathe to do -  or try and fix it so it uses the original connectors etc.

How much should I worry about this?

I am looking for a used fuel level sender but they seem to be as rare as rocking horse doodoo...



Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on October 30, 2016, 05:51:00 PM
H
So the bearings are a standard type? That makes it a lot cheaper if I don't have to buy OEM from BMW in the US.
In '86 they certainly were.I presume yours are also similar but I have heard of more recent designs having bullshit added complicated weird tapered roller different either side bearings,which caught me out when trying to post authoratively about it....I could still be wrong.Replacing mine was easy.They fail slowly in my experience whining and getting hot untill the last bit and then they sieze or the cage colapses and shag out the housing.You'd deserve what you get if you didn't notice all that in time.
Proceed with confidence!..but use a reputable bearing supplier.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 01, 2016, 06:59:14 AM
I am going to try and clean out the inside of the tank.  After a few internet searches I am going to go with vinegar and see how that works.  Here are a few before shots, it is pretty bad but not as bad as some I have seen on here so I will count that as a win! No idea what fuel pump it is but it seems to work fine and the MacGyver to hold it in the vibration damper looks solid enough
Title: Re: K100RS parked for four months outside in all weathers
Post by: kennybobby on November 01, 2016, 07:56:48 AM
It doesn't look too bad at all.

i use pine-sol cleaner to soak motorsickle carburetors--it loosens and cleans all the grime and residue, plus it smells good.  Vinegar might work too although i've never tried it.

It looks like you have a hole developing in that problem area below the fuel pump--and it looks like it's been welded or repaired before.  That left side lower seam area is prone to develop leaks over time.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 01, 2016, 08:05:57 AM
Good eye - yes it has been repaired there in the past, I am about to send the tank off to be stripped and painted so let's see what horrors that will reveal. 

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 06, 2016, 12:37:17 PM
Been a day of cleaning and prep so far.  Part of that has been working out where and how to mount the K1100RS fairing I am going to install on my K100 RS.

Can any 1100RS owner please confirm for me that this tapped hole on the rhs of the engine is for a fairing mount?

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 06, 2016, 12:40:22 PM
BTW the vinegar in the tank seems to have worked a treat...
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on November 06, 2016, 07:35:25 PM
Wow, that vinegar trick is one I need to put in the memory banks!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 07, 2016, 03:59:50 PM
Does anyone know the part number of the hose in the top of the air box? On MaxBMW the fiche just has the whole thing as one very expensive piece when all I need is the one hose.

The one on there is all cracked and the end has rotted away completely. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 07, 2016, 04:19:58 PM
Does anyone know the part number of the hose in the top of the air box? On MaxBMW the fiche just has the whole thing as one very expensive piece when all I need is the one hose.
Can you post the diagram and indicate the "one very expensive piece?" I see a hose for around 27USD in the MAX diagram.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 07, 2016, 05:30:42 PM
Here is the fiche from MaxBMW - I thought the hose I needed was no 9 - 13 31 1 461 972 - $23.15 but it isn't, I know I ordered one! The hose I need has a strange inbuilt seal in the middle where it goes through the body of the air box.  I have looked fairly carefully and can find nothing like it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on November 07, 2016, 05:41:32 PM
Have you removed the hose from the airbox?  Are you sure that you aren't looking at a grommet? 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 07, 2016, 05:42:38 PM
How does it differ from the parts shown in this post (http://www.motobrick.com/index.php/topic,3722.msg65772.html#msg65772)? It might be your existing part has been replaced by the one you ordered.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 07, 2016, 05:47:13 PM
Fairly sure - and it is a different material - much more rubber than the hose I ordered which is more like a braided fuel hose type
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 07, 2016, 05:48:41 PM
Laitch that is it! The crankcase hose - but I can't find a part number for it...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 07, 2016, 05:51:04 PM
Laitch that is it! The crankcase hose - but I can't find a part number for it...
What is it? Let's see an arrow.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 07, 2016, 05:53:47 PM
This is what I am looking for
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on November 07, 2016, 06:05:56 PM
There should be a number molded into it.  Can you see one?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 07, 2016, 06:11:26 PM
There should be a number molded into it.  Can you see one?
All right, everyone, the part is available. Go to the Engine Mounting Parts diagram. Look at number 10. After you say, "That's not it!" Click on the diagram then scroll down the menu to number 10. Enlarge the photo and you'll see that is the part. 46USD plus change plus shipping and it's yours. The diagram is generic.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 07, 2016, 06:14:35 PM
The only number printed on it is "4" I suspect that isn't good enough lol.

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 07, 2016, 06:16:39 PM
For gawdsake order the blasted part and let's move on!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 07, 2016, 06:17:26 PM
Hat's off to you Laith - that certainly looks like it - what a strange place to have it listed.

Thank you very much

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 07, 2016, 06:21:34 PM
Hat's off to you Laith - that certainly looks like it - what a strange place to have it listed.
My hat's off to you for working so ardently on Lazarus!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 13, 2016, 02:35:22 PM
I am planning to re install the ABS that the PO had removed.

In the process of doing that I find the modulator mount that came with my bike is super weak for the weight of the modulators.

I think I have the earliest version of ABS meaning only the first two battery plate mounts are used to secure the ABS modulator mounting plate.

Looking at MaxBMW I see a plate with four mounting holes. not two like mine, DOes anyone know if that four hole plate will fit my bike?
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on November 13, 2016, 06:46:19 PM
The rear of the modulator mount is attached with four 6mm screws(two on each side) to the footpeg plates.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 13, 2016, 08:11:07 PM
That must be the other mount and sounds like a much better idea.  The mount I have ONLY attaches to the rear two battery mounting plates and given the weight of the two modulators it just doesn't strike me as a good long term solution.

I will see if I can get a used mount with four mounting plates.

Thanks for the help
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 19, 2016, 07:15:21 PM
Things are moving forward, the tank and a couple of other bits went off to be painted and the wheels to be powder coated yesterday.

On top of that I also managed to use my new tap and die set to make the thread for the K100RS fairing mount

I hope to have everything pretty much finished and on the road in three weeks, just as the dry season kicks in.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 21, 2016, 01:08:41 PM
Can someone help me work out where this hose is supposed to go?  Coming out of the engine block at the front is part 11 11 1 461 882   which is a vent pipe. It has two tubes attached to it.  The thicker one attaches to the top of the air box - the thinner one, which looks a little like a vacuum hose to me, has been cut and isn't attached to anything. I have been looking but can't see where I should attach it.  Anyone know?



Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 23, 2016, 11:43:16 AM
No guesses?

 I was thinking maybe it was a California model and this pipe went up to the tank vent or something?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on November 23, 2016, 12:22:15 PM
 :dunno Though would not connect to the tank.
Title: Re: K100RS parked for four months outside in all weathers
Post by: F14CRAZY on November 23, 2016, 05:29:15 PM
Maybe the bike had an aftermarket cruise control and this connected to it?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 23, 2016, 05:35:38 PM
Cruise control in Costa Rica? I doubt it - it comes as standard on my car and I have yet been able to use it for more than 2 miles at a a time!!

I did dry fit the fairing yesterday and it is looking pretty good...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on November 23, 2016, 06:53:29 PM
I was thinking maybe it was a California model and this pipe went up to the tank vent or something?

You're correct, it have been a check valve in between those two hose ends.
Usually this vent system is blinded and a  small plastic funnel is mounted between the
frame tubes under the spigots for tank vent and rain water drain.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 23, 2016, 07:06:18 PM
OK so I can safely remove the pipe and plug the vent and forget about it
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on November 23, 2016, 07:47:46 PM
Yes, you can blind the small hose at the engine end....the hose connected to the tank, you can leave it
as is, or remove it from the spigot under the tank.....but it must be open as it is the vent for the tank.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on November 24, 2016, 09:57:14 AM
That fairing looks really good!  Hope you have everything tied down for the big blow coming your way. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 25, 2016, 03:33:26 PM
Today I finally got round to flushing the cooling system.


I think I can safely assume it isn't a good thing when the radiator hoses make a crunchy sound when you squeeze them??


It also goes without saying there was just tap water in there... sigh


So I have flushed it though five or six times - by lucky accident the hose I was using fits quite snugly into the end of the fill pipe allowing me to build up a little pressure.  Tons of what looks like rust etc came out - I am wondering whether I should remove the pump and dismantle it or to just ride and see how it goes...

I did notice it seemed quite hard to fill the system if just pouring water in to the top once the drain nut was back in place - it kept making 'I am full' noises at me after only half a liter or so.  I had to keep on squeezing the pipes to get more to go in.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 25, 2016, 04:11:39 PM
I am wondering whether I should remove the pump and dismantle it or to just ride and see how it goes...

I did notice it seemed quite hard to fill the system if just pouring water in to the top once the drain nut was back in place - it kept making 'I am full' noises at me after only half a liter or so.  I had to keep on squeezing the pipes to get more to go in.
Use of a coolant flush product—if you haven't used one yet—might help rinse out whatever scum is hanging on in the coolant passages. If it were my bike I'd do a couple more flushes with a product like that. You run the engine using them. Then I'd ride it to see if the pump leaks, if it's at the riding stage. Otherwise, ¿Quién sabe? You can always rebuild the pump, which is what you'll need to do anyway, if you compromise any seals. That means new seals and a new impeller, among other things.


The radiator needs to be filled slowly; I use a funnel. The squeezing technique is normal procedure and expected.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 25, 2016, 04:40:38 PM
OK great, I am pretty keen to get to the riding stage. It is nearly there - the tank and other bits are in paint and the wheels in powder coat. I hope to get them back next week so maybe in two weeks I will be on the road...
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on November 25, 2016, 06:40:24 PM
It sounds like there is a lot of crap in your cooling system.  It would be a good idea to run a cooling system flush with distilled water.  Prestone makes a good one.  You may have to do it twice to get all the crap out.

Then, it might be a good idea to remove the radiator to run a lot of water through it.  Clean out all the bugs and dirt in the fins.  Where you are riding you are going to need all the cooling efficiency you can get.  I wouldn't take any shortcuts on this sytem.

I would suggest that the water pump can be serviced after the bike is back running.  No need to tear into it before you know if it has any problems.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 26, 2016, 04:55:33 PM
Today I started the process of doing a spline lube.  I can't go all the way to the clutch right now because I have no front wheel so can't easily get the bike off the center stand to remove the transmission.


Instead i though I would just remove the rear drive and have a look at the splines there - expecting to find them dry as a bone and worn as heck.


In fact I had a fairly pleasant surprise


The splines did have lube on them - though i suspect it was just regular grease and when cleaned up they looked in pretty good shape.


The only thing I am not sure about is in the top shot you can see a band around the middle of the shaft, like a cut, doesn't look too bad but I am not sure if I should be worried about it.


The final drive oil was pretty bad and very smelly so i will be changing that for sure.


Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on November 26, 2016, 05:02:34 PM

Wouldn't worry splines look great just lube them up with one of the recommended high moly greases.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on November 26, 2016, 05:28:37 PM
Just in case. :giggles
https://www.youtube.com/watch?v=9K1Sm2xfAyw
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on November 26, 2016, 06:00:51 PM
Thanks :2thumbup:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 10:59:23 AM
I was planning to check and probably change the transmission oil today.  Then I saw that the filler screw plug is wrung out (like it seems almost every other bolt head on the bike!)


I am getting pretty experienced at removing these bolts but this one has me worried.


The screw plug is pretty shallow and goes directly into the transmission so I don't think drilling it an using an extractor is a very good idea.


I was thinking maybe I would have to buy a sacrificial 8mm allen and weld it into the hole?


Anyone got any other ideas?



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 08, 2016, 11:16:20 AM
Anyone got any other ideas?
Remove the drain plug to relieve pressure from heat. Using a heat gun, heat the filler plug and area around it. Pound a slightly oversized socketed torx or hex bit into the plug. Heat the area around the plug again. Apply penetrant. It'll probably smoke. That will reduce the insect population and impart a cloyingly sweet aroma to your coveralls. Return in 15 minutes and give a hard reef on the socket with an extension handle on the wrench or breaker bar. Instead of the socket bit technique, you can pound a notch into the hex opening with a cold chisel and hammer it out counterclockwise using the chisel. Or you can carefully weld something to it, as you suggested.


Enough heat, penetrant and patience, it is going to unscrew.
Title: Re: K100RS parked for four months outside in all weathers
Post by: kennybobby on December 08, 2016, 11:28:37 AM
Put a drop of oil in there to loosen the crud, then use a scribe or pick to break it up and vacuum it oot to see how deep the hex flats really are--it may be deep enough that an allen wrench will extend past the damaged flats and come right out...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 11:35:05 AM
I tried that no luck but then I got lucky - I tried a T 50 torx bit and that gave me enough leverage to crack it and get it out  :clap:


Needless to say the transmission was dry as a bone.  I don't have the special dipstick but Clymers shows it and the lengths in mm of the handle and oil measuring levels.  So I used those and it took 400 ml before even registering.


I am going to order a new screw plug and washer and will see if I can also find the correct dipstick - the washer wasn't even there on mine which is no doubt why the PO gorilla'd the nut hoping to stop leaks.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 11:59:16 AM
OK now I know why the transmissions was dry - big old leak from the clutch boot.. more parts to order :musicboohoo:   - do I just need the clamp and the boot itself or there are other bits I should swap out while I am in there?



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 08, 2016, 12:10:36 PM
there are other bits I should swap out while I am in there?
El resorte.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 12:21:50 PM
The spring - ok thanks - o sea gracias
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on December 08, 2016, 12:47:07 PM
I tried that no luck but then I got lucky - I tried a T 50 torx bit and that gave me enough leverage to crack it and get it out  :clap:


Needless to say the transmission was dry

Nice job!

Reminds me that I need to check my trans fluid...thanx!


Sent from my iPhone using Tapatalk
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 12:51:07 PM
LOL I checked mine because of this thread - http://http://www.motobrick.com/index.php/topic,9134.msg74466.html#msg74466 (http://http://www.motobrick.com/index.php/topic,9134.msg74466.html#msg74466) - see this forum helps us keep up our maintenance!
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 08, 2016, 01:13:52 PM
Looks like you're making some nice progress against some pretty annoying obstacles.   :clap:

No need to spend time aand money trying to source a transmission dipstick. 
Get a piece of coat hanger wire about 8" long. 

Bend a 1 1/2" loop in one end. 

Measure down the specified length for the oil level from the bottom of the loop. 

Cut the wire of about 1" below the oil level measurement. 

With a hammer flatten the wire for the bottom 1 1/4".  The flat will make it easier to see the oil level on the stick.

On the flattened part of the wire mark the oil level by tapping with a chisel or scratching it in with a file or fine hacksaw blade. 

You now have a lightweight dipstick that will take up nearly no space in your tool kit.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 01:32:34 PM
Thanks I will make one for sure and post the results...


Progress has been painfully slow recently - largely due to the fact that every time I start somethign it reveals more parts needed which is 2 to 3 week process to get them down here.


Having said that I am supposed to get the parts back from powder coating tomorrow which is very exciting.  That means I can finally reassemble the forks, front brakes and get the front wheel back on.


After that it is just waiting for the tank etc from paint (now) the clutch boot, a quick spline lube, rebuild everything and off we go...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 03:00:21 PM
In preparation for the clutch boot job and to see better what is going on I took off the exhaust - surprise surprise it isn't exactly mint...


I am pretty sure I can get the header welded but wanted to ask about the much blacker colour on the same pipe.  Is that possibly an indication of that cylinder burning oil? Should I be worried or put it down to the fact the pipe was cracked?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 08, 2016, 03:09:40 PM

It looks like it has been repaired before, Gryph I believe had problems with cracking header pipes, I believe he changed to a different model. Apparently earlier model didn't crack. The black could also be one cylinder running rich.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 08, 2016, 04:07:43 PM
The headers on these bikes(K100RS 4V) have a cracking problem.  According to BMW dealer records, my bike had the exhaust replaced under warranty 3 times before the owner gave up and installed a Remus system in 1996 or 7.   That exhaust lasted until 2015 when I swapped it for an earlier model K100 exhaust because I didn't like how annoying it was when riding in town.

The early model exhaust fits with a bit of fussing to get the stands to retract properly, and sounds the way I like my bikes to sound(not loud).  The only thing different is that because of the different foot peg mounting plates the pipe sticks out a bit further than the original exhaust.  No big deal unless you're a peg dragger in which case the end of the pipe will drag a bit before the pegs.  On the other hand, it does make getting the rear wheel out a bunch easier.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 05:11:01 PM
Perhaps not the finest welding in the world, though still far better than I could do.


For the grand sum of $5.50 I have to say I am happy...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 08, 2016, 05:24:25 PM

Gryph do they crack roughly in the same place, and if so do you think a  2'' gusset between two pipes would be beneficial.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 05:27:40 PM
It certainly looks like mine cracked very close to where it was repaired last time.  I had the same thought, some kind of sleeving on each one to reinforce them close to the branching of all four would probably solve the problem.-
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 08, 2016, 05:29:36 PM

http://www.k100-forum.com/t10630-k-series-exhaust-headers-cracking-a-possible-prevention#125768
 Have a look might help regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 08, 2016, 05:49:05 PM
I can't say where the headers on my bike cracked since they were replaced by a previous owner.  I have heard of several others with 4V K100RS models that had exhaust cracks so it seems like a common problem.

When I replaced the Remus i was reluctant to use the original model exhaust based on the earlier problems.  Since a lot of parts are interchangeable between years and models, I decided I would take a chance on an early model exhaust.  Was very pleased to find that it worked.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 08, 2016, 05:54:11 PM
http://www.k100-forum.com/t10630-k-series-exhaust-headers-cracking-a-possible-prevention#125768 (http://www.k100-forum.com/t10630-k-series-exhaust-headers-cracking-a-possible-prevention#125768)
 Have a look might help regards Martin.
That's a great find, Martin, and bound to help those looking for a solution or attempt at prevention.  :2thumbup:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 08, 2016, 06:08:13 PM
That is a great idea, I am going to try it for sure.  Thanks Martin
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 09, 2016, 06:54:25 PM
After three months - or maybe more - a pair of ABS modulators I got from someone on this site finally arrived today.


They look in great condition except... when removing them from the bike he couldn't be bothered to disconnect the plugs so he CUT the wires.


At first glance there is no way to get into the modulator and try and switch out the wires. Has anyone ever tried to open one up?


I am pretty upset - he kindly gave them to me for free but it has cost me the best part of $200 in tax and shipping to get them here.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 09, 2016, 07:37:49 PM

Probably wouldn't be pretty, but you could carefully cut off the rubber boot on your new modulator exposing the wires. Try to cut off close to the modulator and slide it off over what remains of the wires. Do not damage the wires while you are doing this. Carefully strip back the wires enough to solder them try to stagger the joins also keep the joins short. You are staggering the joint so as to keep it as slim as possible.Then cut off the harness from your old modulator, again try and remove the boot you might need it if you stuff up the other one. Then stagger the wires to match the new ones, make sure you match the colour coding. Slide on some heat shrink to cover the individual wires and the boot, also put a large piece of heat shrink over in case you can't get the boot to fit over. Keep the solder joins as fine as you can you need to keep the join as slim as possible.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 09, 2016, 08:16:06 PM
I think, on semi-mature reflection, I will install everything with the old modulators and the new brain before I start cutting wires. I suspect that one of the parts least likely to fail is the modulators, that when things on the ABS system fail it is more likely to be the brain ad or sensors before the modulators (this may well be pure wishful thinking on my part).


So install, test, gingerly, and revisit if necessary is my plan for now.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on December 09, 2016, 09:17:58 PM
If using heat shrink tubing I would use the type with the sealant in side to make it more waterproof


Sent from my iPhone using Tapatalk
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 09, 2016, 09:23:00 PM


I don't know whether you have ABS 1 or ABS 2,   http://www.motobrick.com/index.php/topic,538.0.html (http://www.motobrick.com/index.php/topic,538.0.html)
http://www.motobrick.com/index.php?action=dlattach;topic=1631.0;attach=850;ts=1367445150 (http://www.motobrick.com/index.php?action=dlattach;topic=1631.0;attach=850;ts=1367445150)
http://www.motobrick.com/index.php?action=dlattach;topic=1631.0;attach=851;ts=1367445151 (http://www.motobrick.com/index.php?action=dlattach;topic=1631.0;attach=851;ts=1367445151)
http://bmwk10075abs1fix.web.fc2.com/
Might be worth a read.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on December 09, 2016, 11:11:45 PM

I think, on semi-mature reflection, I will install everything with the old modulators and the new brain before I start cutting wires. I suspect that one of the parts least likely to fail is the modulators, that when things on the ABS system fail it is more likely to be the brain ad or sensors before the modulators (this may well be pure wishful thinking on my part).


So install, test, gingerly, and revisit if necessary is my plan for now.
Good plan to hope it's just the brain first of all.
I use a short length cut from copper plumbing tube with heat shrink on top to make good electrical cable connections I crimp the tube with vice grips.
Yes,I know it's a Bodger's way of doing it but Bodging used to be a legitament trade when I was growing up,er when I was a lad.. :musicboohoo: you would use a Bodger who could fix anything with whatever was lying around!A great loss to our instant gratificated throw away society IMHO. :dunno
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 10, 2016, 06:16:35 AM
When it comes to my soldering skills I aspire to bodger - I dream of the day I am competent enough to consider myself a bodger - I am currently working my way up the levels and am somewhere between noob and hack at the moment....  :dunno2:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 10, 2016, 07:46:16 PM
Today I begin re-installing the ABS on the bike.  I have been looking on the internet and in this forum but I am a little hazy on one thing.  As far as I can tell on the modulators, ABS I, the top hole is for the line coming from the brake lever, either hand or foot, and the bottom one is for the line going to the caliper.  Can anyone confirm that?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 10, 2016, 08:56:11 PM
Can anyone confirm that?
Have you looked at the diagram that's found if you scroll down here (http://www.kbikeparts.com/classickbikes.com/ckb.tech/0.ckb.tech.files/abs/abs.htm)?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 10, 2016, 09:01:39 PM
Yes. I did, in fact that is the ONLY place I found a clue as to which goes where, I was just looking for confirmation from elsewhere.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 10, 2016, 09:02:49 PM
Yes. I did, in fact that is the ONLY place I found a clue as to which goes where, I was just looking for confirmation from elsewhere.
Go with it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 11, 2016, 10:44:24 AM
Looking at the modulators on my K75S, the top fitting near the bleeder is the inlet from the master cylinder, and the lower connection goes to the caliper.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 13, 2016, 03:44:28 PM
Thanks MG



Now,  have a question about the three hard lines., Two long and one short.  As far as I can tell so far one of the two long lines one is shorter than the other and has a wider thread at one end.  I think this is the line that goes from the modulator to the caliper. The other long line is therefore for the line to the brake lever.  The third short, curved one seems to be an extension for the line to the caliper.  I am having a little trouble working out the exact routing of the that pipe so I can connect it right. I have searched but can't find any photos on line.  Can anyone tell me how I should route the lines?  Thanks


Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 13, 2016, 04:23:34 PM
Does this help? 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 13, 2016, 04:29:47 PM
hmm kind of - though it seems to reverse the previous decision that the top line was for the line to the brake lever and the bottom line to the caliper...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 13, 2016, 10:08:15 PM
Does this help?
It is a cause of confusion because it varies from the BMW ABS I Users Manual regarding the positions of the lever lines and the caliper lines. What is its original source, Gryph?

If this were my bike, I'd follow the manual and fit the parts accordingly. Somebody here must be able to make a photo layout of the assembly to help move you forward, Filmcamera, if the manual isn't enough for you.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 13, 2016, 10:36:41 PM
It's the parts fiche for the bike he's working on.  It should show the basic relationship, as far as what connects to what, of the various lines he said he was having a problem identifying.  The lines he is working with are off my RS which is the same model as his. 

The two long ones run to the modulator.  The one with the hose and the hard line goes from the master cylinder to one of the long lines.  The hose connects to the master cylinder, and the hard line connects to the long line that has the matching fitting.  The long line that connected to the hard line from the master cylinder goes to the inlet of the modulator.  The other line connects to the modulator outlet and is connected by a hose(not provided) to the fitting on the fork brace between the fork tubes.

As near as I can remember the two long lines run from somewhere above the right hand side of the radiator, back above the air box to the modulator.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 14, 2016, 07:42:56 AM
It's the parts fiche for the bike he's working on.

The two long ones run to the modulator.  The one with the hose and the hard line goes from the master cylinder to one of the long lines.  The hose connects to the master cylinder, and the hard line connects to the long line that has the matching fitting.  The long line that connected to the hard line from the master cylinder goes to the inlet of the modulator.  The other line connects to the modulator outlet and is connected by a hose(not provided) to the fitting on the fork brace between the fork tubes.
In the fiche diagram you supplied and your description from memory, that would make their positions reversed from the manual's schematic drawing as I understand it.

I'm slightly disturbed that although my safety is compromised by not having this ABS system on my bike, I'm happy about that—classic approach-avoidance.
 :yippee:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 14, 2016, 08:34:47 AM
On my K75's the rear brake modulator is connected as follows:

Upper fitting goes to the master cylinder and the lower goes to the caliper.   

The connections for the front modulator are configured differently from the rear modulator.   In that case I would follow the manual or the fiche illustration in lieu of better documentation.  I suppose it was a screw up to assume that the internal passages of the two modulators were the same even though the line connections were in different locations. 

I guess that Filmcamera will have to sort this out on his own.  The more I post the more confusing this gets.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 14, 2016, 08:52:50 AM
Yes the rear is easy, even the Clymer's specifies which line in the intake and which the outlet but it doesn't for the front modulator.  It also seems they changed the early ABS system's all the time.. For example my modulator has clearly different sized holes for the intake and outlet (as does the shorter of the two long hard lines I got from Gryph) yet the other one I have (which had the wires cut) has the same size holes. All I really need to know is if the top hole is intake or outlet, the rest I can work out from there.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 16, 2016, 12:52:51 PM
Today I finally got round to doing a compression test.  I freely admit I have been putting it off because I wasn't sure I would want to see the results.  In the end however it wasn't too bad.  it was a cold test since the tank is still at the painters.  Cylinders 1, 2 and 4 all read 120 psi and number 3 was 130 psi.  For a bike with 123,000 miles on it I was pretty pleased, especially since I have no idea of that state of the valves, again trepidation winning out there, especially as it is a 4V and they generally seem to have less issues than the 2 V K's.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 16, 2016, 04:47:44 PM

Cylinder compression nice and even within 10 Psi, some compression gauges can read high or low. I would not worry until you have some miles it's belt. As stated numerous times Bricks do not like being idle and benefit from being used.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 19, 2016, 01:07:44 PM
I had another weekend of two steps forward one step back...


One Friday I did finally get the parts back from the powder coat - take two steps forward...


I got them home and discovered they had ignored everything I said and powdercoated the brake calipers completely.  That meant powder coat on the insides where the two halves are supposed to meet - that meant powder coat on the banjo bolts and bleed nipples they couldn't be bothered to remove, that means lost o-rings - oh and btw the way they 'misplaced'  all the brake pads and mounting hardware but are sure they will turn up.


Take four steps back.


Much sanding and cursing later the brakes calipers look ok, though I am super concerned about how much powder and crap has go into the system - I am going to be bleeding these three or four times at least before I try actually using them in anger.


Take one small tentative step forward.


I was able to FINALLY replace the fork seals and rebuild the forks.


Take a big satisfied step forward.


I then set to work with my tap and die set and have managed to clean up all the threads that got powder coated so I have been able to totally rebuild the front end and the rear brake and install the foot pegs mounts and rear wheel.


Two steps forward.


Of course the front wheel bearings got powder coated and I cannot get them out...


One step back.


Phew after what feels like a square dance I guess some progress has been made


In theory I get the tank and the rest of the painted parts this week.


I had one question about the rear wheel.  I know they came with four and five bolts.  I have five - on ebay I had got hold of a hub cap but it turns out it is meant for a four bolt wheel - it doesn't fit with my five bolt set up. How big a deal is it if I leave the fifth middle bolt out so I can use the hub cap?










Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on December 19, 2016, 01:32:19 PM
"How big a deal"?
I'm a bit confused about the fith bolt being in the middle...(Disclaimer)

I believe I'm far enough away to avoid litigation.4 bolts is ample for all the stresses involved....actually one would be enough not if it's the one in the middle though but don't quote me. :yow
(Disclaimer)Best sort it out properly.The inspector may take the cap off?
  The powder coated in wheel bearings,just scratch out the offending film on the wheel housing,carefully, and bash them out with a drift (solid bar)?and well aimed brute force.
Square dancing is par for the course.You will do better next time...won't you?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 19, 2016, 01:48:02 PM
I know they came with four and five bolts.
The five bolt configuration is news to me too. What's your source for that info?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 19, 2016, 02:01:45 PM
Well apart from the fact there are five holes and my bike came with five bolts, the Clymer shows five bolts for the three spoke wheel - in chapter 14 - supplemental info on 1990 and later models - the only part of clymer that seems to be right for my bike most of the time.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 19, 2016, 02:09:59 PM

Well apart from the fact there are five holes and my bike came with five bolts, the Clymer shows five bolts for the three spoke wheel - in chapter 14 - supplemental info on 1990 and later models - the only part of clymer that seems to be right for my bike most of the time.
Well, the fact that your front wheel came with its spoke orientation reversed doesn't make your bike's appearance a particularly sound reference for how things should be, does it? If the wheel calls for five bolts, it ought to have five bolts holding it; otherwise, you're heading down the maintenance path of the previous owner.


I questioned you because there's no reference in MAXBMW's fiche from a 5-bolt patterned wheel. Onward!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 19, 2016, 02:13:57 PM
I agree 100% that what ever is on my bike is not a great guide but it is in the Clymer ad the reason I though of asking was that in one of Chris Harris' videos he mentions them in passing with a disparaging remark.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 19, 2016, 04:07:34 PM

Is the five bolt pattern counting the one in the centre as shown in your picture. I have a 92 K75S with 3 spoke wheels and it does not have the centre bolt. Does this centre bolt actually retain the wheel?   :dunno  I have looked at a Haynes manual and a few parts sites and can not see any reference to it I will continue to look it is a bit of a mystery.
Regards Martin

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 19, 2016, 04:10:03 PM
Brute force did eventually win against the powder coated bearings but it needed a little bit of grey matter to do it.  There is very little lip inside to hit on and I was going nowhere fast, until inspiration struck.  The problem was I couldn't get any purchase and using a bigger drift (old screwdriver) made it worse not better.  What did the trick in the end was using my longest wrench extension with an old 16 mm socket on it.  That allowed me to maximise the purchase on the bearing by following the curve of the available lip with the curve of the socket.  A few sharp smacks and it was out!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 19, 2016, 04:17:25 PM
Martin yes it is in the center and it does seem to play a small part in retaining the wheel.


Here are excerpts from my Clymer page 616





Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 19, 2016, 05:44:53 PM

Must pertain only to a couple of models. I would not do away with it, must be there for a reason for fitting it. As for the hub cap you should be able to find one that fits with a bit of hunting. The one from a K75 will not fit due to the centre bolt, one of the inmates might have one.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 19, 2016, 07:14:19 PM
36132311276Hubcap, silverFrom:10/01/1989To:08/01/2014 (ENDED)Weight:0.066 kgPrice:$15.21
                  Part 36132311276 was found on the following vehicles:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 19, 2016, 07:18:58 PM
Thanks. I will see if I can track one down, looks like it isn't available from a dealer.  Alternatively I might try and mod the one I have to make it fit
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 19, 2016, 07:26:18 PM
Thanks. I will see if I can track one down, looks like it isn't available from a dealer.  Alternatively I might try and mod the one I have to make it fit
Then there's this (http://www.motobrick.com/index.php/topic,6108.msg40284.html#msg40284).
Title: Re: K100RS parked for four months outside in all weathers
Post by: mystic red on December 21, 2016, 12:17:44 PM
I didn't know there were 4 bolt wheels. Must be a K75 thing. Yes, use all 5. The fifth is not an accessory...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 21, 2016, 12:19:55 PM
I didn't know there were 4 bolt wheels. Must be a K75 thing....
Five bolts are a paralever thing.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 21, 2016, 05:42:15 PM
I finally found out where the brake lines go correctly for the ABS 1 on my bike . a big thanks to John (SugarHillCTD) over on the k1100 forum for taking the time to take photos and send me the explanation.

The bottom hole on the modulator is for the calipers as Drake had it in his diagram.  The top one is for the brake lever.

So the fiche is wrong
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on December 22, 2016, 10:53:51 AM
So the fiche is wrong

Say it isn't so!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 22, 2016, 11:50:39 AM
So the fiche is wrong
Say it isn't so!
Regardless, the schematic from the BMW ABS1 Users Manual available in the Technical Library here has been accurate.
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on December 22, 2016, 11:53:08 AM
Regardless, the schematic from the BMW ABS1 Users Manual available in the Technical Library here has been accurate.
The tech library here on motobrick has been invaluable. It's helped me so much already and I haven't even done much yet.


Sent from my iPhone using Tapatalk
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 22, 2016, 12:10:22 PM
The ABS manual is accurate but limited in the info.  It does show which line goes into which hole but no specifics on the lines themselves. I am very glad I managed to get confirmation from an owner with the same bike as me.  If it had been anything other than the brakes I would have been less concerned.  I am getting my new brake lines tomorrow so I will install everything and bleed the system over the weekend, when not cooking or stuffing my face with Turkey anyway!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 23, 2016, 07:12:35 PM
Got my Spiegler brake lines today and unless I am crazy they screwed up the order.  I have a 1991 K100RS 16V ABS 1.  They sent me six lines three with banjo connections at both ends, two with a banjo at one end and a female screw at the other and one banjo make screw.


I am pretty sure I needed four banjo to banjo - one for each caliper to the Y joint and one from the rear caliper to the ABS modulator and another from the the ABS modulator to the rear brake master cylinder. 


Other than that a good day - I got the tank back painted and it looks great - also the tragkorbs and the mirrors and lastly a bunch of bits from MaxBMW.


Basically one good push over the next three or four days and I should be on the road!


All in all a good day - especially since it is my birthday! 52 today.


Happy Holidays to you all.


Ride safe!

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 23, 2016, 08:55:28 PM
. . . it is my birthday! 52 today.
:birthday:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 23, 2016, 09:36:13 PM
Happy birfday and Merry Christmas!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 23, 2016, 11:01:57 PM

Happy Birthday Merry Christmas yours is even closer to Christmas than mine 21st. I used to hate it as a kid, the old combo present trick. :musicboohoo:
Ho Ho Ho.
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on December 24, 2016, 01:03:57 PM
Happy birthday and merry Christmas! I have the same bike as you do (but mines a '92) and if I don't get my Spieglers for Christmas from the wife I'll be ordering them myself so please let us know what you find out.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 27, 2016, 03:01:17 PM
I started putting things back together today and it actually starts!



Hmm I tried to post a video but it didn't seem to work


Let's try again


https://www.youtube.com/watch?v=pEa_74KRWOE (https://www.youtube.com/watch?v=pEa_74KRWOE)


I also wrote more in the post.


New fuel gauge works, temperature gauge works, fan comes on when it is supposed to.


It seems to be running a little rough and I need to balance the TB's etc but I would appreciate any feedback on how it sounds etc.  I am pretty new to K's so my ear isn't attuned to the good and bad sounds they make...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on December 27, 2016, 03:14:32 PM

 :2thumbup:  Nearly there this is where it starts to get exciting.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on December 27, 2016, 04:39:39 PM
It sounds very similar to mine...but I'm not sure if that's good or bad. lol


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 27, 2016, 04:51:01 PM
I would appreciate any feedback on how it sounds etc.  I am pretty new to K's so my ear isn't attuned to the good and bad sounds they make...
It sounds butch.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 27, 2016, 06:46:28 PM
Thanks Laitch, I'll take that as a compliment.


MaruadeRS quick update on the Spiegler lines.  Firstly they are a bit of a pain to install, not too bad but even so.  My main complaint with them so far though is that the lines are so short and so stiff I have not been able to take a front caliper off with the lines attached. That means the only way is to unscrew the banjo either at the top where it hits the three way joint or on the caliper itself before removing the caliper from the wheel.  That, inevitably leads to quite a lot of spilled brake fluid.  My other observation is about the banjo bolts that come with the kit.  They are VERY soft aluminium and I threaded two of them due to powdercoat residue - I do not mean I threaded them at the top of the hole when starting the bolt I mean I had the banjo 3/4 of the way into the hole and going perfectly  - it then hit the powder coat residue and instantly threaded as I tightened it.  The kit may say use only their bolts but I would ignore that and use the BMW ones or at the very least proceed with extreme caution using the Spiegler banjos, I guess you can take them in and out four times maximum before they are junk.


In theory they are sending out the correct missing hose this week. Meanwhile I just installed one of the old ones for now.


So now to the big question that I have been avoiding.  On this forum there are a million threads and posts about valve clearances and shims on the 2v models. Mention 4v though and there is a collective sharp intake of breath and lots of sideways glances.  As far as I can gather it is ok to check the 4v engine's valve clearances but unless you are a wrenching God do not attempt to shim them.  Is that fair? Are the valve clearances as critical on a 16v?  Should I check them and them take them to BMW if they are wrong or just take it to BMW to check and fix if necessary?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 27, 2016, 09:23:10 PM
Your Brick has been neglected. You must check the valve clearances.  If they need adjusting and you've got the time, tools, clear written instructions and the nerve, adjust them to the correct values.

Mechanical procedure at the level most of us practice is nothing more than following instructions carefully using the appropriate tools and paying attention. That includes adjusting valves on 16v Bricks. It's more complicated than on 8v Bricks only because there are more steps and parts involved in the procedure. Regardless of whether a procedure is simple or complex, only one step can be done at a time—one step after the next until it is finished.  Once the valves are correctly adjusted on 16v Bricks, their reputation seems to be that they stay that way. If you've got the money to pay somebody else to do it, pay them and accept the outcome.

It is pointless to raise this deal to a mythical level. Getting a less complex bike would be a better strategy.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 27, 2016, 10:25:07 PM
The dearth of comments on this procedure is testament to how often it is needed.

OK, here is my experience from a sister brick to yours. 

My bike has over 114,000 miles and came to me with no service records, but judging from it's condition I'm guessing the valves were never done.  I say this because the word on the 4 valve engines is that the valves hold their clearance.  Thus, they wouldn't have needed adjustment during the early part of it's life, and I'm pretty darn sure they weren't addressed in the last 50-60,000 miles.

So, assuming they were never done, here is what I found.  Out of 8 exhaust valves, all were still in spec, however, several were at the tight end.  All the intake valves were in the middle.  I could have left them alone, but since I was pulling the head and replacing the valve guide seals I decided to get all the  exhaust valves as close to the wide end of the spec as possible.  I wound up changing 4 exhaust shims.  Had to buy 3. 

On the 4 valve engines it's a royal pain in the ass to do the shims, about on a par with changing the clutch o-ring.  You need to pull the cams, and the timing chain to change the shims on this engine.  On the bright side, at least I was able to get the job done without needing any special tools.  Figure at least a day(a long one) start to finish.  I was lucky(!?) in that I was able to do it as part of a head reassembly.  Still, it's not something I want to do again soon.

My advice is to check them, record the clearances and store them.  Unless a valve has totally gone out of spec I would leave everything alone.  A complete check should take less than an hour start to finish.   If you absolutely have to do them, get a firm quote on having the shims changed from a reputable mechanic.  That should convince you that it is a job you might want to learn how to do.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 28, 2016, 05:29:14 AM
Ok great thanks. I will check them at least.  Needless to say I don't have a valve feeler gauge, will any type do or should I be looking for a particular type/size/range?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 28, 2016, 07:19:15 AM
Ok great thanks. I will check them at least.  Needless to say I don't have a valve feeler gauge, will any type do or should I be looking for a particular type/size/range?
Don't you have a manual yet?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 28, 2016, 07:51:11 AM
Yes I do

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Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on December 28, 2016, 08:02:35 AM
Yes I do
Great! It should show the types and sizes of the feeler gauges and how to use them.
So does this video that is accessible in the Technical Library.
https://www.youtube.com/watch?v=bFkPnLVkxWQ
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 28, 2016, 09:08:52 AM
Very useful - he says clearly that checking them is a waste of time - so I won't bother. Actually I probably will just for the hell of it.  I guess it is another case of the 2v and the 4v being so different.  BTW I did check the manual, sorry I hadn't done so earlier, it says flat metric feelers.  I guess that is enough info - I just wanted to be sure width wasn't an issue for the 4v.


Lastly a quick brake update for MaraudeRS.


I am an idiot...


The hose on the rear master cylinder that I was replacing was attached via a banjo bolt so I was looking for another banjo to banjo in the kit.  On the way back from the gym today I had an epiphany - maybe the male screw in the hose I have left from Spiegler IS a built in Banjo.  So I got home and checked and indeed that is the case. So the kit is complete.  Doh!
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on December 28, 2016, 09:25:22 AM
I used a set of inch feeler gauges.  I have metric gauges too, but they didn't have the resolution the others did.  With the inch gauges i could fell a gap that was in the middle of the spec.  My metric gauges only let me know top or bottom of the spec.
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on December 28, 2016, 02:30:48 PM
Lastly a quick brake update for MaraudeRS.


I am an idiot...


The hose on the rear master cylinder that I was replacing was attached via a banjo bolt so I was looking for another banjo to banjo in the kit.  On the way back from the gym today I had an epiphany - maybe the male screw in the hose I have left from Spiegler IS a built in Banjo.  So I got home and checked and indeed that is the case. So the kit is complete.  Doh!

Thank you for the info! Santa didn't bring me a set of hoses so I'll have to get them. I'm planning on replacing the rusted handlebars with either a set of clubman bars or clip-ones so I don't want to buy any yet because they'll end up being too long.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on December 29, 2016, 01:33:41 PM

Yesterday I flushed the radiator and added a 60/40 mis of distilled water and coolant, I also balanced the TB's and bled and fixed the rear brake.

Today I put on all the tupperware for real for the first time.


I still have things to do (like find some vinyl paint so I can paint the backrest on the top box for example) and fix the front brakes but do feel I am getting very close now.


Here are a few pictures
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on December 29, 2016, 03:26:52 PM
Looks good!


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 04, 2017, 10:50:02 AM
Looks like fixing the clutch boot leak has just shifted the leak to another place out the drain hole.


According to this post http://www.motobrick.com/index.php/topic,2883.msg16783.html#msg16783 (http://www.motobrick.com/index.php/topic,2883.msg16783.html#msg16783) it is either the input shaft seal or the clutch pushrod seal and that I have to pull the tranny either way.


So I am assume I might as well go ahead and replace both while I am in there - as well as doing a spline lube.


My question is, is there anything else I should do while I have the tranny dropped? Also how urgent is this? If I keep it topped up with gear oil can I ride for three or four months till the rainy season starts or should I take of this right now? (I know, I know, I SHOULD do it now but I want to ride it a little before it rains again for six months...)

Ouch - I have been reading up in my Clymer's on how to do this and it looks very tricky.

This thread http://www.motobrick.com/index.php/topic,4542.0.html (http://www.motobrick.com/index.php/topic,4542.0.html)


Scares me, am I crazy to even think of doing this myself?



Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on January 04, 2017, 04:19:49 PM
Ride it until it becomes a real problem(rear tyre).Check the oil level regularly and enjoy your dry season.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Dennis de Vries on January 04, 2017, 09:10:56 PM
Ride it, keep an eye on it, it might even fix itself through use....
Bike turned out great!  :2thumbup:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 04, 2017, 09:22:17 PM
If that is transmission fluid leaking from the weep hole, you might have overfilled the case. I use my fluid level gauge to check the depth of the fluid as I fill my bike's case. If you just poured in a set volume and it exceeded the correct level, that might cause a seal to leak. Putting in the correct level and riding it may reduce the volume of the leak or the leak may stop altogether.

I'm surprised you hadn't done the input splines yet. Replacing seals and lubing the input spline shaft is just like everything else. Get your procedure in order first, then follow it step-by-step.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 05, 2017, 11:03:09 AM
I'm with Laitch on this.  Too much oil in the transmission can possibly let the oil leak where the clutch pushrod exits.  However, IMO you probably have a hardened o-ring at the clutch hub.  That will result in engine oil leaking. 

A good time to change that o-ring is when you are in there to do the splines.  If that's the problem, which I think it is, unless you are leaving puddles when you park, you should be ok enjoying your brick until the rainy season.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 05, 2017, 11:14:28 AM
OK great thanks.


I will order the parts and maybe when they arrive I will feel the urge to just get it done.


I freely admit that I have been putting off do a spline lube.  I had zero wrenching experience before I got this bike and just the fact that it is a six part video watching Chris Harris to a spline lube has me more than a little intimidated.  Still I have no doubt I can do it, I have managed everything else so far.


First thing I have do it is manufacture some kind of front wheel vice so I can jack up the bike and get it onto the Chris Harris box I made.  So far the bike has been on the center stand for the entire project but I know I have to take that off to do the spline lube.  I am sure with some 4x2 and some mdf I can knock something together that will hold the front wheel well enough to be able to jack the back of the bike up.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 05, 2017, 11:36:55 AM
I am sure with some 4x2 and some mdf I can knock something together that will hold the front wheel well enough to be able to jack the back of the bike up.
Look through the Projects section. There is plenty of inventive maintenance rigging in there.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on January 05, 2017, 12:07:43 PM

I got carried away with mine made mine out of 3" box section with multiple bracing. The definitive over engineering and overkill.  :hehehe
Regards Martin.

Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 05, 2017, 02:14:43 PM
I don't bother with the front wheel when doing stuff like pulling the transmission for spline lubes. 

My setup consists of a stack of 2 x 8 pieces about 10" long under the oil pan.  I notch the top piece to accommodate the drain plug.  I have made a saw horse that goes under the rear frame loop to support the bike when the centerstand is removed.  I made the horse just high enough that the front wheel is just off the ground. 

Another stack of wood helps to support the transmission when you pull it back.  I use a floor jack with wheels and a pair of 8mm x 4" bolts with the heads cut off the slide the transmission in and out of the clutch pack.

A handful of 12" long cable ties holds things like brake calipers to the frame after they are removed.

As far as the leak, I found that after 24 years/116,000 miles my rear main seal was still ok, and that the oil was coming from the o-ring that had hardened to where it was so brittle it crumbled when I pulled it out.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 11, 2017, 12:38:34 PM
Today I installed the new ABS modulator, bled the brakes and took her out for a ride!!!  :mm :riding: :bmwsmile

All in all it felt good, though they were a couple of niggles.  The speedo and odometer don't work, has anyone ever had that before?

Before I get harangued that was a joke...  I know all about the numerous threads on the subject and will dive into them and see how it goes.

The brakes are kinda mushy - I will rebleed and see if that helps. The ABS does appear to work, at least I get the warning lights when I start up but it goes out once I get moving so looks good.

One of the side cases is loose and rattles a lot, I think I have seen threads on that as well.

Basically I am very very happy. It was great to get it out on the road after so many months, even if only for a five mile shake down ride.  My plan now is to go all over it and check everything is still tight then take it to the government test center on Saturday to get it certified road worthy.

A huge thanks to all of you for your help and guidance, I could not have done it without you! :clap:



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 11, 2017, 12:44:01 PM
The speedo and odometer don't work, has anyone ever had that before?
Very funny! I'm glad you still have your sense of humor.  :clap:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 11, 2017, 01:20:00 PM
Re: speedo/tach.  Unless you are just pulling our legs, I only have one word to say.

 DEOXIT...

Otherwise, congratulations on getting another brick on the road.  I am very relieved to hear the ABS is working. 

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 11, 2017, 01:25:36 PM
Yep, I did deoxit it once but will take it apart and try again... for now though long live GPS speedos on phones
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on January 11, 2017, 01:26:40 PM
 :2thumbup: Now go ride it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on January 11, 2017, 02:39:01 PM
Congratulations! :2thumbup:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 11, 2017, 05:38:01 PM
Yep, I did deoxit it once but will take it apart and try again...
The odometer problem has gear replacement solution as a likely solution. Check the speedo sensor connection near the side panel for corrosion and good fit. The sensor itself can be removed and inspected, too.


First though, ride it to hell and back, which would be Honduras, I guess.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 14, 2017, 09:23:10 AM
I cleaned and sanded the pins on the speedo unit then used lots of deoxit. I also cleaned and deoxed the speedo sensor connection and lastly I removed and cleaned and reinstalled the sensor on the final drive.


Still nothing.


The odd thing is that on the short shake down drive I did the speedo needle moved from 0 to around 22 mph and has stayed there - it hasn't moved again - either up or down.


Is there any test to see if there are pulses coming from the speedo sensor in a attempt to narrow down where the error is?


The problem is I discovered that as part of the RTV (road worthiness test) they put the bike on a rolling road and test the speedo, if it doesn't work you don't pass so I have to get this resolved before I can make the bike legal.

Other than that it is riding great, the brakes have bedded in now I have ridden it a bit more, it is smooth and comfortable and the gear changes are pretty good, as long as you blip the throttle on a down shift anyway.  I did a 20 mile or so ride yesterday, some in the city, some in traffic and a little bit of open road.  I am gonna love this bike, that much I can tell for sure!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 14, 2017, 09:30:56 AM
One thing that might be happening is friction on the needle against the faceplate. Then there's this. (http://www.k100-forum.com/t1026-rear-wheel-speed-sensor)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 14, 2017, 10:00:44 AM
Soldering iron test did show anything so I still don't know if it is the sensor or the speedo.


I am going to see if I can take the instrument cluster apart further to get to the actual clock and see if it is rubbing anywhere (it doesn't appear to be on a visual inspection but it is hard to be sure)
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 14, 2017, 10:25:01 AM
Is the needle still stuck on 22mph?   Chances are good the faceplate has wrinkled.  I suspect this will be a problem in your part of the world.  Even in the cooler latitudes I notice a little bit of buckling on hot summer days.  Now, when I park I leave my gloves on top of the instruments to keep the sun off the faceplates.

When you get into the instrument cluster, it will be a good time to calibrate the speedo.  There are a lot of good threads and information here and on other forums.  If you have the skills with a soldering iron and good eyes, you can also change the clock to 12 hour display.  Then there is the opportunity to change the bulbs in there to LED's.

Also, Before you do anything with the cluster, check the speed sensor connector that is located on the right side of the bike near the rear brake fluid reservoir.  Clean it and do some continuity checks down to the sensor and up to the cluster.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 14, 2017, 10:55:32 AM
I have checked and rechecked the sensor, as far as I can tell it is connected fine.  The loom is one I installed after buying the bike and everything works on it great so if there is a problem with continuity I am going to assume it is from the sensor, two looms with bad connections from speedo sensor seems too much of a coincidence.


The connection IS broken at the sensor end but as far as I can see the spades connect up well.


I took the instrument cluster apart and reset the needle to 0, it seems to move freely and isn't touching the plastic faceplate or the speedo backing.


Put it all back together and still nothing.


When I cleaned the pins in the cluster they were totally corrosion free so I am thinking my next step is a new (to me at least) speedo sensor and take it from there. 


Meanwhile I will put the fairing back on and continue to ride and rely on a GPS speedo from my phone.


BTW I am blind as a bat and a gorilla in boxing gloves can probably solder bet than me so I will leave the clock alone....

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 14, 2017, 11:01:47 AM
The connection IS broken at the sensor end but as far as I can see the spades connect up well.
The sensor can have an internal break so replacing it makes sense. Your cleaned and checked instrument cluster is certainly ready to utilize it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 14, 2017, 11:45:31 AM
eBay is your friend.  $25 with free shipping. 

I checked the numbers and it's a fit.  P/N 61 31 2 305 839

http://www.ebay.com/itm/2000-BMW-K1200-RS-Speed-Sensor-160044-/322350237151?hash=item4b0d9245df:g:uacAAOSwj85YRdTv&vxp=mtr
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 14, 2017, 12:36:24 PM
The sensor can have an internal break . . .
but it could also just be a break in a wire somewhere between the sensor and the connector.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 14, 2017, 01:17:46 PM
With the molded in pickup coil, the problem, if it is a broken wire it is much less likely in the molded in coil.

BTW, I would pull the sensor and clean the face of any metal particles and then look in the hole to confirm that the signal disc is turning with the rear wheel.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 14, 2017, 01:21:03 PM
With the molded in pickup coil, the problem, if it is a broken wire it is much less likely in the molded in coil.
There is a length of wire going from the pick up to the connector, right? He's already cleaned the pick up, reply #197.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 14, 2017, 01:53:56 PM
"There is a length of wire going from the pick up to the connector, right?"

Exactly.  My post was meant to reinforce your hypothesis that the break was most likely in the cable.  It is possible that there is a lot of metal bits in the oil, and wiping the sensor will reveal if anymore was picked up. 

The main thing is to check that the slotted ring is indeed turning to generate a speed signal.  It's unlikely that it isn't, but it's easy to check and eliminates another possible problem.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 14, 2017, 03:38:50 PM
The brass ring seems to be turning just fine.  I have cleaned the end of the sensor a couple of times and it has never come away full of metal shavings etc.  I have also changed the final drive oil during the rebuild.


I am hoping very much it is the sensor, if not I might have to buy a whole instrument cluster which is going to be much more expensive.


I ordered a sensor but as always as I live way out like I do I am not going to get it for three weeks or so so until then I will just continue to ride and enjoy the bike (and hope not to get stopped by the local constabulary)  :bmwsmile :riding:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 14, 2017, 03:42:46 PM
Just keep an eye on your GPS.  It's way more accurate than the official speedo. 

Must be nice to have a brick in a world of bumblebees.  ENJOY!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 14, 2017, 04:07:58 PM
and hope not to get stopped by the local constabulary)  :bmwsmile :riding:
If you've got a speedo app on your phone that has a large display, your phone is in a cradle that allows a fairly heads-up view and you have a pocketful of expendable paper money, that will show them that your intentions are good, and so are their prospects. It's a winning situation for everyone.

* speedo app.png (129.42 kB . 576x398 - viewed 360 times)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on January 14, 2017, 04:12:44 PM

Bicycle speedometers can be had cheap, and if installed correctly are accurate.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on January 14, 2017, 04:24:29 PM

http://www.k100-forum.com/t1026-rear-wheel-speed-sensor#5669 (http://www.k100-forum.com/t1026-rear-wheel-speed-sensor#5669)
Hope it helps at least in testing the sensor, voltage output between .5 and 5.5 V AC depending on speed.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 14, 2017, 05:58:38 PM
Can't believe I didn't remember this earlier.

Has a function that will test your speedometer as well as make it possible to calibrate it.

http://www.k100-forum.com/t2038-karamba-speedometer-calibration-program-tutorial
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 15, 2017, 07:26:35 AM
That Karamba program looks great!   I am a member of the K-100 forum and the instructions just talk about going to the download section but it seems not to be there.  Does anyone have a copy of the software they could send me?
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 15, 2017, 08:51:02 AM
Try this link:

http://hrsbstaff.ednet.ns.ca/bvogel/karamba.htm
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 15, 2017, 09:04:44 AM
The version at the link I posted is an earlier one that does not have an English language option.  It will work to test and calibrate the speedo on a 4V K100RS with a stock rear tire.  It is pretty intuitive, and a few minutes fooling around with it will get you up to speed. 

All you need to add is a 3.5mm stereo plug with two wires with flat blade connectors.  The instructions for the cable are in the first link I posted.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 15, 2017, 12:14:22 PM
Great thanks
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 17, 2017, 04:08:25 PM
I passed the road worthiness test today!  Now I am only a couple of steps away from having a number plate and being official


That is the good news, the less good news is that the bike feels pretty under powered and when I pointed a laser temperature gauge at the exhaust headers I noticed that number two was significantly cooler than the others. Not cold and I would say too warm to be simply ambient heat from the other headers.  The rest were reading about 190 C and two was reading 140 C.


I will take off the fairing this weekend and delve deeper but any suggestions of what I should look for what would be appreciated.






Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 17, 2017, 04:25:21 PM
I will take off the fairing this weekend and delve deeper but any suggestions of what I should look for what would be appreciated.
That cylinder might be running rich. Compare plugs. Did you ever adjust valves and balance throttle bodies?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 17, 2017, 04:29:05 PM
Throttle bodies yes and now I come to think of it that one was running pretty rich, the problem is the PO had clearly messed with the not to be touched throttle body screws so I was having a hard time getting things smooth and at a decent tick over, I imagine it needs more tweaking.


The valves I didn't, I watched a Chris harris video on how to do it and he says very clearly - if you have 16v K bike you are wasting your time don't bother with the valves, they never get tight.


So I took his advice and didn't, though i think I will during the rainy season just to increase my knowledge of the bike.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 17, 2017, 04:49:37 PM
. . . if you have 16v K bike you are wasting your time don't bother with the valves, they never get tight.
I'd usually go with what Harris is saying but your bike was in such a sorry state, I'd be compelled to check the clearances. I'm not one who goes looking for something to do either. I'd rather be riding.

Anyway, the plugs might have something to tell you and that's easy enough.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on January 17, 2017, 04:50:13 PM

www.k100-forum.com/t1526-how-to-balance-the-throttle-bodies-solved
It is possible to rebalance the TB's.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 17, 2017, 05:05:39 PM
www.k100-forum.com/t1526-how-to-balance-the-throttle-bodies-solved
It is possible to rebalance the TB's.
Regards Martin.
St. Paddy's day come early this year in OZ, Martin?
Title: Re: K100RS parked for four months outside in all weathers
Post by: bocutter Ed on January 17, 2017, 05:06:57 PM
I think he spent too much time on the south side of that palm tree ...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 17, 2017, 05:17:27 PM
Thanks, I actually followed that procedure firs time I balanced the throttle bodies (the second version in the post, the one that doesn't use a T connector becasue I couldn't find one)


Anyway I thought I had them quite close but apparently not.  I will have another go over the weekend.  At least it does run, it just feels a little sluggish on the pick up and kinda lumpy over 4500 revs or so. 


I am not too worried, I expected some teething troubles, this is, after all, the first time it has been ridden for a couple of years or more.  There are bound to be some cobwebs to be blown out.  Loving the bike though and getting LOTS of admiring looks and thumbs ups, it is nice to be back in the fold of the biker community!


Oh btw the speedo needle shifted a little again when I rode it.  I checked the GoPro footage and it slowly creeps up from 0 to close to 30 mph once I get passed 60 KPH but then stays there.  I am waiting to go and buy a 3.5mm stereo jack so I can try the Karamba program and will report back my findings.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 17, 2017, 05:37:27 PM
Can you recall if you had the injectors serviced?  If not, I would suspect #2 is bound up a bit.  Not enough to stick fully open or closed, but enough that it isn't closing quickly enough. 

Have you run any Techron through the bike?  I would get a couple bottles and dump a half bottle in each of the next 4 fill ups.  Old fuel glues things together, and it sometimes takes as much as a couple thousand miles to get things running properly.  I know, been down that road with my K100RS and a couple other dormant engines.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 17, 2017, 05:40:44 PM
The injectors were cleaned by the mechanic that took a look at it just after I got it.  However that is a good point, he messed up pretty much everything he touched so I will have them done again.


Not sure I have seen Techron here but there has to be something similar available so I will try that as well.


Thanks for the tips.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 17, 2017, 05:47:04 PM
As far as balancing throttle butterflies, I would hold that as a last desperate action after I have exhausted every other option.  Right now, it looks like you have a funky injector.  Do the Techron and keep an eye on the exhaust header temperatures to make sure you aren't getting into a dangerously lean situation.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 17, 2017, 05:49:07 PM
This is the stuff right?


https://www.amazon.com/dp/B00092893E/ref=twister_B009SPGRQ4?_encoding=UTF8&th=1 (https://www.amazon.com/dp/B00092893E/ref=twister_B009SPGRQ4?_encoding=UTF8&th=1)



Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on January 17, 2017, 06:03:49 PM
Yes, I would think almost any large auto parts place will have it.  Around here they almost always have some kind of special deal like buy 1 get 1 50% off. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on January 18, 2017, 02:02:03 AM

I saw the post as I was about to go out so you are lucky to get it in any colour. Besides I am red green colour blind and the Honorable Minister for Finance and Recreation is half Irish, and Palm trees keep the snow away. Any more complaints please send to my complaints department.
 :neener: :neener: :neener:

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 18, 2017, 10:24:54 AM
Any more complaints please send to my complaints department.
Complaints? Certainly not! I wanted to be in the loop. OZ is a happening place! :yippee:
Title: Re: K100RS parked for four months outside in all weathers
Post by: bocutter Ed on January 18, 2017, 10:32:55 AM
and Palm trees keep the snow away.
... not a complaint. Just noting that up here in snow country moss (green stuff) grows on the north side.  :yes
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on January 18, 2017, 10:50:18 AM
Just noting that up here in snow country moss (green stuff) grows on the north side.  :yes
I'm lichen that response!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 23, 2017, 05:57:15 PM
This weekend I took my wife for a quick spin - (I didn't tell her I had no rear brake but more on that later...)


To say she liked it would be going too far but she didn't get off a quivering nervous wreck nor did she scream the entire time she was on board so there is hope!  :2thumbup:


Meanwhile as previously mentioned I seem to have developed a major rear master cylinder leak.  I took it apart and cleaned everything but if anything that made things worse.  Time for a rebuild kit I guess... sigh


Still the bike gets lot of comments wherever I go on it and I am starting to discover there is more of a classic bike scene than I had previously thought  :riding: :bmwsmile
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 26, 2017, 03:13:56 PM
I got the new speedo sensor yesterday - sadly the problem persists.  I am going to strip and work more on the speedo itself as well as the infamous pin connectors.


What can be making the needle move a bit but then stay put, not drop back down to zero even with the power off?  I have checked and it isn't the needle touching the plastic cover, even out of the cover altogether it stays where it was.  I can move it back to to zero myself and it seems to move fairly easily but there is a some resistance.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on January 31, 2017, 02:26:42 PM
I got the rebuild kit for the rear master cylinder and it is dead simple to install.  The only problem is I still have a brake fluid leak from the master cylinder.  I am not 100% sure but it seems like it is leaking at the top of the cylinder where the plastic hose connection pipe goes into the aluminium master cylinder.  When I took the MC off it was definitely proud of the surface of the cylinder and when I pushed it down a little stream of brake fluid shot out. The leak is much better than it was, good enough to be able to top up the MC and ride but nonetheless I want to cure the problem.
There doesn't seem to be a replacement part available.  Has anyone ever taken off and refitted this part?  I really don't want to buy a new MC... and that includes the chineses alternative youngengineer posted about.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 01, 2017, 06:45:31 PM
Big day today - finally, after what feels like forever, the bike is 100% legal in CR.


Now I can insure it tomorrow and planning beach, volcano, rain forest trips and cloud forest with my wife!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on February 02, 2017, 04:54:51 AM

 Have a look at this its supposed to be brake fluid proof.   http://eclecticproducts.com/_tds/sealall_tds.pdf   then click on products then click on Seal All. Or type in brake fluid proof sealant on the net.
Regards Martin
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 02, 2017, 06:28:48 AM
Perfect, I will give it a try, thanks very much
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 02, 2017, 06:40:13 AM
Unicorn Spit will be part of my gift-giving from here on out.
:giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 10, 2017, 05:19:01 PM
Today I found out that I am not so much down on power from the engine more that the clutch is slipping...


It has been getting steadily worse and now is very noticeable.  Not only does the clutch not engage till the last 1/2 inch of travel on the clutch lever if I accelerate hard the revs rise but the speed doesn't, it takes a while to catch up.


Looking at Max BMW just a clutch plate is the best part of $220  :musicboohoo: (part number 5 in attached diagram)


Does any one know if there are non OEM alternatives?


Also is it JUST part no 5 I need to replace or should I be looking to replace part no 4 the pressure plate as well or any other bits?


Is there any chance the clutch is fine and something else is making it slip ( i did have a transmission fluid leak from the clutch boot recently)


Lastly has anyone ever put  in a use clutch?


Help, funds are kinda tight right now but I really want to get the work done before the rains start... so any tips that might save a few bucks would be great

I see Motobins has one for £72 for the standard or £85 for the heavy duty and even an Italian one for £44, that is already a good start compared to $218, has anyone tried any of these?






Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 10, 2017, 05:53:02 PM
Today I found out that I am not so much down on power from the engine more that the clutch is slipping...
First, be certain that all your lever and cable measurements and adjustments are correct, and that nothing is impeding clutch arm travel. If there is no engine oil leaking from the transmission weep hole, and all adjustments are correct, you might only need part 5. The compression ring, o-ring, clutch nut and cover bolts are also candidates for replacement but if there is no sign of leakage and the bolts weren't a problem, it's a coin-toss. Because shipping is problematic, you might want to do it all at once.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 10, 2017, 06:05:43 PM
I have purchased but not yet installed a replacement clutch cable (the one on the bike isn't a BMW one).  Maybe the best thing to do is install that and make sure it is all correctly adjusted and see if the problem persists?


As to the o-rings etc yes it says all over Max BMW replace if you do any clutch work so I assumed I needed those but they are luckily cheap parts not hundreds of dollar like the pressure plate etc.


Thanks, as always, for the help
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 10, 2017, 06:10:18 PM
I have purchased but not yet installed a replacement clutch cable (the one on the bike isn't a BMW one).  Maybe the best thing to do is install that and make sure it is all correctly adjusted and see if the problem persists?
That's definitely the strategy. Measure carefully. Lube the handlebar lever pivot on the cable end, follow the adjustment procedure in sequence.


That might be all there is to it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 10, 2017, 06:39:26 PM
I'm pretty sure you don't need to disturb the clutch nut, compression ring and the o-ring to do the clutch as long as you leave the housing in place.

Here's a clutch from a K1100 with only 35k miles on it.

http://www.ebay.com/itm/Clutch-assembly-K1100RS-BMW-95-may-fit-k75-k100-s-rt-lt-K10-/122273593739?hash=item1c7812f98b:g:H10AAOSwux5YViP6&vxp=mtr
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 10, 2017, 06:58:17 PM
only 35k? What would you expect to get out of a clutch normally? 70K? If it is half life and it is all the parts yes it is a good deal and I will probably jump on it...


Good find, thanks
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 10, 2017, 07:16:15 PM
only 35k? What would you expect to get out of a clutch normally? 70K? If it is half life and it is all the parts yes it is a good deal and I will probably jump on it...
I think you're jumping the gun but on a well-adjusted and intelligently ridden bike with no transmission fluid or oil leaks into the clutch area, a 70K or more is not uncommon.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 10, 2017, 07:42:07 PM
My K75RT has 80k miles and the clutch still isn't half way to the service limit.  On my K100RS with 116k miles the clutch is just past half way.  I think they were just a hair over and under 5mm and the service limit is 4.5mm.  A new clutch is 5.5mm.

Bottom line, at 35k the friction disc should be almost new.  I would figure that you should get at least 5-6 years at 10k per year, probably a lot more.  A lot depends on how you ride and how you keep things adjusted.
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on February 10, 2017, 07:47:49 PM
I'm pretty sure you don't need to disturb the clutch nut, compression ring and the o-ring to do the clutch as long as you leave the housing in place.

Here's a clutch from a K1100 with only 35k miles on it.

http://www.ebay.com/itm/Clutch-assembly-K1100RS-BMW-95-may-fit-k75-k100-s-rt-lt-K10-/122273593739?hash=item1c7812f98b:g:H10AAOSwux5YViP6&vxp=mtr
Thanks for this link, Gryph! I'm gonna buy a part off of him.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 10, 2017, 07:50:00 PM
Dude, that link is for Filmcamera.   :nono
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on February 10, 2017, 07:55:02 PM
I didn't buy the clutch assembly, I bought the center stand ;)


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 10, 2017, 08:12:47 PM
I got the clutch assembly, thanks Gryph


On another note I have changed out the speedo rear sensor, cleaned the pins ad nauseum and nada.


I am thinking the gauge unit needs changing.


I have the possibility of buying one from a fellow motobricker but the photo he sent it looks slightly different to mine.


Mine is the first darker ratty looking one...


Apparently his comes off a 89/90 K100LT - as far as I can tell it should fit fine with my 1991 K100 RS but a little confirmation would be great.











Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on February 10, 2017, 08:14:37 PM
Go on maxbmwmotorcycles.com to check if his will fit your bike. That's what I did for he centerstand I just bought. I compared the part numbers for both bikes.

Those clusters are $1151.00 new!! What do the sell for used?


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 10, 2017, 08:16:32 PM
Yeah I tried that but because it is the whole cluster in one piece I don't have a part number I can use as a reference
Title: Re: K100RS parked for four months outside in all weathers
Post by: MaraudeRS on February 10, 2017, 08:19:37 PM
(https://uploads.tapatalk-cdn.com/20170211/9ac5e15cf24fbdefa5ac9eaa5d33b7ae.jpg)

Looks like yours is part # 62 11 2 305 258


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 10, 2017, 08:43:12 PM

Now I am confused - if I put that part number into Real OEM - 62112305018 it says it was on the K589 K1 and K100RS as well as K1100's

But if I get the part number for the k100LT - 62111459901 it says it was also on the K589 K100RS

So one side says it is the same and the other says it is different.

I am fairly sure it would work with my bike.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 10, 2017, 10:06:54 PM
I can't speak to interchangeability, but I have noticed that all the brick models with Paralever final drives and Motronic engine controls have a different cluster from the models with Monolever and Jetronic.  It would take a good look at the schematics to see where things like tach signals are coming from and what kind of signal is generated in the final drive. 

On the surface, it is easy to see that the meter movement is different between the two different models as far as the angle the needle swings through.  To me this raises a flag that says there may also be something different behind the panel that will affect how the instrument works. 

IMO, unless someone else has used a 2v K100 cluster successfully on a 4v model I would avoid setting myself up as a guinea pig. 

On the other hand, there are a number of clusters on my favorite source for used parts.  There is a cluster there for $60 or best offer.  If you have good glass in your cluster, this could be a very attractive, cost efficient option. 

http://www.ebay.com/itm/1993-BMW-K1100-LT-Instrument-Cluster-151013-/221793400100?hash=item33a3eab524:g:rLcAAOSwpDdVccQ~&vxp=mtr

If you are interested confirm with the seller that it is a working cluster before making an offer.  That will be an important point if you need to file a claim through eBay. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on February 10, 2017, 11:01:40 PM

If it's just the glass that is crazed they can be cut out and duplicated. But it is not a job for the faint hearted, you need a Dremel and a very steady hand ( I made up a jig to make mine into a router so I could not cut too deep). Had a plastic Perspex specialist shop make me up a couple of sets. a full glass including all the markings . And a left and right side necessitating leaving the middle portion, this is the easiest way. Cost me $20.00 for the three pieces.  Once cut out you need to glue it back in with acid free silicone.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: billday on February 11, 2017, 09:59:38 AM
Hey Filmcamera, my advice is just buy a new one. I have gone through a few on my K100 and a fresh start beats fussing with the innards, in my opinion. The price has been going down lately too.

One exception: The odo/trip odo unit can be serviced or replaced, and that can be worth doing. And there are a couple of tricks for coaxing flakey speedos back into service, but mostly that involves chasing gremlins, which is not my thing.

The units are as far as I can tell are interchangeable across all the K100s and K75s. The very early units should be avoided because they lack a modification that allows moisture to vent. The early units have two distinguishing marks: (1) they have two low-fuel lights on the face, and (2) they lack two circular openings on the back, which is the crucial moisture ventilation mod.

Flakey instruments can also be caused by worn/abused connectors at the end of the wiring harness (two oblong blocks of connectors that go into the back of the instrument box). Flood those connectors with Do-Oxit or the like but DO NOT use any kind of grease on them. Each one works through a very delicate spring. I actually spliced a new pair of connectors onto my bike's harness. It was a lot of soldering but it's held up fine. In retrospect I might have been better off swapping the entire harness but for whatever reason I wasn't up for doing that much disassembly that winter. Can't remember why.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 11, 2017, 10:11:06 AM
I am looking to buy a new cluster.  I have sanded and used deoxit and cleaned every part of the cluster connections four times and also changed the speed sensor and still nothing on the speedo, I even installed and tried the Karamba speedo program with no luck .  Thanks to TMG for pointing me in the right direction for one on eBay.



Title: Re: K100RS parked for four months outside in all weathers
Post by: kennybobby on February 12, 2017, 01:13:37 PM
i had to solder the little spring clips to solve mine--it doesn't allow for quick disassembly, but i've not needed to ever since.  If i did it is easy enough to desolder them with copper wick.  The vibration of the road over time wore the pins and spring clips to the point of a gap in the contact, which is why sliding electrical contacts are to be avoided if possible.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 18, 2017, 03:35:51 PM
Today I have started the process of changing the clutch as well as doing a spline lube etc.


One bad thing, I removed the exhaust and the exhaust outlet for number two cylinder (which was always running cooler than the others) has oil on it (see photo) is this seriously bad news? Are we talking pistons rings? When I did a compression test it was lower than the others but still 125 compared to 135 for the rest so in theory not too bad.


Anyway I have also attached some pictures of the splines, I would like to hear some opinions on them, I am not experienced enough to be able to tell a good one from a bad one...



Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on February 18, 2017, 04:06:26 PM
Your splines,both male and female,look good.My experience is the females ware out earlier suggesting harder males.I hope that translates....
The oily exhaust stub suggests a possible weeping exhaust valve guide/seal.I personally would just let it be for as long as possible.Get a follower to report on any blue haze from the exhaust silencer.That valve will be the first to die.Now,Don't ask me how I know...(half a million km on old triumphs:(
"Excessive"Oil consumption and status amongst the Friends of the Earth are some reasons to rectify early.Otherwise,keep on trucking.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 18, 2017, 04:22:56 PM
Great thanks, that makes me feel a whole lot better.


Meanwhile I am struggling with a wrung out bolt on the clutch pack - I mean really how the heck did anyone manage to wring out that bolt? PO was clearly a total body building type or something.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 18, 2017, 05:21:31 PM
Ok I drilled out the messed up bold and managed to get the clutch pack out.  Now I am just confused (again  :dunno ) I read that a new clutch plate is 5.5 mm thick and is usable up to 4.3mm.  The second hand one I brought came with 5.4mm so I was very happy - seems like it is basically brand new.  The problem is when I measure my old one it is 7mm thick.  Did the 16v bikes have a different plate? Were there after market heavy duty clutches available?


I did notice that the inside of the clutch housing is filthy dirty, covered in oil etc.  Maybe a leaking rear main seal?  I also found some oil residue on the clutch plate which would probably explain the slipping.


Not sure what my next step should be, any ideas?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on February 18, 2017, 07:48:36 PM
Not sure about clutch for your model but sounds like rear seal and the o-ring need replacement


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Title: Re: K100RS parked for four months outside in all weathers
Post by: thecableguy on February 18, 2017, 08:01:43 PM
Not sure about clutch for your model but sounds like rear seal and the o-ring need replacement


+1  Do it while you are in there...


Jim
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 18, 2017, 08:07:01 PM
I have the o-ring on the way, should be here Tuesday. Now I have to decide whether to leave the bike in bits for two more weeks while the rear main seal comes down - but it sounds like the right the thing to do - damn more dry season time gone...  :yow
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on February 18, 2017, 08:12:20 PM
You need a new large nut and the bolts for the clutch pack


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Title: Re: K100RS parked for four months outside in all weathers
Post by: riots100 on February 18, 2017, 08:26:40 PM


I had a similar issue with my K75, where the number three cylinder exhaust pipe had oil on it.  And the number three cylinder compression was lower than the other two.  It turned out to be a bent connecting rod caused by hydrolock.  I outlined my process of discovery and repair in this thread (http://www.motobrick.com/index.php/topic,7661.0.html).


The lower compression resulted is less fuel (and oil) burn.  The unburnt oil escaped out the exhaust valve and fouled the exhaust manifold and pipe.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 19, 2017, 04:31:22 PM
I remember that thread, it does sound like a similar issue, though without the bad FPR in my case I think.


Thanks for the advice.


I am going to change the o ring and clutch seal as a well as the nut etc.  I also have the main seals for the transmission so I will do that as well.


Not decided what to do about the clutch but with 7mm left on it there is no way it is worn out.  So I am planning to change the clutch cable, give everything a good clean out reassemble it and see how it goes.


Meanwhile I am going to respray some of the bits I have off the bike like the swing arm etc since it seems like a good opportunity to do so.


Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 19, 2017, 04:47:18 PM
If the friction disc has been oil-soaked, I'd replace it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 19, 2017, 05:03:33 PM
I think you are right, I do have a used one as which also came with the the pressure plate, the cover and the diaphragm spring and they came as a package so it makes sense to install them.


Trying to clean up the back of the transmission case (my word it is a mess back there, all the black gunk on the floor in the photo came out of there - I am amazed the GPI still works) I see that the boot that goes on the end of the swing arm is crushed and at a guess has not been connected for years.  I am going to try and rescue and reuse it but how vital is it?







Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 19, 2017, 06:53:23 PM
I am going to try and rescue and reuse it but how vital is it?
All boots should be in good condition to repel infiltration of moisture and grit.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 19, 2017, 06:59:03 PM
figured - ok so I am going to see what I can to do rehabilitate the old one, it looks like it wasn't attached but was being squashed by the swing arm so it is out of shape, not torn though luckily.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on February 19, 2017, 07:46:57 PM

While your at it fit a grease nipple to the clutch arm and waterproof the gear position switch with something like Plasti Dip.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 19, 2017, 07:59:59 PM
Good idea, the GPI works but the back cover is missing so all the wires are exposed which has to mean it will fail sooner rather than later.  I have seen the grease nipple thing done, not really sure why it is done but what the heck in for a penny in for a pound so I will see if I can do that as well.  Apart from anything trying to work out the spanish for grease nipple will be a fun challenge!


Quick question, if I cover the opening in the tranny where the swing arm attaches with a plastic bag is it safe to go at the rest with a high pressure spray gun or is that asking for trouble - there is SO much gunk in there I am having a tough time cleaning it out
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 19, 2017, 09:14:36 PM
  Apart from anything trying to work out the spanish for grease nipple will be a fun challenge!
Grasera (http://www.lubricom.com) would work in Miami.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 19, 2017, 09:24:58 PM
. . there is SO much gunk in there I am having a tough time cleaning it out
What are you using for crud removal? Surely somebody here has a favorite concoction to recommend.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 19, 2017, 09:45:31 PM
Right now just a degreaser - the crud is basically oil mixed with road dirt. That has gotten rid of 85% of it but to try and get it actually clean I need to get the last 15% off as well. Water seems obvious but I don't want to screw anything up any more than it is already
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 19, 2017, 09:46:28 PM
Some quality time with a table knife, thin pieces of wood, scrapers and paper towels to remove as many of the chunks as possible.

Follow with an old hair dryer to soften what is left so it can be wiped up with more paper towels. 

Follow that with mineral spirits brushed on with a cheap paint brush.  Let it soak for a few minutes, keeping the surface wet, then wipe with even more paper towels.  If you cut the paint brush bristles to about half their length will make them a little stiffer and better for working the spirits into the goo.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 19, 2017, 09:52:19 PM
Concentrate on getting the moving parts, the GPI switch, and surfaces where the boots are attached really clean.  Anything else is going to be wasted effort since it will be dirty the first couple times you take the bike out, and nobody is going to see it anyway.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on February 19, 2017, 10:35:26 PM

Both the GPI and the clutch arm are subject to water and road crud. The GPI's were never waterproof and benefit from a clean and waterproofing it will extend it's life expectancy. The grease nipple on the clutch arm allows for lubrication, and allows for the crud and water to be kept out. Any crud that does get in will be pushed out when you grease it. There is a post on fitting the nipple.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 21, 2017, 01:27:41 PM
Ok I think I have finally hit an 'oh sh*t' moment.


As stated before in this thread I was leaking some transmsission oil out othe the bottom of the tranny.  Research suggested that it was either Input Shaft Seal or the Clutch Pushrod seal.  Since I have the tranny out I decided to go ahead and replace them both.


The input shaft seal was pretty easy and is installed no problem.


The Clutch pushrod seal however is another story...


In the thread about it Frankenduck says "This seal has a metal collar with a very tight tolerance and it takes some work with small tools to pick the old one out"




I have been been working at it for 45 minutes and have totally destroyed the old one but cannot get it out.


Any suggestions would be very gratefully received - at the moment my only thought it to take the tranny to a BMW mechanic and say "I screwed up"

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 21, 2017, 06:54:06 PM
It is hard to take a good pic but this is what I mean - it is the part ending 1159 in the fiche
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 21, 2017, 07:31:07 PM
It is hard to take a good pic but this is what I mean - it is the part ending 1159 in the fiche
It can be an ordeal working around a seal and moving it slowly out of its seat. Are you using tools like these or something else?

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 21, 2017, 08:05:28 PM
Yes, I am using a couple of picks, one with a 90 degree turn and the other with 45.  I guess I will just keep at it tomorrow - on the good side I did install my new LED driving/fog lights today. I also received the clutch o-ring, nut and thrust washer.  After a hell of a battler I managed to undo the old nut so progress there.


I also repainted the swing arm and paralever but am not happy with the results. I used a matt black and it is too matt, doesn't really match the OEM so I am going to keep hunting for a semi matt or something.  I remember someone mention a rustoleum product that was a goo d match?? Can't buy it here but maybe I can have someone bring some down for me.


Lastly I tried to install my new clutch cable only yo discover the cable adjuster on the bike isn't original so I cannot fit the cable.  A quick $7 order on MaxBMW fixed that but now it is another week to get it.  Sigh - I do envy you guys who can jump on the bike and ride round to your nearest dealer.
Title: Re: K100RS parked for four months outside in all weathers
Post by: mystic red on February 21, 2017, 08:23:52 PM
Quote
Lastly I tried to install my new clutch cable only yo discover the cable adjuster on the bike isn't original so I cannot fit the cable.  A quick $7 order on MaxBMW fixed that but now it is another week to get it.  Sigh - I do envy you guys who can jump on the bike and ride round to your nearest dealer

Our local dealer, before he went out of business, didn't have K bike parts ten years ago. Had to order them and then I got to drive back in to pick them up. Think I did that twice.





Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on February 21, 2017, 08:27:03 PM
Agree, local dealer has no K bike parts in stock


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 21, 2017, 08:28:34 PM
Yeah I know it isn't quite as easy as I make it sound but a minimum of ten days gets depressing... as does close to doubling the cost when tax and shipping are added.


Still at least it IS possible to get parts still - long may that last.  Also - joy of joys - I came across another K bike owner here in CR- he has a K1100 LT he is looking to turn into a cafe racer.  I have the chance to score his old 35l top box to add to my iconic 22 l but I am in two minds about it.


My two picks are cheap CR ones, I have basically blunted the tips already so I may have to go to a better tool shop and get some decent ones
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 22, 2017, 10:54:49 AM
And it's OUT!


OMG if that seal ever needs replacing again I swear I will buy a whole new tranny rather than go through that 2 hours of misery again!


It seems the new seal is an upgrade on the old one so the design is slightly different.  Before I try and install it can I confirm which way up it goes?


I am pretty sure the side with the internal circular spring faces out towards the rear of the bike and the side with the flat portion face intowards the transmission.


Can anyone confirm this?


Thanks a very relieved noob mechanic...


Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on February 22, 2017, 01:41:29 PM
The spring is usually bathed in the oil it is sealing.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 22, 2017, 02:01:59 PM
OK so not what I thought, the opposite - the spring facing into the transmissions and the other side facing out?  I have taken a photo with the seal just gently placed where it goes without being pressed in so you can see what I mean.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on February 22, 2017, 07:06:08 PM
That looks ok to me.Imagine the oil within pressurizing to get out.The mechanics of the seal will tighten on the sealing surface.
The other way round and you'd get the opposite.
I've never had to deal with my pushrod seal so .....
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 22, 2017, 07:12:33 PM
OK thanks, unless I hear otherwise I will proceed with installing it like that tomorrow.


Meanwhile today I installed the new clutch (uggh it is a struggle without a clutch centering tool but I got there eventually).


I also joined the cool kids club and added a grease nipple to my clutch arm!


Lastly I got everything cleaned up and ready so tomorrow will be lube the splines and then reinstall everything.



Title: Re: K100RS parked for four months outside in all weathers
Post by: jimboknowsit on February 23, 2017, 10:07:41 AM
Hopefully nothing was stolen off of it.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 04:16:48 PM
Ok first I have something to admit.


I am a total blithering idiot and deserve whatever issues I have brought upon myself.


Now - what did I do?


I rebuilt everything, put the tank back on and tried to fire her up.  Nothing.  I tried again a few times and nothing.  So I started trouble shooting and eventually figured out that - idiot that I am - in my rush I had connected the fuel lines the wrong way round.  Phew I thought an easy enough fix - which I did - problem is she still won't start.


Could I have ruined the fuel pump or fuel pressure regulator? Messed up the injectors? Worse?


Is there anything else that could be causing it? 


The GPI works - the neutral light comes on and if I put it in gear the LCD on the instrument cluster goes to 1.


I though it might be the sidestand switch - on my bike it is a little electrical switch which is open when the side stand is down and closed when it is up.


I can't think of what else could cause a no start from a clutch change. (Yes I did reconnect the motronic)


The bike cranks great but zero sign of life


Other than those two things I am stumped, and fearful I have messed something up...



Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on February 25, 2017, 04:21:55 PM

Can you hear the pump, the four pin connector under the tank is a known source of problems. Try cleaning an reconnecting. Check fuse # 6 which supplies power to the pump.
Good luck regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 25, 2017, 04:24:39 PM
Can you hear the pump, the four pin connector under the tank is a known source of problems. Try cleaning an reconnecting. Check fuse # 6 which supplies power to the pump.
Martin, I wish you hadn't mentioned that. I enjoy a good self-administered public flagellation. Who doesn't, really?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 04:27:03 PM
Well no need to worry Laitch - I am sure there is much more wailing and beating of my breast to go yet.


Fuse no 6 is fine - the connection of the 4  pin is fine.


I COULD hear the pump when it was incorrectly plumbed - now I don't...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 04:31:44 PM
and gnashing of teeth - I love a good teeth gnashing when public humiliating myself
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on February 25, 2017, 04:35:37 PM

Sorry Laitch. Being as the pumps are DC they will run forward or backwards with no bad consequences. Pull your pump out and apply voltage and see if it works. Sometimes if they are jammed due to a foreign body, reversing the connections back and forth briefly will free them up.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 25, 2017, 04:38:17 PM
and gnashing of teeth - I love a good teeth gnashing when public humiliating myself . . .
Other than those two things I am stumped, and fearful I have messed something up...
This problem sounds like it's of Biblical proportions.

I doubt if you've messed up something. It's more likely there's an electrical connection that hasn't been made, one that has not been made completely, or something simple that's been overlooked.

How many seconds have you spent trying to get it started?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 25, 2017, 04:40:06 PM
The fuel hose in the tank is connected, right?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 05:00:51 PM
OK When the I checked the 4 pin connector for the fuel pump and fuel gauge I get voltage of approx 10v between white and brown and the fuel gauge works but when I opened up the tank and disconnected the electrical connection on the pump itself I get 0 volts.  That would seem to indicate a break somewhere from the tank connection to the pump itself.  Seems weird that I did hear the pump when the fuel lines where incorrectly connected and don't now.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 25, 2017, 05:11:57 PM
What's your battery voltage, currently? :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 05:22:48 PM
I have it on the tender but it is a little low - 11.5 at the moment


Ok when I take the pump off the bike and apply 12v it does spin but nothing when on the bike.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 25, 2017, 05:25:55 PM
I have it on the tender but it is a little low - 11.5 at the moment
Charge up the battery. Reconnect the fuel pump. Start up the bike.

Where do you put that battery when it's off the bike—not on a cement or stone floor, right?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 05:27:59 PM
No it has been sitting on a wooden floor - but I would love to know what is wrong with a cement or stone one...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on February 25, 2017, 05:38:50 PM

Check for power at the four pin connector.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 25, 2017, 06:04:13 PM
Check for power at the four pin connector.
Regards Martin.
He did—less than 11V.
. . . I would love to know what is wrong with a cement or stone one...
Save your love for animate objects.
. . . when I opened up the tank and disconnected the electrical connection on the pump itself I get 0 volts.  That would seem to indicate a break somewhere from the tank connection to the pump itself.Seems weird that I did hear the pump when the fuel lines where incorrectly connected and don't now.
You might have broken the connection between the sender and the pump when you disconnected the pump. Or you might have misapplied the meter, or the incoming sender wiring is wonky. Connect the pump, charge up the battery, give it another try and let us know what happens.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 25, 2017, 06:43:49 PM
OK When the I checked the 4 pin connector for the fuel pump and fuel gauge I get voltage of approx 10v between white and brown and the fuel gauge works but when I opened up the tank and disconnected the electrical connection on the pump itself I get 0 volts.  That would seem to indicate a break somewhere from the tank connection to the pump itself.  Seems weird that I did hear the pump when the fuel lines where incorrectly connected and don't now.

Can't think of any irrelevant witticisms to add to the thread so I will just offer some suggestions to help get you running.

First of all, the pump only runs when the starter is pushed, if the engine doesn't start it shuts off when the button is released.

Second, the four pin tank connector is notorious for lousy connections, especially for the pump.  It need to be squeaky clean, and in some cases(my K100RS) the female sockets need to be gently tweaked to get a better grip on the male pins.

As far as the reversed fuel lines,  I doubt that reverse flow on the fuel pressure regulator will damage it.  I know this because I have connected them ass backwards with no bad result.  Since there probably was no fuel pressure getting to the rail, there will be no damage to the injectors, they would be just about the last thing I would look at.

Test the fuel pump by disconnecting the return line from the rail and connecting a hose from the rail to a container to catch the fuel when the pump runs.  That will confirm that the pump is working and the filter and lines are clear. 

Since you had the transmission off, I would also suspect the side stand switch it will allow the engine to crank but not start, and there is no override for it.  But check the pump before going into that.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 06:51:53 PM
I did look at the side stand connector - I believe the one on the 16V RS is different to the ones that were on earlier bikes.


Here are two pics of the switch, one with the side stand down and one with it up - did I screw up when reconnecting it? (not the easiest thing to photograph but hopefully good enough)



Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 25, 2017, 07:17:43 PM
I can't say if the switch is installed correctly.  I can go out in the garage tomorrow to check mine.  Can't say if the contact is normally open or closed with the stand up or down.  The side stand switch isn't used on the earlier bricks.  They used a retractor connected to the clutch lever.

I would work on seeing if the pump runs when the starter is cranking.  You might want to hot wire to the tank connector to override the pump interlocks and do a static pump test first.  +12V to the green/white wire and ground to the brown wire. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 25, 2017, 07:24:30 PM
Man, am I screwed up.  Three bikes with different systems has my brain scrambled.

Just went out to the garage and checked my bike:

1.  Pump should run for a second when ignition is turned on. 

2.  Side stand down prevents pump from running. 

3.  Look at your side stand switch.

I'll look at mine tomorrow to see if there is anything I can add.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 07:27:59 PM
AFter much fiddling yes it did run.  I had 12v to the green and brown was neutral and the pump ran, I don't have the greatest set of cables for this kind of thing but both my son (who was helping me) and I heard a second or two of whirring an bubbling liquid...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 07:36:50 PM
The side stand switch seems a pretty simple beast, it is quite like the rear brake light switch.  When the side stand is down the circuit is open and when it is up it is closed - at least that is how it seems.  It seems maybe something with a relay maybe, I will try swapping it out tomorrow.


I can't think of anything else it can be.


The only other thing that made me pause for thought was a battery connection coming off the loom just after the motronic hook up. I could remember for sure if it was a live or ground connection but since it is black and short and couldn't easily reach the live battery terminal from where it is I am 99% sure it is a ground.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 07:42:40 PM
Oh one last thing which did stike me as maybe out of the ordinary but my memory fails me.


When I put the bike in gear and hit the start button it DOES crank, I am on the center stand and can see the rear wheel move as I crank it.


Surely it isn't supposed to do that? I thought the GPI switch was supposed to disable the starter if the bike is in gear and the clutch out.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 25, 2017, 08:58:57 PM
When I put the bike in gear and hit the start button it DOES crank, I am on the center stand and can see the rear wheel move as I crank it.
First determine if it is actually in gear or you're getting a false gear indication and wheel movement from vibration .
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 25, 2017, 11:02:10 PM
It is in gear for sure and the wheel clearly rotates about 1/4 of a turn or every time the starter motor cranks
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 26, 2017, 07:36:16 AM
This morning the battery was fully charged and still no start.   :dunno :musicboohoo:


I am out most of the day with a family event but will try and troubleshoot some more later this afternoon. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on February 26, 2017, 09:44:03 AM
Start with the basics, fuel, air, spark.  You have all those in the cylinders?  Is the fuel fresh?  Or full of water and crud?

Then compression and timing of the spark.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 26, 2017, 10:19:44 AM
The first thing that comes to mind about the starter working is the clutch interlock switch on the handlebars.  I suspect it is adjusted wrong or has moved in the mount.  It's possible but unlikely that the clutch is adjusted wrong.  Right now, I don't think it should be high on your list of priorities. 

I have done some searches and it seems the side stand switch is a weak point.  In order to remove the transmission to work on the clutch you had to at least disconnect it which could have disturbed the contacts in the connector or even the switch mount or the lever that activates it.  THE CONTACTS ON THAT SWITCH HAVE TO BE CLOSED FOR THE FUEL PUMP TO RUN.

Find the connector for the switch, you should be familiar with it since you had to disconnect it to pull the transmission.  It has two wires on it, a green and red, and a green and yellow wire.  First, try cleaning the connector with DeOxit.  If that doesn't work, put a jumper across the pins. 

If the jumper gets the fuel pump working you could have a bad side stand switch, or it could be adjusted wrong or the lever bent.  It is a sensitive, on my bike it kills the engine when the side stand is moved even a very small amount.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on February 27, 2017, 08:06:55 AM
Finally got a chance to work more on the bike this morning.  I jumped the side stand connection and it started right up! After cleaning the connections with deox it still starts with the side stand switch connected and even cuts out when I lower the side stand.


Thanks TMG - good call


Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on February 27, 2017, 09:14:08 AM
I jumped the side stand connection and it started right up!
:clap:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on February 27, 2017, 03:36:39 PM
You're very welcome!   :clap: :2thumbup:

Now get out there and get some yee-hah.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 02, 2017, 03:55:38 PM
Yesterday afternoon the clutch cable adjuster arrived to today I was able to put everything back together and go out on a test drive.


The new clutch works great! The shifts up and down are noticeably smoother and less clunky.  I can also feel a big increase in acceleration now the clutch isn't semi slipping.


So that is a spline lube and clutch change done and dusted, thank you everyone for your help.


Next step I have to work on is the brakes.  Thed sics are pretty worn but even so I have basically no front brake.  I did get some new cheapy chinese pads so I will install those and hope it helps.  Now I have the power to go fast but still stop very slowly - not a good combination  :riding: :falldown: :curvy-road :mbird

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 02, 2017, 04:28:32 PM
Next step I have to work on is the brakes.  Thed sics are pretty worn but even so I have basically no front brake. 
That reminds me. I haven't looked at my thed sics in ages.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Chaos on March 02, 2017, 05:15:39 PM
is there a link to checking thed sics?  I'm not sure early K's even had them.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 02, 2017, 05:19:25 PM
You can be a real as shole at times... :hehehe


Seriously though, the discs are kinda worn - both are less than minimum but the pads are no more than half life.  I have totally stripped and cleaned all the brake parts and bled the system to death.  There are no brake fluid leaks anywhere and yet basically the brake lever goes to the hand grip every time.  It is like it is impossible to build up any pressure in the system.  Any idea why brakes would always act that way?


Nut sure what to do next except change the pads but that is more in hope than expectation.


Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 02, 2017, 05:24:28 PM
  Any idea why brakes would always act that way?
Have you followed this procedure (https://www.motobrick.com/index.php?topic=1135.0) for bleeding them?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 02, 2017, 05:31:40 PM
Yes, exactly as stated. ABS modulator first then the caliper furthest from the master cylinder then the one closest.  I did it again today.  Straight brake fluid, not a single micro bubble of air.  :dunno


As stated much earlier in this thread the brakes came back from the powder coating totally coated, the inside of the calipers as well.  I very carefully cleaned those sides as well as using a tap on all the threads to clean them and a pick on the holes that allow fluid to pass from one side to the other.  I also removed the seals and pistons and cleaned those and lastly replaced the o-rings.  Everything seemed to go back together great and there are no leaks so why no pressure?  I haven't touched the master cylinder as yet, I guess it could be there.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 02, 2017, 05:48:36 PM
Yes, exactly as stated. ABS modulator first then the caliper furthest from the master cylinder then the one closest.  I did it again today. 
Here's a fun thread to read (http://www.motobrick.com/index.php?topic=6611.0) while you wait for Gryph.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 02, 2017, 05:54:54 PM
Nice thanks, I have tried the holding the brake lever back over night method before and it did help a little - now I will turning bars left and right as well.



Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 02, 2017, 06:25:16 PM
I finally got some lever feel doing the partial-lever-pull-over-night thing.  It seems that the more I ride the bike the better the brakes work.  I like to think I have the last of the air out.

Bought a rebuild kit for the leaky piston seal, but haven't installed it yet.  The leak isn't that bad, in fact, it may have stopped.  I have just been pulling the boot and soaking up the little bit of fluid that is in there. I am not sure I want to bleed a rebuilt master cylinder again.

My K100 no longer has ABS so the bleeding is straightforward(yeah, right).  I am so disgusted with the bleeding process after working on the system, especially with my RT, that I recently purchased a Gunson pressure bleeder and am waiting on delivery from the U.K.   Am hoping it helps make that job a little less annoying.   

I was using a vacuum pump to bleed, but it seemed that it was pulling air into the system past the seals in the master cylinder.   When I was done with the vacuum bleeder I still had to go back and bleed the air out conventionally.  The only good thing about the vacuum was that it got the old fluid out quick. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 02, 2017, 08:32:04 PM

This might or might not help. I had problems with bleeding my K75 when I first got it no amount of pressure vacuum  or manual bleeding would work. Blocking the line from the master cylinder gave me instant pressure. With a bit of detective work it turned out to be a leak in the front brake line. It appears that a small hole had developed but it was covered internally by a flap of rubber making a one way valve. The hose was sucking air in but not leaking any fluid. I think I still have the hose I kept it on the wall as a curiosity.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 02, 2017, 08:37:44 PM
I changed all my hoses to stainless ones just recently so I really hope that isn't the issue. 


I do somewhat suspect air creeping into the system somewhere though.  When I took the bike off the road to do the clutch two weeks ago the front brakes weren't great but they worked for sure.  When I took it for a ride today - or was about to - I had zero front brake and at no point in the clutch changing process did I in any way touch the front brake system.







Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 07, 2017, 08:39:33 AM
I have been bleeding and testing my brakes and also tying them up overnight as suggested.  That had been working fine, I bled them yesterday, did the left and right with the handle bars and bled them again.  After that I had a pretty good level of feel in the brake lever.  Jost to be sure I tied the handle back about half way overnight to get an remaining air to the top.  This morning I took the tie down off and tested the lever.  Straight to the bar with zero pressure at all.  Overnight the brakes have gone to worse than ever.  There is no leak anywhere so I am thinking maybe the master cylinder needs a rebuild?  I bled the brakes and got some feel back but not much.  Any suggestions?



Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 07, 2017, 09:06:42 AM
Nah they were out at my rinky dink Costa Rican car parts store so I am using old fashioned Dot 4...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 07, 2017, 09:10:49 AM
I ordered a master cylinder rebuild kit from Motobins - $55 inc shipping as compared to $93 before shipping with MaxBMW, I figured at that price it would be crazy not to get it. 


At least Brexit is good for one thing!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 08, 2017, 12:00:59 PM
I got the first of my two new mirrors yesterday and have been trying to install it today.  I know there is a trick to getting the mirror out but is there one to getting it in? I have pushed and heaved and done everything I can but the mirror is still maybe 1 or 2 mm short of being in enough ti be able to slip the mirror clamp on at the other side. I think that is how I lost the old one so really want to try and get the clamp installed properly
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 08, 2017, 12:33:52 PM
Any suggestions?
While you're waiting for your rebuild kit, loosen then retighten snuggly all your hose connections then bleed the system again.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 08, 2017, 02:08:27 PM

You might want to fit leashes on your mirrors, would stop them wandering too far.. Fishing line tracer would do the trick.
Regards Martin

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 08, 2017, 02:13:05 PM
I have leashes on the whole mirror housing but can't work see how I could also add them to the glass on its own.  Last time the housing stayed on the bike but the glass came off by.  That is whyI thinkmaybe I didn't have the clamp on right, but despite my best efforts I cannot get the clamp on now either.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 08, 2017, 04:05:30 PM
That is whyI thinkmaybe I didn't have the clamp on right, but despite my best efforts I cannot get the clamp on now either.
I'm uncertain what kind of gyrations and incantations you're involved in with this process because my bike is less complex; however, try this post on for size (https://forums.bmwmoa.org/showthread.php?37948-K100RS-mirror-glass&p=479694&viewfull=1#post479694) and read the others surrounding it. Maybe there will be something useful.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 08, 2017, 04:17:36 PM
Thanks, I have worked out a method of tethering just the glass separately to the rest of the pod so I am going to try that and not worry about it too much
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 09, 2017, 03:45:15 PM
Laitch, the RS mirrors have a different attachment for the glass from the RT/LT mirrors.

I just went through my inventory of spare RS mirror pods and made a startling(to me) discovery.  It seems that there is two ways to attach the mirror glass.  On the new style pods, there is that nasty wire thingy you have to stick through the pod behind the reflector to clamp the mirror glass into the pod.

On my older(?) pods there is a built in spring wire that does the same job as that friggin' wire thingy.  If you look down in the hole carefully you will see two wires that will clamp the glass in place.  In order to get the glass into the clamp, you will need to push pretty hard on the center of the glass right where the post is.  If you don't push there you will be cruising eBay for a new mirror.  (No need to ask how I found that out.) 

It seems those sneaky guys at Motorad changed the pod where the glass connects when they went to the 4 valve models.  It is possible that you are trying to use that wire thingy with the old style pod.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 09, 2017, 03:54:11 PM
You could well be right.  I tried installing the new mirror in the other pod and had no problem.  Both the pods I have on the bike are new to me, one came with the fairing and the other from ebay.  So it could be they are different and the one I am having trouble with simply doesn't need the mirror glass clamp thingy (that is a technical term).  Either way I am going to tether the mirror glass itself with fishing line since the glass is becoming hard to find and I don't want to keep losing them!
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 09, 2017, 04:31:37 PM
I hear you on losing mirrors. 

Maybe we need to reevaluate our stand on doing frappichino conversions to RS bricks in order to release more mirror parts on to the market.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 09, 2017, 06:46:31 PM
Maybe we need to reevaluate our stand on doing frappichino conversions to RS bricks in order to release more mirror parts on to the market.
I support that view. It will also make more parts bikes available at lower cost.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 09, 2017, 07:04:16 PM
Well that makes it official - we need to promote the cafe conversions of bricks so the rest of us can keep our stock ones in nice shiny plastic bits etc
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 10, 2017, 01:34:43 PM
I stripped and cleaned the front master cylinder today - it wasn't even dirty and had no crud on it.  The seals were perfect.


I also loosened and refastened every connection for the whole front brake system and re-bled the brakes. 


Still nothing - lever goes straight to grip with zero pressure.


The only thing I can thank is that there is a big air bubble stuck somewhere in the system.  So tomorrow I am going to take the calipers off the bike and strip them as well and start again from scratch with fresh brake fluid etc as well.


It is a head scratcher because with no leak there HAS to be pressure if there is no air in the system.  That is why, even though I get no air when I bleed the brakes, I am thinking there is some somewhere.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 10, 2017, 02:45:04 PM

If you still have it put your old hose back on the one closest to the M/Cyl . Then bleed out the air in the M/Cyl and hose, and using a line clamp or multi grips with pads clamp of your old hose as close to the M/Cyl as possible. This will show you whether the trouble is in the M/Cyl or in elsewhere. You can do this with the hose you already have on but it is possible to damage the line by doing this, so it is better to use the old one.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 10, 2017, 02:47:36 PM
I get you, the idea being that if the lever still goes straight to the grip when the line is clamped close to the M/C the M/C is somehow damaged and if not then the issue is somewhere else?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 10, 2017, 03:27:12 PM
1a) Yes
1b) Yes
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 10, 2017, 03:47:13 PM

 :2thumbup: You got it, that was how I found that I had a one way leak in the hose. This will narrow down your search possibly. :dunno
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 10, 2017, 03:53:07 PM
I don't have an old hose but what I do have is an old banjo bolt so I plan to fill the hole with some wire, then solder over the top to effectively turn it into a solid bolt then install that at the M/C.


Johnny I will try that as well, need to get myself some more DOT 4 first.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 10, 2017, 05:42:57 PM
I took Johnny's advice, though I realised before I started that 26 pumps was woefully inadequate and that what was clearly needed was 27 pumps - the cube of three which is of course the exact number of letters to be found in BMW...


So 27 pumps and a good few burbs of air from my 'bled' brakes that would have made an unweaned baby proud it worked and I now have a nice stiff lever - funny that pumping lots made it stiff...[size=78%] [/size] :nono


Haven't had a chance to do a test drive yet but it feels ten times better than at any time since I have had the bike to date.


Thanks Johnny  :yes


27 rules!!









Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 10, 2017, 07:12:12 PM
27 pumps - the cube of three which is of course the exact number of letters to be found in BMW...
27 rules!!
Numerology uber alles!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 10, 2017, 07:51:45 PM
Not really, I assume air in the system which just never got bled out before because I was doing 4-5 bubble free pumps and calling it done when more were needed.


Live and learn - I was a total novice when I got the bike so things like that take experience I guess.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 11, 2017, 01:47:16 PM
Hoarder? Me??? Well maybe a little


I was contacted by one of the only other two Brick owners in CR earlier this week.  He has a K1100 LT he is turning into a cafe racer.


So...


For $75 I picked up all the stuff in the photo!


Do I need it - hmm not really but $75!


Gen 3 cases with locks, 35 lt top box, rear cowl, Corbin seat (that seat has me intrigued - it looks like it mounts like a regular seal but is formed to be a low seat, anyone heard of that?)


I also got mud flap extensions for both the front and rear parts of the rear mud guard!


First issue is I can't work out how to take the top box off the mount, can someone tell me please? (edit - nevermind I worked it out)


Now it seems I need to buy the mounting bracket - one arm is busted - though a fiber glass repair might be possible I guess.


Oh and best of all - the six locks on the Gen 3 cases - they open with my existing ignition key!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on March 11, 2017, 02:13:22 PM
Well worth $75


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 11, 2017, 02:24:17 PM

 :2thumbup:  Score and a half one side cover is worth that in OZ you've got over a grands worth.
Regards a jealous Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 11, 2017, 02:45:38 PM
Wow!  Easily a grand, maybe more.  Stuff looks to be in very good nick.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 11, 2017, 02:55:11 PM
Yeah pretty good as far as I can see.  Any thoughts on that seat?  Compared t the corbin the bike came with it is a different shape, I am just not sure if the driver is lower or just the passenger higher...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 11, 2017, 03:02:01 PM

Try it on your bike takes about two minutes to swap, you just pull out the little "C" clips on the hinges.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 11, 2017, 03:26:11 PM
It seems like it is maybe half an inch to an inch taller than my low seat.  So it mainly comes to down to looks and which my wife finds more comfortable

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Title: Re: K100RS parked for four months outside in all weathers
Post by: jimboknowsit on March 12, 2017, 09:28:15 AM
I have been bleeding and testing my brakes and also tying them up overnight as suggested.  That had been working fine, I bled them yesterday, did the left and right with the handle bars and bled them again.  After that I had a pretty good level of feel in the brake lever.  Jost to be sure I tied the handle back about half way overnight to get an remaining air to the top.  This morning I took the tie down off and tested the lever.  Straight to the bar with zero pressure at all.  Overnight the brakes have gone to worse than ever.  There is no leak anywhere so I am thinking maybe the master cylinder needs a rebuild?  I bled the brakes and got some feel back but not much.  Any suggestions?
I have a 1994 K1100rs that sat up for 5 years or so. I had the same problem. I ended up replacing the front and rear master cylinder,purging the ABS module and replacing the brakes lines. Brake lines were first.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 12, 2017, 10:39:16 AM
I did manage to fix the brakes, thanks to help from Johnny and others. 


When tieing the lever back overnight it seems tieing it all the way back against the grip is NOT good.  That forced the MC piston out too far.  So I have to remove, clean and reinstall the piston then bleed and bleed and bleed only pulling lever 1/2 way back until I was blue in the face - I think I put four MC's full of fluid through the system starting at the ABS then doing LHS then RHS of the calipers.


That did eventually get me some pressure back on the lever and when I test rode it yesterday I had proper brakes for the first time since getting the bike. 


I celebrated by playing on some twisties!  :riding:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 12, 2017, 12:14:13 PM
When tieing the lever back overnight it seems tieing it all the way back against the grip is NOT good. 
Did you realize wrenchers were warned 2.5 times in the posts to not go pass the halfway point when bleeding that brake system? Were you exploring the limits? :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 12, 2017, 01:09:26 PM
It was actually tied back only half way when when it gave out.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 12, 2017, 02:51:54 PM
I swapped all six locks out of the new set of luggage so I now have the ignition key and six luggage keys that match.


Sadly I still have one key for the fuel cap, one for the 22 lt top box, no key at all for the seat lock and a keyless lock for the 35 lt top box...


Are the basic lock and key combos all identical or are they slightly different for example for the seat lock and the fuel cap?


I'd really like to end up with one single key for the whole bike if possible. I plan to visit a locksmith tomorrow to see if he can help with me most of the locks but am not sure about the seat lock
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 12, 2017, 04:00:28 PM
This may help.  I did this to my bikes to make all the luggage work on it's bike's ignition key.

http://www.k100.biz/pdf/FAQ/FAQ_K100_tips.pdf#%5B%7B%22num%22%3A1294%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22XYZ%22%7D%2C0%2C976%2Cnull%5D

If you do a search on the net I think there is a description of the process with some good photos.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 12, 2017, 10:51:41 PM
I'd really like to end up with one single key for the whole bike if possible. I plan to visit a locksmith tomorrow to see if he can help with me most of the locks but am not sure about the seat lock
Here's a MOTOBRICK.COM epic thread (http://www.motobrick.com/index.php/topic,494.0.html) concerning this subject.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 13, 2017, 01:59:08 PM
Thanks, I had been using that thread a lot when I swapped out all the locks form the new cases I got to the old ones.  Well today I kept using it and so now my ignition key opens everything!  All I am missing is a lock for the seat lock.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 13, 2017, 02:36:07 PM

I would but


No lock in seat lock to wiggle...
Title: Re: K100RS parked for four months outside in all weathers
Post by: mw074 on March 13, 2017, 02:44:50 PM
All of the lock cylinders on the bike can be re-coded the same as the ignition key. However, you mentioned changing to a standard seat set-up. The seat lock assemblies are not the same as the low seat.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 20, 2017, 11:42:48 AM
I have been prepping a 35 lt top box for paining and have come across an issue that is starting to bug me...


The case came with four holes in the lid, I guess the PO had a luggage rack on top at some point.  They had been filled with silicon (sic!)


I dug out the old silicon, plastic welded the holes on the inside and have filled them to try and get them smooth for paint.


Now the issue.  Four or maybe even five times now I have put filler on the holes, left it to go dry and sanded with either 280 or 400 wet n dry paper using a sanding block.


Every single time I end up with a indent where the holes were.  I am not sure why...


I am using a bondo type filler that I have to add the chemical hardener to just before using it.


I can obviously just keep on trying but as this is the first time I have ever done anything like this I thought I would see if I am missing an easy trick or something...



Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on March 20, 2017, 01:15:55 PM
"Shrinkage" is your problem.As the bondo goes off it shrinks.Your meant to put on proud and then sand back flush after its gone off.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 20, 2017, 01:20:09 PM
I am putting it on proud - hugely proud.  Oh well the holes are quite deep and very small so hopefully they will get filled up sooner or later. I imagine the pressure of sanding is pushing the bondo deeper into the hole to fill any bits that weren't filled before, that has to stop eventually...

Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on March 20, 2017, 01:43:23 PM
Nothing's as simple as it seems.A second smear of filler will do it.Er,the filler needs to have set before you fiddle with it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 20, 2017, 02:08:32 PM
How long are you waiting before sanding?  How old is the catalyst? 

Put on the thinnest layer that fills the indentation with just a millimeter more.  An easy way to do it is to put a couple layers of masking tape around the hole and use the tape as grounds to run your spreader on.  Your Bondo layer will stand proud by the thickness of the tape. 

Let it cure overnight before sanding.  I am assuming you are using a block
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 20, 2017, 03:15:42 PM
Yes I am using a block.  So far I have let it dry for six hours, overnight, six hours and overnight again.


I hope the catalyst is new, that is to say I brought it on Friday so it should be.


I will try again tomorrow morning and see how it goes


Thanks for the tips




Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 20, 2017, 05:31:53 PM
Patches created.


Now I just wait for the morning...


If they look ok then it is primer and paint - rattle can and my first attempt so fingers crossed it turns out ok.


I am thinking two coats of primer then knock it back with 600 grit wet and dry then paint, probably fours coats.


As I said this is my first attempt at any kind of painting so I am learning tons as I go.  I figured a 35 lt top case is a good thing to practice on since Johnny will berate me the moment I fit it anyway!  Add to that I will normally use the 'iconic' 22 and so if it turns out rubbish I can just shrug and try again.


(Edit) looking at the pic makes me think that maybe bright 34 C sunlight might not have been the best place to do that... :dunno2:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 21, 2017, 01:10:14 PM
wow!  What are you using for a spreader?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 21, 2017, 01:17:00 PM
A 1 inch spatula - that last mix was super hot though, it is hard not not make it very hot when trying to do a very small batch so as not to waste it.


Anyway I sanded this morning and three of four holes seem to be dealt with.  One remains, so I will try again tomorrow after the primer has dried overnight.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 21, 2017, 02:56:50 PM
Get some plastic spreaders made for filler from an auto body supply shop.  Ask for a couple when you buy a can of paint or filler.  They'll give you a couple for free, otherwise they might cost you 50 cents.  They have boxes of them under the counter just like the stirring sticks for the paint.

A square gallon jug like milk comes in can be cut into 4"x4" squares for mixing the Bondo on.  Take a rounded tablespoon of sand.  Dump it and look at it.  That is about the size of a lump of Bondo that I mix at one time for filling holes and surface defects.  Mix that with a 1/4" wide by 3/8" to 1/2"  long bead of catalyst.  Mix well for 15-20 seconds with a popsicle stick and take a bit on the blade of the spreader.  Spread once in one direction, followed by one pass in the opposite direction.  Press down onto the tape, but not enough to noticeably bend the spreader.   If you have done everything right you will have left a nice thin layer of Bondo with a smooth, level surface.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 26, 2017, 05:25:13 PM
Sadly the bike failed me today.


I went down to the beach with my wife yesterday and got there no problem.


This morning we set off home and I noticed the battery felt a little flat when I started the bike.


We set off and about 20 miles from home the engine died.  When I tried to restart the battery was flat.  My assumption was an alternator failure.


We got a tow truck home and I plugged the bike up to a battery charger, after three hours on the charge she started right up, so for me that confirms the alternator issue.


Time to read the lieberry and learn about alternators!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 26, 2017, 05:46:46 PM
. . .  after three hours on the charge she started right up, so for me that confirms the alternator issue.
How old is the battery? Are you certain you don't have a circuit that is draining the battery?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 26, 2017, 05:49:11 PM
Battery is brand new.  I am not 100% certain there isn't a drain but why would the battery go flat after 40 miles of 4-5k revs unless the alternator wasn't charging?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 26, 2017, 05:57:17 PM
. . .  why would the battery go flat after 40 miles of 4-5k revs unless the alternator wasn't charging?
It would go flat if it was an old battery unable to hold a charge; that is why the question was asked.

Good luck.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 26, 2017, 06:04:18 PM
Is the alternator light in the instrument cluster working?  If the alternator isn't charging the battery, that light should be coming on.   

If you have a meter, start the bike and measure the voltage on the battery terminals.  It should be about 13.8v when the engine is running and the alternator is charging. 

Check the alternator for a loose B+ connection.  If it is loose and you are lucky, the loose connection will keep the battery from being charged.  If it is loose and you are not lucky, you may have blown the diodes in the alternator. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 26, 2017, 06:10:00 PM
I don't think that is the problem.  The battery is maybe three months old.  Next week I plan to start trouble shooting the issue. To be honest I am glad it seems to be something relatively simple in that with a charged battery the bike starts and runs fine.  If I had got it home and charged the battery and she still didn't start then I would have been worried.  I have only just got home so I haven't had time to research the sire on alternator issues and how to fix them so I will do that first then update the thread.  The good news is that the ride down and back until the bike crapped out on me was great and my wife was loving it. Our Sena 20S intercoms worked a treat and she felt safe and comfortable - apart from a  slight sliding forward on the seat issue which I may try to fix with higher pegs as per a recent thread on here.  The bike felt very solid and stable at 80 mph + two up with luggage and apart from wanting to heat shield my thighs from the toaster oven I have no issues to report - until the bike died of course!  There is a slight roughness in the engine in the 3500 rpm range but that might be normal since it seems to go away over 4k and over 5000 or so I need to shift because it gets to 'bucking bronco' for my wife who is new to riding, she finds the engine braking when you go off throttle a bit much for now - she will get used to it with time I am sure.  The good news is that she is very comfortable with decent lean angles  - it is more hard braking and acceleration she doesn't like, but that might hark back to the slight seat issue.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 26, 2017, 06:13:23 PM
The alternator light did NOT come on until the engine was about to die.  My first indication of a problem was the ABS warning coming on and maybe three minutes later when I down shifted and accelerated the engine was unresponsive, 30 seconds later it died. When I tried to restart it I got the click of a flat battery
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 26, 2017, 06:20:43 PM
It would also go flat if you battery terminal connection and/or ground connection weren't clean and tight.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 26, 2017, 06:21:26 PM
I disconnected the charger - the battery isn't fully charged yet but has enough to start the bike.


With the bike running- but not up to temp yet - I am only getting 12.25 volts at the battery terminals
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 26, 2017, 06:24:07 PM
Then there is this post (http://www.motobrick.com/index.php/topic,7600.msg53139.html#msg53139).
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 26, 2017, 06:36:29 PM
I hadn't had it on a tender for a couple of weeks, I have been riding every two or three days and the battery always felt fine. 


When we set off to the beach the battery felt fine, it was only this morning when I started her up to come back that the battery felt a little sluggish.


I have done 100 mile plus rides a few times with no issues so far, this feels like a new issue to me.


The last time I did put it on the tender the battery said it was fully charged after, I think, about four hours on the tender.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 26, 2017, 08:36:27 PM
. . .  this feels like a new issue to me.
It was a new issue for the rider who wrote the post in that link, too.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 26, 2017, 08:42:26 PM
What I meant is that I have not felt the battery getting weaker over successive days.


Tomorrow when the battery is fully charged I will see the output when the bike is running, check all the connections and then see where I am.


I really hope it is as simple as a loose connection, all I am saying is it doesn't feel like that is the issue.


I am pretty sure it is the alternator but will go through all the trouble shooting procedures to eliminate the other possibilities before saying that for certain.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 26, 2017, 11:59:32 PM
Is the alternator light on when you are reading 12.25V on the battery terminals?

If you are only seeing 12.25V when the engine is running you have a charging problem with the alternator.  The low output of the alternator and the resulting draining of the battery is what triggered the ABS fault, which is probably for low voltage to the ABS computer.

The fastest way to get to the bottom of things is to pull the alternator and get it to an automotive electrical shop.  It will take them less than 5 minutes to test your alternator and tell you if it is good or tell you what the problem is.  If there is a problem, they can give you an estimate of how long and how much to fix it. 

When you have the alternator out you can also check the drive dog.  I had a problem with the charging system on my RT that turned out to be caused by the drive dog's splines stripping out.  This resulted in the dog slipping on it's drive shaft and when the alternator was under load the dog slipped and didn't turn the alternator fast enough to get any output.  It's a weird problem, and I have never heard of anyone else having it, but it's something to check while the alternator is out.  Just grab the dog and see if you can turn it.  If you can, it's stripped and probably needs to be replaced.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 27, 2017, 12:38:04 PM
Now the battery has charged over night I am getting 12.6 volts at the battery terminals with the bike running on idle, but the moment I rev the engine at all, say 2000 revs I am getting 14.20 V. This morning I checked and all the connections are all clean and tight.  The only thing that might maybe have been a little loose is the actual connection into the alternator itself.  Certainly when I pressed on it it went in further by maybe 1/4 of an inch.

I am going to hope that was it and keep riding the bike, though short distances only for now while I see if the problem reoccurs.

Oh and no the battery light never came on at any point, but the bulb does work because it lights up before starting the engine.

Thanks for all the tips and fingers crossed it was just that slightly loose connection.





Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 27, 2017, 01:53:40 PM
Ummm... A 1/4"?  I'm gonna guess you found your problem.  Weren't you in there recently with some clutch or transmission work?  Probably knocked it loose when you were in there.

Let's hope that you didn't pop the diodes.   Sounds like they should still be good if you were able to get 14,2v coming out.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 27, 2017, 02:32:47 PM
Yep could be.  I will keep an eye on the battery and see how things go
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on March 27, 2017, 05:58:40 PM
Yep cold be.  I will keep an eye on the battery and see how things go
Best method.
Some hints:when you connect your fully charged battery to the bike's electrical system( with all known things switched off)how much of an arc occurs as you brush the wire terminal against the battery post?If it's more than a digital clocks worth then...find it.
The battery contains many starts with no discernible difference in feel until when on a,possibly,cold morning she failed to crank.If there is any energy left in the battery a push start should be possible and with no lights and minimal amount of horn use you can go some way toward home.
Did you try push starting it?Does your bike exclude any of that through interlocks?
It's my go to start method with any sniff of battery voltage drop on my86 brick.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 27, 2017, 06:35:30 PM
I didn't try to push start it no, we came to a halt on an up slope on a busy two lane highway with trucks roaring past - the idea of turning it round and going downhill against the traffic didn't appeal!


In fact the engine died completely as we coasted to a stop, so I am not sure it would have started anyway.


I am pretty sure the engine had been running on the battery.


The load shed does kill most stuff when I crank it but I cannot turn off the headlights when the engine is running.


I took it for a spin today and I do think there is something up with the alternator.  I only did a 15 mile trip so had no worries getting home but when I did I checked the voltage and at idle it was only kicking out 12.2 V. Later when my son is home I will try again when he can help me by revving the throttle as I have the probes on the battery connections.


Maybe there is something loose in there?  The road up to my house is a badly rutted concrete road and does jolt things around a heck of a lot.


Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 27, 2017, 07:46:35 PM
OK now I am getting confused (not unusual I know)


When I cranked it when cold I am getting 12.7 V on idle and 14.2 V when revved to 3000.


So can anything about a hot/warm engine cause the alternator to produce less voltage?


Maybe I should try and find and install an aftermarket volt meter so I can monitor real time.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 27, 2017, 08:33:29 PM
Do you get a noticeable increase in the brightness of the headlight when you rev the engine above idle?

How much do you have to increase the rpm before you can see the brightness increase? 

What is the voltage at that rpm?

At what rpm can you read 13.8v on the meter? 

You need to get some test leads with alligator clips on them so you can leave your probes connected to the battery while you do things like work the throttle.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 11:37:07 AM
Today I hooked up some alligator clips and made a coupe of videos as I did my trouble shooting.


It is very odd.


I made four videos, which unless you are really bored I wouldn't suggest you watch...


However to summarise


When the bike is totally cold (video 1) I get a low reading when on idle but fine when revved up a little


Video 2 is as the bike is starting to warm up and shows the light bulb dimming slightly on idle


Video 3 is the bike up to temp (ie no choke) but still cold.  That shows a perfect alternator and tons of voltage.


Video 4 is where it gettings interesting.  I left the bike idling for maybe 15 minutes, by then the temp needle is in the middle or slightly above.  I noticed the idle started to waver a little and took another video.  All of a sudden the battery light is flickering on at idle and ever when revved most of the time there is almost no voltage (12.2 or so) with occasioanl bursts of normal output (14 v)


Has anyone seen anything like this before?


As a side note my fan does NOT come on automatically as the bike heats up.  It did the very first time I installed the new loom but very shortly afterwards stopped again - I installed a manual switch so I can turn it on when I need to.


Here are the videos


https://www.youtube.com/watch?v=PpZahRhyILo (https://www.youtube.com/watch?v=PpZahRhyILo)


https://www.youtube.com/watch?v=bAhfaNr2Qlg (https://www.youtube.com/watch?v=bAhfaNr2Qlg)


https://www.youtube.com/watch?v=qUBSNYzhTbs (https://www.youtube.com/watch?v=qUBSNYzhTbs)


https://www.youtube.com/watch?v=1p6cE8oXNMg (https://www.youtube.com/watch?v=1p6cE8oXNMg)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 11:49:17 AM
It had been running since I started it in video 1 - I revved it some - not 4,000 but certainly 3,000.  I am doing all this because the battery ran flat on Sunday when I was coming back from the beach having been sitting at between 3,000 and 6,000 for nearly an hour.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 12:25:42 PM
I decided to 'excite the charging circuit' as per Johnny and noticed something weird


With a totally still throttle hand the revs vary wildly when the bike is at normal operating temp - or at least about half way up the gauge.


https://www.youtube.com/watch?v=Mj9kCnOEuyg (https://www.youtube.com/watch?v=Mj9kCnOEuyg)


https://www.youtube.com/watch?v=I7LfaLRqi0Y (https://www.youtube.com/watch?v=I7LfaLRqi0Y)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 01:12:01 PM
For 80 miles at least until my battery dies again..
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 28, 2017, 01:44:11 PM

Rectifier in the alternator stuffed and overcharged and stuffed the battery. Overcharging the battery can cause the battery to overheat and explode resulting in battery acid everywhere. Get the alternator repaired or replaced along with a new battery.
Regards Martin..

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 01:51:44 PM
Thanks Martin, question, is that what is causing the variation in revs as well?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 28, 2017, 02:09:59 PM

Probably, the maximum it should be charging is 14.5v yours goes up to 17 + v which puts more load on the alternator which reduces revs. If you feel the side of the battery it should be hot due to the overcharging, but I wouldn't run it until I got it repaired or replaced. I've had a battery blow out, it is not good unless you have access to lots of water and a doctor. :nono It might be possible to just replace the rectifier in your alternator plenty of information on doing this on the net.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 28, 2017, 04:02:22 PM
+1 on what Martin said.  If you recall, when you had the loose connector I mentioned you might be lucky and didn't pop the diodes.  I am guessing that you possibly didn't completely blow them, but they look to be damaged as well as the voltage regulator. 

How long had the engine been running when things started acting strange?  Was the alternator getting warm?  As I suggested in an earlier post you should get the alternator out and to an automotive electrical shop for testing, although because the problem appears to be heat related they will have a hard time replicating your problem. 

Right now, if it were me, I would just get the brushes, regulator and diodes replaced.  If I am not mistaken, they are all in a single unit in these alternators.  Trying to run with things as they are will just wreck the rest of the electrical stuff including among other things the AB$ brain, engine control unit and the hall effect $en$or$.

http://www.ebay.com/itm/Internal-Voltage-Regulator-BMW-K-12-31-1-459-286-EnDuraLast-BOALT-REG286A-/371904380730?fits=Make%3ABMW%7CModel%3AK100RS&hash=item56973a7f3a:g:mIkAAOSwo4pYXWnF&vxp=mtr (http://www.ebay.com/itm/Internal-Voltage-Regulator-BMW-K-12-31-1-459-286-EnDuraLast-BOALT-REG286A-/371904380730?fits=Make%3ABMW%7CModel%3AK100RS&hash=item56973a7f3a:g:mIkAAOSwo4pYXWnF&vxp=mtr)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Revrdmark on March 28, 2017, 04:12:51 PM
Martin beat me to it. Since the bricks have altinator they have a rectifier in them ( rather than a stator and separate regulator/rectifier like most motorcycles ) and it sounds like the rectifier is malfunctioning making voltage bounce around and the battery either absorbs or discharges the excess or debt which is rough on batteries. I had a similar thing happen in a old Mercedes  that  very nearly blew the battery from excess heat and the revs were all over from inconsistent voltage


Sent from my iPhone using Tapatalk
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 04:40:58 PM
Ok thanks. I will pull the alternator and see if I can get it repaired here but I am pretty sure it will be quicker and cheaper to buy a used one.  Fingers crossed the battery is ok. At $300 by the time I get it here I don't madly want to replace it

Sent from my SM-G935F using Tapatalk

Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on March 28, 2017, 04:52:37 PM
The brushes and diodes can be replaced as a unit with the alternator in place.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 28, 2017, 05:07:20 PM

Check for bulging on the sides of the battery if you detect bulging battery more than likely cactus. You might want to cross more than your fingers with the voltages you have pumped into your battery. Never know your luck in the big city, keep us informed.  :popcorm
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 28, 2017, 05:14:41 PM
It's true that you can do the job in place, but much safer to test operation before and after the repair to make sure the problem is corrected before exposing the bike's electronics to possible high voltage spikes.   Judging from the engine speed instability, the Motronic unit wasn't real happy with the high and varying voltage coming from the alternator.


Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 05:49:11 PM
I have pulled the alternator out.


The good news is that there is no visible bulging on the battery so my fingers remained crossed that it is ok.  It is lso showing 12.80 V right now, I will keep an eye on it.


In the photo of the alternator what is supposed to plug into the single spade? There was nothing there and judging by the state of the spade there hasn't been for a long time.


Also a picture of the famous monkey nutz - I have no idea what a good monkey nut looks like so opinions are welcome.


Lastly the alternator came out very easily - I have sneaking suspicion getting it back in and lined up with the nutz might be another story!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on March 28, 2017, 05:56:33 PM

Not to be too personal but your nutz look good. Long bolts with the heads cut off help when replacing the alternator, and a dab of rubber or heavy silicone grease can help to keep your nuts located.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 06:00:16 PM
Great thanks
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on March 28, 2017, 07:21:38 PM
+1 on the monkey knutz being in good shape.   

I don't know what that other terminal is for, but since everything worked in the past and the electrical drawings only show two wires connected to the alternator, the chances are pretty good that it isn't needed.

Looking forward to hearing what the alternator test finds.   
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on March 28, 2017, 07:35:48 PM
Looking in Clymer that terminal is left empty in their photo as well so I am going to ignore it!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on March 28, 2017, 08:09:43 PM
. . . and a dab of rubber or heavy silicone grease can help to keep your nuts located.
Regards Martin.
Doesn't look like he's dislocated his nuts yet but his continuing obsession with this problem might bring that about. :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 07, 2017, 03:31:18 PM
I got a new (to me) progressive rear shock today - thanks JC55 - does anyone know how to adjust the preload when you do not have the wrench?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 07, 2017, 05:07:43 PM
. . . does anyone know how to adjust the preload when you do not have the wrench?
It's a 412, right? You can see what you need to do. You put the bike on the center stand to get the rear wheel off the ground then imitate a wrench by grabbing the adjuster ring with a leather glove and rotating it with eye-popping force and a primal grunt. You could rotate it within the padded jaws of a long-handled water pump plier. You could smack it with a screwdriver and mallet but that would bite the edge. You could trace the perimeter and have an imitation cut from plate steel with a torch and using an illustration of the wrench to locate the position of the tooth. You could use the one in your tool kit that you use to measure your transmission fluid, if it's still there, if you have a tool kit.

Many options beneath the tropical sun.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on April 07, 2017, 05:14:46 PM

Or buy an adjustable "C" spanner from a tool shop.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 07, 2017, 05:20:32 PM
Me? An original tool kit?? Nope that is long gone, a replacement is on my Christmas list but at $190 Santa had better be feeling pretty generous.


Until then I will try some of the other methods, thanks.


I am putting on a short person 412 - 13.2 inches.  I am looking forward to seeing the difference, coming off is what I am pretty sure is the original Showa B007 which is totally shot, I lose traction a number of times as the rear wheel bounces on the way up my hill.


Meanwhile the alternator has been in the shop for over a week and they haven t even told me if they can fix it yet.  Precious dry season days are being wasted, the rainy season typically starts after Easter  :musicboohoo:


Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on April 07, 2017, 05:23:38 PM
Ebay "C" spanners start at $7.00 non adjustable $10.00 adjustable.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 07, 2017, 06:00:40 PM
Ebay "C" spanners start at $7.00 non adjustable $10.00 adjustable.
Good call, Martin. I was a little too third world in my thinking.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 07, 2017, 06:42:58 PM
I lose traction a number of times as the rear wheel bounces on the way up my hill.
Which gear are you typically using when you're bouncing?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 07, 2017, 06:49:33 PM
Either first or second - it is a very steep hill in parts and the road surface is so bad that over about 20 mph is tough  So on the really steep bits I am in 1st at 3000 revs and on the flatter bits 2nd at 2000 or so.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 07, 2017, 06:52:30 PM
Downhill must be a clench. What's the elevation?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 07, 2017, 07:00:28 PM
Not that high, about 1000m above sea level and yes down hill is fun - especially two up - when my brakes were on the fritz I used to go down super slowly.  Now they are better I feel a bit more confident but since it is also narrow and a dead end road people coming up in cars tend to use both sides of the road so I take it carefully.  The driveway to my house is the worst bit though, it does a 180 degree  turn and gains 3 meters in height over 12 meters - I will go up that two up but down - not yet, I make the missus get on once I have gone round that bend...


* 20170407_165611-1008x756.jpg (121.53 kB . 768x576 - viewed 304 times)


Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 07, 2017, 07:16:15 PM
Not that high, about 1000m above sea level and yes down hill is fun - especially two up - when my brakes were on the fritz I used to go down super slowly. 
The Vermont Driver's Manual thirty years ago had a statement that I thought was quintessentially pithy, having come up from Miami where aggressive driving and road rage were performance art in 1980. In its opening paragraph it stated, Sometimes, five miles an hour is too fast.

Tourists don't believe that until they hear it when being pulled from a snowbank. :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 11, 2017, 12:49:21 PM
I installed my new rear shock today.  It is MUCH shorter than the original, so much so I can now flat foot both feet while sitting on the bike - not bad for only 5 ft 6.


The problem, however, is that I now cannot get the bike on the center stand anymore.  I did finally manage to but only by building a ramp to raise the rear wheel a couple of inches more so I could get the center stand further down and get more leverage on it.


I think I am going to stick with it anyway. I can keep a ramp at home for getting it on the center stand and use the side stand when I am out and about.   I know that might lead to smoky brick syndrome a bit but honestly the bike is now so low that the side stand angle is a lot less than normal (though still enough to feel safe).


I have not been able to test ride it yet, I am still waiting for the alternator to be fixed, which will be next week at the earliest now since it is Semana Santa this week (Easter) and the whole country closes down for the week.





Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on April 11, 2017, 02:25:47 PM

You could remove the centre stand and cut it down and sleeve it. It would give you something to do over Semana Santa.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 11, 2017, 06:14:25 PM
I do not really want to do that - perhaps crazily I think of future non tiny owners who might put a normal shock back on and therefore not be able to use the center stand if it is cut down...


Before I make any long term decisions I need to ride it, I am worried it is going to bottom out a lot going up and down my hill.


Time will tell.


Meanwhile here are a couple of photos


* 20170411_160557-1008x756.jpg (70.27 kB . 768x576 - viewed 280 times)

* 20170411_160607-756x1008.jpg (38.13 kB . 432x576 - viewed 314 times)

* 20170411_161105-756x1008.jpg (40.18 kB . 432x576 - viewed 316 times)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on April 12, 2017, 02:50:25 AM

If you were in the US you could probably pick up a spare stand cheap off one of the Café builders. Probably not much of a chance where you are.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 12, 2017, 05:51:30 PM
It is a progressive suspension 1371 245/340
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 13, 2017, 08:14:53 AM
Progressive 412-4016B 13.2 inches
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 10:18:37 AM
I'm wondering that if you lowered the triple tree on the fork tubes by the same .75" or so that the rear was lowered by the replacement shock—a task that is recommended generally when lowering the rear—you'd unload some weight on the rear and gain some distance to develop momentum that would help you when you attempt to lift the bike onto the stand.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on April 13, 2017, 10:30:09 AM
Lowering the front will improve the handling with the lower rear end, but it will lower the center of gravity another 3/8" making it that much harder to get the bike up on the center stand.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 10:38:49 AM
Lowering the front will improve the handling with the lower rear end, but it will lower the center of gravity another 3/8" making it that much harder to get the bike up on the center stand.
It's worth a try, not that I don't appreciate your negativity, Gryph.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 13, 2017, 10:44:03 AM
I had already lowered the front a little but was thinking to do it some more to match the lowered rear end.  I was planning to do a test ride first though, the new rear shock has lowered the rear over an inch, maybe more.  I am concerned it might bottom out on my hill so before going to far I want to ride it. It will be next week before I can ride it though with the alternator situation.


When I have used my ramp and put the bike on the center stand the rear tyre is 3 inches off the ground. I am worried that shock was built with a monolever set up in  mind, not a paralever like mine and it might be too much of a height lowering.


Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 10:46:27 AM
It will be next week before I can ride it though with the alternator situation.
Did you get a method to adjust it? You were seeking one.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 13, 2017, 10:52:58 AM
Nope, it was set on the highest preload - I managed to knock it down one notch bot no  more.  As soon as life returns to normal here I will find a C spanner - Costa Rica during semana santa is a ghost town, everything is shut.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 11:15:51 AM
Costa Rica during semana santa is a ghost town, everything is shut.
Holy Cow!
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on April 13, 2017, 11:19:59 AM
It's worth a try, not that I don't appreciate your negativity, Gryph.

Speaking of negativity, I had a rather negative experience pulling out my back trying to lift my lowered K75S onto it's stand when I first got it.

The cam action of the center stand loses it's mechanical advantage as the bike is lowered.  This combined with the additional distance you are required to raise the bike's 500+ pounds can indeed lead to some negativity.  Pulled muscles and even a right side flop.  Nice of you to notice.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 11:27:39 AM
Nice of you to notice.
It's all part of the service. :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 13, 2017, 11:33:20 AM
There is no way you could get it on the center stand now unless you were the hulk - the angle is just too small to be able to lever the bike up.  With my little ramp it is fine but taking it off the center stand it really crashes down pretty hard.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 11:41:06 AM
With my little ramp it is fine but taking it off the center stand it really crashes down pretty hard.
I guess this is just one dog that won't hunt.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 13, 2017, 11:50:11 AM
I think you might be right, I am hoping not though, it cost me $240 inc tax and shipping etc.  I guess I might be able to sell it here though.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 11:57:53 AM
I think you might be right, I am hoping not though, it cost me $240 inc tax and shipping etc.  I guess I might be able to sell it here though.
I meant the centerstand not the shock. I think this shock is going to work as well or better than the other and you are going to be more at ease at a standstill. I agree with Martin. Be on the lookout for a center stand that you'll eventually be able to modify satisfactorily.

Parking it on the side stand will need to do. Any temporary smoke from arising from starting in that situation will repel mosquitoes. Flats in tubeless tires can be plugged without dismounting them. Ride on!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 13, 2017, 11:59:56 AM
OK so let me test ride it when it is back on the road then sleeve the center stand to stop the issues and lower the front forks a little more to match.


Thanks for the advice.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 13, 2017, 12:04:24 PM
Analyze the center stand modification closely before undertaking it. Ensure that is is able to retract fully.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on April 13, 2017, 03:48:18 PM
It's nice having flat feet down at those stops.

The lowering may allow the center stand to ground when you do your next left hander with a dip at the apex and especially with your missus on board.It may be the stand's foot access extension which would trigger a rethink,hopefully.Like,just get rid of the stand.


Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on April 13, 2017, 03:51:24 PM

When you pull up ask a couple of friendly locals to help you lift it onto the stand, tell them that you threw your back out cage fighting, or something equally impressive or intimidating.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 19, 2017, 07:53:38 PM
Finally got the alternator back today after three weeks.  I fitted it and fired the bike up.  So far so good, a steady 13.80 V. 


I was planning a test ride but then the heavens opened and that was that.  The rainy season is here in a big way. In the last three days it has rained every day after lunch like clockwork. 


Luckily the mornings are nice so I plan a quick burn tomorrow morning to test the alternator and the new shock.


The sunsets aren’t bad either


* 20170419_174626-1008x756.jpg (28.91 kB . 768x576 - viewed 313 times)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 20, 2017, 02:07:31 PM
I managed to sneak in a quick test ride before it starts raining today.


The new rear shock seems fine, it feels like the bike wants to fall into corners a little more but that may be my imagination, I am planning to lower the forks a little more in the triple tree to balance the new lower rear end so I will see how that effects the handling. I do think speed bumps are going to be an issue, especially two up but I am sure I can persuade the missus to stand up before we go over one!


With the alternator fixed the difference in the engine is amazing  before at higher revs, 5k+ it always felt a little rough and unhappy, now it screams up there begging for more.  Before I knew I found myself at 7 k in 3rd doing 80mph...



Title: Re: K100RS parked for four months outside in all weathers
Post by: jc55 on April 20, 2017, 06:50:58 PM
I had no prob putting the bike on the stand with that shock. I step on the stand with my left foot, use my right hand on the handle, left hand on the frame and pop the bike up. You can also turn the shock around to place the pink sticker on the inside
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 20, 2017, 06:57:56 PM
Yeah JC yours is a monolever mine is a paralever - the standard shock length on the paralevers is more, 15.13 inches compared to 13.75 inches for a monolever. so going to a 13.2 inch is a big difference on mine.


https://forums.bmwmoa.org/showthread.php?19881-Correct-Length-for-91-K100RS-(4-valve)-rear-shock (https://forums.bmwmoa.org/showthread.php?19881-Correct-Length-for-91-K100RS-(4-valve)-rear-shock)


My bad for not checking, seems to ride ok, I just cannot easily use the center stand.
Title: Re: K100RS parked for four months outside in all weathers
Post by: jc55 on April 20, 2017, 07:01:00 PM
Ah, I see. Thanks for educating me. I hope it works out.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 22, 2017, 12:01:06 PM
OK I seriously need to stop reading the threads on this forum.  It seems every time I read about an issue happening to someone it happens to me soon after.


Point in case...


This morning it was a beautiful fresh day and so I decided to take my new shock for a proper test on some twisties on a short ride to the local town of Puriscal.


The bike was handing great and with a correctly working alternator so was the engine.


As I got more in to I started pushing more until, it was all high revving second and third gear turns.


On one straight bit I hit about 8500 revs in second and all of a sudden it felt like I had momentarily pulled the clutch then dumped it again. I shifted into third and everything was fine. I carried on riding in a spirited way and the next time I down shifted to second and accelerated hard I got the same thing again.  I eased off and left the bike in third for 15 mins or so then gently dropped into second and accelerated very gently - same thing happened again.


It seems I have caught whatever ailed Motorhobo.


So for now first straight to third only while I hit up Motorhobo and see if he has worked out the issue.


Sigh - I was having SO much fun!!


Title: Re: K100RS parked for four months outside in all weathers
Post by: mw074 on April 22, 2017, 01:10:54 PM
That's some kind of VooDoo power of suggestion.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 22, 2017, 02:22:06 PM
Does anyone know if the gearbox from a K100 RS 2v fits my 16v? Or if a K1100 RS gearbox fits mine?  I have found both for sale but want to make sure one or the other is compatible.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 22, 2017, 03:14:16 PM
Does anyone know if the gearbox from a K100 RS 2v fits my 16v? Or if a K1100 RS gearbox fits mine? 
Somebody always knows. The crux is whether the transmission has mounting points for the forward end of the final drive rod that attaches to the transmission. Read this (http://www.motobrick.com/index.php/topic,2866.msg16676.html#msg16676). Don't be put off by the title.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 22, 2017, 03:21:04 PM
Right I see, yeah looking at the three different transmissions I found on ebay only the K1100 one seems to have the tangs for the paralever. Even the one listed as a 1992 K100RS does not appear to have the paralever tangs I need.

The other option is to find out if the bits inside the tranny are the same and then just swap the innards from the new one into my existing housing,

Thanks Laitch
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 22, 2017, 03:36:57 PM
Before you run out and buy that transmission, it would be helpful to get from somebody who rides at high speed a description of what it feels like when a rev limiter kicks on. By your admission you were only 150 revs from that happening and that's easily within the margin of error for one of these tachs. The next point I'd like to understand is if this limiter is an electronic function, is it possible for it to malfunction then create performance problems at lower speed.

I'd be tempted to disconnect and reconnect the battery and hope for a reset, magical thinker that I am. :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 22, 2017, 03:41:56 PM
Positive thinking! I like it. I shall certainly disconnect and reconnect the battery just in case.


However since I had the same issue on 2nd at lower revs under gentle acceleration and only in 2nd not in 1st, 3rd or 4th no matter how hard I was accelerating I fear the worst.


The whole will it fit or won`t it issue has already got super complicated. From what I am reading it is possible that only the tranny from another K100 RS 16v will fit, not the K100 2v or the K1100 which would be a major pain.


Now I am trying to determine if the inside are same by going part by part....
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 22, 2017, 04:36:18 PM
From what I am reading it is possible that only the tranny from another K100 RS 16v will fit, not the K100 2v or the K1100 which would be a major pain.
That's not what I get from Frankenduck's post. The part numbers are different; that's certain. Don't jump the gun yet. Maybe somebody with more experience will chime in soon.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 22, 2017, 06:23:04 PM
So I reached out to Chris F bomb Harris and the man himself answered!


He said


Second gear needs to be undercut


This being chinese to me I did some research and found this video


https://www.youtube.com/watch?v=bl5SxlHo-rk (https://www.youtube.com/watch?v=bl5SxlHo-rk)


That seems like the perfect explanation of what is happening to me and Motorhobo.


It also seems like something that I might be able to have done here with a little luck.

https://www.youtube.com/watch?v=2gFXvgSsAJc (https://www.youtube.com/watch?v=2gFXvgSsAJc)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 22, 2017, 07:18:25 PM
Second gear needs to be undercut
Helpful research and presentation, Filmcamera. Thanks!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 23, 2017, 08:15:29 AM
In the end I have bitten the bullet and purchased a transmission. 


http://www.ebay.com/itm/401230552892 (http://www.ebay.com/itm/401230552892)


Chris Harris no less confirmed that a K1100RS tranny will fit my bike and there was one available on ebay in FL from a 1993  In shipping to my mail forwarding company it was $160.  Though heavy it is not hugely bulky so I can use there by sea service to get it here.  It will take a bit longer but that way I should be able to keep tax and shipping down to another $100.  So in the end $260 for a new tranny rather than trying to take mine apart and find someone to undercut second seemed to make sense. It also means the original one can possibly be used for spares in the future if needed.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on April 23, 2017, 08:24:21 AM
. . . on ebay in FL from a 1993 . . . 
Not just from FL but from the potato capital of FL. :2thumbup:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 23, 2017, 08:39:19 AM
Potato capital of Florida is a dubious claim to fame at best.


It is actually a mine of potential spares at what looks like good prices for any K1100 RS owners out there


http://stores.ebay.com/MotoplaneParts/BMW-/_i.html?LH_TitleDesc=1&_nkw=project%3A+1635&_fsub=2546164011&_sid=1038412291&_trksid=p4634.c0.m322 (http://stores.ebay.com/MotoplaneParts/BMW-/_i.html?LH_TitleDesc=1&_nkw=project%3A+1635&_fsub=2546164011&_sid=1038412291&_trksid=p4634.c0.m322)


I am going to post the link seperately as well in case anyone is looking for parts
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on April 23, 2017, 08:51:40 AM
Sounds like a wise choice.

I am going to guess that undercutting the dogs is a pretty touchy job with lots of set up time to get right.  The machining alone is going to cost almost as much as your "new" transmission and there is no guarantee that it will correct the problem.  Then there is the complete disassembly of your transmission to get the gear set out.  Lots of opportunity to create more trouble there.

$260 sounds pretty cheap, especially so if it includes the ability to add a couple good seal boots, a spare shift lever and a working gear position switch to your spares inventory.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on April 23, 2017, 08:53:14 AM
That was my thinking for sure, from the photos it even looks like it come with a driveshaft and a clutch arm which cant be bad.
Title: Re: K100RS parked for four months outside in all weathers
Post by: bocutter Ed on April 23, 2017, 10:27:53 AM
It's also possible you have a bent shifter fork, or have dropped a roller from the end of a fork. I got a used tranny missing a roller. (T'was ok because I just needed the selector shaft.)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 08, 2017, 11:31:14 AM
No they will not, those tools are for 2V bikes, adjusting the valves on a 4V is a totally different thing - and honestly not something most of us mere humans can undertake - I know I would never try it anyway.


As to whether it is needed or not.  Well I think it is a good idea to check the valve clearances once in a while but Chris Harris disagrees.


https://www.youtube.com/watch?v=bFkPnLVkxWQ&index=9&list=PLMqo5VIG0mVv0vdF8JDrAoeQoWxBm3CtR (https://www.youtube.com/watch?v=bFkPnLVkxWQ&index=9&list=PLMqo5VIG0mVv0vdF8JDrAoeQoWxBm3CtR)



Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 08, 2017, 06:18:13 PM
A Englishman, Frenchman and German were discussing the virtues of their various languages.

The Englishman says - English is the language of poetry, take for example the word 'butterfly' it captures the epitome of the creature, the gentle soul and magic of its loveliness.

The Frenchman says - Ah but French is the language of love, take for example 'papillion' it captures perfectly the romance and beauty of the creature.


The German says - zo vat iz vrong mit
schmetterling?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 09, 2017, 09:01:45 AM
When I did mine I followed the torque instructions from the pdf I downloaded from here



10c K100RS4V, K1, K1100: Tighten the clutch nut to 140
Nm, loosen it and then retighten to 50 Nm.


That is 103 foot pounds first then loosen and tighten again to 37 ft lbs.


I have had no issues after doing it like that
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 10, 2017, 08:36:48 AM
Wow time for me to tighten the clutch nut mire when I go in and replace my tranny in  couple of weeks when it finally arrives
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 13, 2017, 08:45:00 PM
My replacement transmission finally turned up today!!  :clap: :clap:


It came with half a drive shaft, I have one U joint but not the other. My feeling is that I can use it in emergencies but generally it is not advisable to  mix and match a drive shaft with a U joint, right?


The various shafts and splines all look good to me but I would appreciate a second opinion.


My plan is to install it on Tuesday (my older son has his day off then and can help me).  More to follow


* 20170513_150334-756x1008.jpg (33.89 kB . 432x576 - viewed 307 times)

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Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on May 13, 2017, 08:47:59 PM
Splines look great


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on May 13, 2017, 08:55:50 PM
 :2thumbup: looks fine.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on May 14, 2017, 10:01:40 PM
Those wide flats at the top and the sharp edges on those flats are a thing of beauty.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 16, 2017, 10:37:14 PM
I spent the best part of today installing the new transmission.  So far everything has gone perfectly - except for one small issue which I find odd.


The bolts connecting the tranny to the frame are M8 on my bike.  When I installed the new one it seems the LHS is M8 but the RHS is M6?? Is this even possible?


The tranny is from a 1993 K110 so maybe, but different size bolts on the left and right sides? Seems very unlikely.   I am not sure whether to just go with M6 or to tap out the hole and make it M8 - I am slightly worried that the frame is meant to have a M8 so a M6 might cause issues of some type.


I also retorqued the clutch bolt to the correct torque and used my new clutch centering tool - wow does that make things easy!  I also managed to get the entire rear brake system including ABS modulator off in one piece so no rebleeding needed.  :clap:


If all goes well I should be able to do a test ride tomorrow.


Any input on the tranny to frame bolts sizes would be great, thanks.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 16, 2017, 10:51:00 PM
This might be caused by guaro excesivo. Sleep on it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 16, 2017, 10:55:15 PM
hmm maybe but I discovered that issue at 3 pm before any guaro had been imbibed - maybe guaro deprivation is the issue?  I tried a M6 on that side and it threads in perfectly, on the other side I can just pull it out.  I am thinking maybe a bad previous repair? Anyway I am concerned enough that I plan to pull the tranny back out tomorrow so I can have a closer look and see what is going on.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on May 16, 2017, 11:58:34 PM
Filmcamera, can you post a photo of the bolts in question?

On my K100RS they are M10, and the K1100 also uses M10.  An M6 is even small for attaching the transmission to the intermediate section.  Those are all M8.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on May 17, 2017, 01:29:55 AM
Filmcamera, can you post a photo of the bolts in question?
Seeing is believing.
Pass over the guaro.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 18, 2017, 05:47:28 PM
Well it was a M8 helicoil in the M10 hole - kept in the JB weld (I think) of all things.


Anyway I drilled it out, put in a M10 helicoil and reused the correct sized original bol. Now the new tranny is installed and the bike is all back together and good to go.


I was about to go for a test ride when the heavens opened so I will try a quick ride tomorrow morning.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 18, 2017, 05:55:50 PM
Well it was a M8 helicoil in the M10 hole - kept in the JB weld (I think) of all things.
That must have been the result of milk punch and tobacco. Probably happened the same day they installed the front wheel flipped.
Your determination is inspiring.  :2thumbup:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on May 18, 2017, 05:56:57 PM
 :clap:
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on May 19, 2017, 12:11:22 AM
 :popcorm What a pain! So some clown thought a bit of bog would work with the M8 instead of M10 helicoil?
Stronger than new now though,unless it was bogged for a bad reason?

Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on May 19, 2017, 12:39:58 AM

I've experienced worse I had a 64 Impala Company car, opened the door on a slope when I let go of the door it closed on my leg and just about broke it.  :yow  Took it back to work and removed the door trim, lower half of the door was filled with concrete and chicken wire.  :mbird It had a beautiful paint job silver with a white roof, but on really close inspection was full of concrete and chicken wire. The salesmen who traded it had given the guy top dollar and copped heaps over it. In his defence it was the best job of concreting I've ever seen, it was a master piece Da Vinci would have been in awe.  :clap: :hehehe
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 19, 2017, 05:06:42 PM
Took the bike out today for a gentle shake down ride.  I only went about 10 miles but it was enough to warm the bike up fully and try every gear.  I was careful with the revs, no higher than 4500 so far.  Nonetheless the bike feels good and strong and smooth. I added molybdenum disulfide in with the gear oil and the shifts do seems very smooth.  The new transmission does sound different to the old one but not in a bad way.  Fingers crossed it is all good for now and I can get a few miles under me at last. :riding:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Motorhobo on May 20, 2017, 06:00:04 AM
I did that with the moly too, but when I put it in a beaker and mixed it in with the gear oil, after pouring it into the transmission most of the power had already settled to a layer of sludge in the beaker -- so I'm wondering whether this solid mixed in with the oil will really do anything but separate out from the liquid and cake up on the floor of the transmission case.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 20, 2017, 07:31:13 AM
I did that with the moly too, but when I put it in a beaker and mixed it in with the gear oil, after pouring it into the transmission most of the power had already settled to a layer of sludge in the beaker -- so I'm wondering whether this solid mixed in with the oil will really do anything but separate out from the liquid and cake up on the floor of the transmission case.
A few functions might be influencing what was observed by you, Motorhobo. If the volume of oil in the beaker was significantly less than the total volume of oil the transmission should contain, the solution in the beaker might have been saturated by the powder and could suspend no more powder. Second, the rate at which the powder dissolves might be dependent on the temperature of the oil. The amount of powder added might dissolve once the oil was warmed up. Last, two teaspoons might be excessive.

I think you should run the bike then drain the oil and search for precipitates. Do that a couple of times—maybe half a dozen, even more times using different amounts of powder. Keep careful records. I'm looking forward to your report as an entry in my diary.  :popcorm
Title: Re: K100RS parked for four months outside in all weathers
Post by: Motorhobo on May 20, 2017, 07:42:14 AM
I only did a half teaspoon per the amount that goes in there as per the recommendation I read here, so the amount wasn't an issue. Temperature was room temperature, around 75 degrees. I mixed it well and only poured in what had not settled, i.e. I didn't go trying to re-mix the sludge at the bottom of the beaker -- I figured either it settles in the beaker or in the case, and preferably in the beaker.

Don't have time to drain, check, redrain, repeat, keep log book -- the stuff is in there now and it's going to stay in there forever if it's settled. Anyway, it's irrelevant whether the stuff is in there or in a beaker. You can measure how much is suspended permanently and how much settles on the bench with a measuring spoon, a beaker and an eggbeater. But my suspicion is that if the powder is heaver than the liquid, it will all settle eventually and enough of it got on the gear splines to do any good -- that's a question for hell if I know who.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 20, 2017, 07:44:55 AM
Don't have time to drain, check, redrain, repeat, keep log book
That's a disappointment I'll just learn to live with. :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Motorhobo on May 20, 2017, 07:48:38 AM
That's a disappointment I'll just learn to live with. :giggles

Don't disappoint yourself -- you've got beakers, eggbeaters and logbooks and lots of time on your hands -- we're counting on you! :2thumbup:
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 20, 2017, 07:59:57 AM
Don't disappoint yourself -- you've got beakers, eggbeaters and logbooks and lots of time on your hands -- we're counting on you! :2thumbup:
I'm out of beakers.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on May 20, 2017, 08:26:59 AM
eBay or Amazon I am sure can solve the beaker problem.  In fact would a measuring cup from the Walmart kitchen section not work as well?


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Motorhobo on May 20, 2017, 08:34:12 AM
I confess -- 'beaker' was exaggerated -- I used a plastic beer mug. Send me a SASE and it's yours  :2thumbup:


But seriously -- I'm wondering whether the moly powder can do any good if all it does is sink to the bottom. Maybe that's worth a separate thread...if anyone wants expend valuable brain cells on the issue.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on May 20, 2017, 08:46:41 AM
MoS2 i.e. "Moly' is a platy mineral.  The lubrication comes from the plates sliding easily.  Or some such physical property which the details elude me this morning.  I would hope that if it settles it would be rapidly stirred up with the movement of the oil in the gear box.  I would never expect it to dissolve as the chemistry of oil and MoS2 would not allow that and the sliding property would be lost. The best would be suspension, which from your experience is not possible with the particle size used.

So let us hope for the stirring and mixing while riding occurs.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 20, 2017, 09:43:58 AM
Christmas is coming. Make your own stocking stuffers from supplies available here (http://www.rosemill.com/category_s/24.htm).
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on May 20, 2017, 03:38:06 PM
Amusing observation 'hobo.
The fairy dust sinks to the bottom.Who'd have thought? :hehehe
I guess a good thrashing would stir it up some.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on May 20, 2017, 05:53:23 PM

I use Molybond 2.5 in a tube it is suspended in some sort of lubricant. On gearbox changes there is no goop coming out on the change, however I am doing the changes hot, and didn't use it on the last change. So out of curiosity I will keep it to one side the next time I use it and allow it to settle. :dunno :popcorm
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Motorhobo on May 20, 2017, 08:19:08 PM
Amusing observation 'hobo.
The fairy dust sinks to the bottom.Who'd have thought? :hehehe
I guess a good thrashing would stir it up some.


Well, from my perspective what's amusing is that the observation was less about the obvious fact that it sank to the bottom, but rather about the dense sludge that accumulated there. Seems you missed my point, The Dude -- the point being that it didn't just settle into a happy pile of feather-light fairy dust -- that would have been grand since just a bit of turbulence would suffice to propel it into a state of at least temporary suspension -- but instead it appears that the particles bonded with each other to create a sludgy goo that stuck to the bottom of the 'beaker' like thick, black donkey snot. And my suspicion is that the turbulence in the transmission isn't enough to stir up that donkey snot because it's not a collection of particles any more, but rather a solid. It took several passes with paper towels and Simply Green to get that snot out of the bottom of the 'beaker'. So -- it ain't pixie dust. If you think it is, put some in a 'beaker', stir it up and look at it yourself. Do I want that donkey snot in the bottom of my transmission or final drive case? I don't know -- I'm not passing judgement about whether it does any good, I"m just saying what happens to it when it is placed in the fluid environment of gear oil. But the point of whether it does any good is moot, because after observing the donkey snot firsthand, don't matter how many times I drain the fluid, that snot ain't coming out. It's in there and is staying in there, for better or worse, and anyone considering using it should be aware of that.






Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on May 20, 2017, 08:29:28 PM
Interesting.  I have a bottle of Guard dog transmission additive with moly.  It has been sitting on the garage shelf with no disturbance for more than a year, and nothing settled out.

What is the brand and specifications of the product you are dealing with?

I too bought some moly powder off eBay, but maybe a test is in order before getting black snot syndrome.


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Motorhobo on May 20, 2017, 08:38:47 PM
I think we're talking about the same moly powder from eBay and the liquid in question is Mobile 1 Synthetic 75W90 gear oil but I'm sure you're going to get the same results with any gear oil. I have some Guard Dog that's over five years old and also no separation, but that's because the binding agent isn't a liquid but a paste. Like I said, I'm not saying mixing the moly powder in with gear oil is bad, in the sense that it might cause any damage. I'm just not sure it's good in the sense that it brings any tangible benefit if all it does is separate out from the liquid and create a layer of non-mixing solid that lives at the bottom of the case.


Go ahead and mix some up if you get a minute Elipten, I'd be interested to hear your opinion.


Edit@Elipten -- On second reading I see you're talking about GD transmission additive, not paste -- I don't know why it's not separating -- what's the percentage moly and particle size in that additive? Maybe just too much was used and the recommended amount should be in the hundredths of a tablespoon rather than half and the particles are too large to suspend.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on May 21, 2017, 04:10:43 PM
"Seems you missed my point"
:hehehe Motohobo  :hehehe
Yep.Appologies for that,I did it deliberately,which could be considered unforgivable but for no malice intended.
It's still funny it sinking to the bottom and staying there.I was originally going to suggest a stick to stir it up with before your ride but I'm going to pull my head in instead. :hehehe
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 24, 2017, 07:48:58 PM
Arrgghh the killer driveway from hell got me today!  With the new rain it is super slick and the rear wheel got away from me on the steepest part with the handlebars on nearly full lock.

I dropped the bike!

No huge damage but what a bummer.

Broken indicator lens (luckily glueable - yay superglue!)
Broken mirror - time to stick on some regular glass for now
A few scratches on mirror pod and fairing

All LHS.


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Time to practice my filling, sanding and painting skills.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on May 24, 2017, 08:03:45 PM
Probably going to happen again.  So you got to ask yourself, is this a garage queen or a battle scared veteran that I will ride and scar again?




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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 24, 2017, 08:16:14 PM
To be ridden for sure.  Sh1t happens, at least the bike is still rideable and the damage minimal.  I am 5'6" and it is a heavy bike, I always knew from the day I got it I would drop it on the driveway eventually, it was a question of when not if.  Ride on and enjoy!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 24, 2017, 08:17:10 PM
All LHS.
Iconoclastic!

Now it's a question of how many times. :giggles
Title: Re: K100RS parked for four months outside in all weathers
Post by: Motorhobo on May 24, 2017, 09:26:05 PM
Did someone ask my why I keep my K-Bikes naked with just a Parabellum on the front?


No? I'll tell you anyway...


That's why...I've dropped all four of the ones I own/have owned at least once.


Some of us suspect you did it on purpose just to have an excuse to extend this endless thread :riding:
Title: Re: K100RS parked for four months outside in all weathers
Post by: bocutter Ed on May 24, 2017, 10:04:47 PM
Time to practice my filling, sanding and painting skills.
Can you paint/varnish and sand the driveway eg. create a non-slip surface?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Elipten on May 24, 2017, 10:08:58 PM
Consider a low seat?  I find my RT to be top heavy compared to my Honda


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Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 24, 2017, 10:26:08 PM
I already have one - the bike is great at anything over 3 mph - but less than that it is a real handful if it starts to go. 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 24, 2017, 10:37:06 PM
The problem with the driveway is it is a 1 in 3 slope. more or less, combined with a 180 degree corner over 12 ft and it is part of the run off for the rainwater coming off the mountain.  That means that it gets lots of moss and algae growing on it.  It is more or less ok if if I stick to the tracks left by the cars but today I was slightly off line and it is like ice.  My bad.  Life in the tropics...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 24, 2017, 10:40:17 PM
Life in the tropics...
What brand and model of tire are you using?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 25, 2017, 10:18:25 AM
Continentals -
Contiforce 160/60/ZR18 rear
Contimotion 120/60ZR17 front

both in good condition but of unknown age, maybe four years max
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 25, 2017, 10:21:00 AM
Quote
Some of us suspect you did it on purpose just to have an excuse to extend this endless thread :riding:

Busted! For my next trick I plan to try high siding.. or maybe I should just go cafe racer  :yow
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 25, 2017, 01:57:46 PM
It seems something more than I suspected happened when the bike dropped.

I took it for a quick spin today and it was running really rough. It backfired often as soon as I rolled off the throttle even at low rpm's.  It hesitated and misfired when under gas and generally felt like it had no power.

Given  was going 0 mph when the drop happened the only thing I can think of is that some oil or something got somewhere it shouldn't be when the bike was on its side. Some transmission fluid did leak out of the top of the transmission for example. Is that normal when a K bike is dropped?

I am working now so I can't really tear it down too much but when I have time is there anything specific I should be looking for?  I did try searching running rough after a fall but didn't find anything specifically about after a fall just lots of general threads about rough running.



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 25, 2017, 02:00:50 PM
I should be looking for? 
Check all your spark plug caps to verify they are fitting tightly to the plugs.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 25, 2017, 02:13:20 PM
In fact, check all your electrical plug connections.  :yes
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 25, 2017, 02:14:28 PM
OK I will do that, thanks,
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on May 25, 2017, 02:16:21 PM
And your crankcase breather hose connection, too.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on May 25, 2017, 04:51:15 PM

I took it for a quick spin today and it was running really rough. It backfired often as soon as I rolled off the throttle even at low rpm's.  It hesitated and misfired when under gas and generally felt like it had no power.

Similar symptoms er happened to me.Awe feck it,now I'm doing it.
Factoids:
Took green goddess out into sun for a rinse and wipe before start procedure.
Key on,Idler lever full wack,clutch in(for less churning,less amps and less effing chance of the relay weld up after a while sitting less than two weeks),silent prayer,dab on the button.Brmmmm,sweet.
Full saftey gear on,fuck around with sunnies,get leg over,drop glove on the gorund just pick it up without falling off and vroom up the slope and fut, chug and splutter back to the sweetest idle.WTF!
Eh,the little sprung vac hose is off its nipple.
Ayy?Ah yes, perished.
Trimmed,gentle suck and tongue seal test for a couple a seconds,then push it on and off we go.
It was better.
Er,,,only just,splutter bog down all from idle upto 4500rpm but from then on we got rocket to the moon pulling as clean as.Oh well,I got my yeehaa.
 
Has yours got what mine's got,Filmcamera,or is it the other way round?This may be crucial in my approach for a solution.
 
 My fix,currently,will be to fiddle with the Guzzi, whispering sweet nothings in full view of the Brick.Cerimonioulsly transfer the ex lawn mower battery over and ride that(the bike)whilst I pontificate my next BMW parts purchases and procedures and the sheep mow the grass...Make sure you let us know what you did,Filmcamera,I'm feeling lazy.

I got my Triumph hat on at the mo and this has dumbed me down somewhat in my technological conundruming ability,going back to the 'fifties(for a seventies bike)does that to me and I love it.A simpler world.All that future techno stuff,oh well.Luck and serendipity can only take me so far,though,I'll be needing my Brick back sometime soon.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 25, 2017, 04:57:44 PM
That does sound similar yes.  Though mine sometimes didn't even want to idle and then every now and then woosh off it went as happy as Larry and revving sweeter. So far I have checked the spark plug connections which were fine and the coil end where one did seem loose.  All other connections I tested seemed fine.  So tomorrow I am going to go for another spin and see how it feels now.  Bloody rain gets me down at this time of year.  Yeah yeah I know you can ride bikes in the rain (back in blighty I was a 365 day a year rider)  but believe me in CR at this time of year it is more like riding underwater and so not the best conditions for a test ride.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 26, 2017, 08:31:39 AM
Nice weather for ducks!

This is a daily occurrence at this time of year

https://www.youtube.com/watch?v=LeEqeJy5Pl0 (https://www.youtube.com/watch?v=LeEqeJy5Pl0)


Title: Re: K100RS parked for four months outside in all weathers
Post by: bmwpyro on May 26, 2017, 12:14:16 PM
looks like where I'm from, flash rain, flash floods. I miss the rain...
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on May 26, 2017, 02:54:29 PM
I went out for a quick spin this morning and the bike feels much better.  I think the loose coil connection was the issue, thanks Laitch, good call!
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on May 26, 2017, 03:11:23 PM
I went out for a quick spin this morning and the bike feels much better.  I think the loose coil connection was the issue, thanks Laitch, good call!
Sweet!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on June 01, 2017, 11:06:07 AM
I checked the valve clearances yesterday.   So much for Chris Harris saying the valves don't get tight on a 16v - it seems they do, after 125,000+ miles at least.

I am not sure what to do now, live with it for the moment I think.  I do not know of a good mechanic here to try and replace the buckets and yes that includes the BMW dealer.  I don't feel up to the job myself yet. So I will check again next year and see how they are doing.

I also attempted to balance the throttle bodies and discovered I have a pretty big vacuum leak on the number two cylinder.  When I had the carb tune pro attached the vacuum tube hardly registered at all but if I pressed down on the air intake it started to show up. I am thinking that is a leak.  Time to order some bushings and intake manifolds.  I would be interested to get a report on the new injectors some people have ordered, it seems this might be the time to do that as well.

Valve clearances attached in case anyone is interested

* Valve clearance chart.docx (14.09 kB - downloaded 95 times)

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Title: Re: K100RS parked for four months outside in all weathers
Post by: riots100 on June 01, 2017, 03:29:40 PM
I do not know of a good mechanic here to try and replace the buckets and yes that includes the BMW dealer.  I don't feel up to the job myself yet


Do the buckets need replacing?  Generally you would replace the valve shims that ride on top of the buckets.  Replacing valve shims isn't hard with the right tool.  To replace the buckets you will need to remove the camshafts.  Putting it back together requires attention to detail, but certainly not beyond your abilities considering everything that you've already done to this bike.

(and as a film cameraman, you should know better than to post vertical phone video... :nono )
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on June 01, 2017, 06:13:38 PM
Do the buckets need replacing?  Generally you would replace the valve shims that ride on top of the buckets.
The four-valve engines are different animals from the two-valve, riots. They don't have shim-and-bucket adjustment. They just have inverted buckets; the cam pushes on the bottom of the bucket. Instead of replacing shims, you replace buckets to the tune of 28–35USD each from the dealer. The camshafts must be removed to replace the buckets. Fun, huh? I'm starting to understand and appreciate the differences.

* 4v cam follower. Diagram from MAXBMW parts fiche.png (48.05 kB . 510x360 - viewed 303 times)

Like you say though, Filmcamera is up to the task.
 
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on June 01, 2017, 06:20:20 PM
I hope I am and thanks for the vote of confidence. 

The real pain is there is no way of knowing what size buckets you need until you have taken the old ones out to measure them so you can order ones 0.05 mm or whatever shorter.  In my case that means the bike would be off the road for at least three weeks waiting for the new buckets to wend their way here. Since I had 10 out of 16 valves out of spec that is a lot of buckets!

First priority is the vacuum leak, then at least the bike will run and ride ok whilst I get together the cash for the buckets.

Riding it is after all what I want to be doing, at this time of year that is what weekend mornings are made for!

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on June 01, 2017, 06:24:47 PM
In my case that means the bike would be off the road for at least three weeks waiting for the new buckets to wend their way here. Since I had 10 out of 16 valves out of spec that is a lot of buckets!
Tight? Loose? Exhaust? Intake? You're killing us with suspense. I'd get a different feeler gauge and measure them again. The humidity might be affecting your vision.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on June 01, 2017, 06:30:10 PM
Oh sorry, I posted the chart in the earlier.

Anyway all the valves out of spec were tight, six of the intakes and four of the exhausts.  Not crazy tight except for cylinder one both intakes which was a go with o.10mm but no go with 0.13mm with the spec range being 0.15 mm to 0.020 mm.  The rest of the intakes were go with 0.13 mm and no go with 0.15 mm. Finally cylinder 3 was go with 0.15 and no go with 0.18 for both

Of the exhausts both valves on cylinders one and two were go with 0.23 mm no go with 0.25 with the spec range being 0.25 mm to -.30 mm, the others were fine 0.28 go 0.30 no go and 0.25 go 0.28 no go
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on June 01, 2017, 06:40:34 PM
I posted the chart in the earlier. . .
Anyway all the valves out of spec were tight, six of the intakes and four of the exhausts.
I overlooked the chart. Thanks for the spec review. It's probably good for both you and the bike that you looked in on them. I'd still check them with a different gauge—applied magical thinking sometimes works. :giggles

There's always GoFundMe. The narrative should go something like I'm stuck in Costa Rica during the rainy season and the friend who's staying with me needs an operation. Her valves might give out soon without it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on June 01, 2017, 06:48:36 PM
That beats the normal scam they run down here

Hi congratulations you have won the lottery for $2 million, all you need to do is send $2,000 to cover the state tax and we will send you the $2 million...

Either that or timeshares, coffee businesses or gold options - it is something of a haven for US ex pats selling fake deals over the phone.

The main hurdle I need to overcome is the minister of finance, she who must be obeyed, I get very stern looks every time I come home with a box marked MaxBMW...  :hehehe
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on June 01, 2017, 07:33:48 PM
+1 you can do it.
Tinkering will give way to strict methoding.The method is designed to progress through the task with no room for error.Apart from the maths calculating the new bucket size in each case and ensuring the cam timing is returned as it was,it will be pretty straight forward.Keep it clean.
I would consider not riding until sorted to preserve the valve face life.
All the best.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on June 01, 2017, 09:54:26 PM

A good engineering shop ( if such a thing exists in your area) should be able to lap them down. They should be able to do it without effecting the surface hardness if there is only minor wear.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on June 02, 2017, 08:54:44 AM
The main hurdle I need to overcome is the minister of finance, she who must be obeyed, I get very stern looks every time I come home with a box marked MaxBMW...  :hehehe

Have you tried bribing her with the M&M's?  "Look, honey, I got you some M&M's, and they even included some parts for the bike!"
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on June 02, 2017, 08:56:53 AM
Genius!

It shall be done...

Maybe I can get MaxBMW to send red wine instead, then I would be golden
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on June 02, 2017, 09:38:08 AM
Have you tried bribing her with the M&M's?  "Look, honey, I got you some M&M's, and they even included some parts for the bike!"
If that doesn't work, get a couple of packages from Tom of Finland. She'll be glad to see only MAXBMW boxes after that.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on June 08, 2017, 07:31:25 PM
LOL Johnny you crack me up - so funny!  :clap: :hehehe :2thumbup:
Title: July 4th breakfast ride
Post by: Filmcamera on July 04, 2017, 02:50:57 PM
My wife and I took advantage of it being a day off to have a rare midweek morning ride for breakfast before the rain came down.

Lovely ride, beautiful weather and great scenery.

Happy 4th to you all

Bike is running great!


* July 4th ride.jpg (43.72 kB . 768x432 - viewed 353 times)

* GOPR1956-view.jpg (43.49 kB . 768x432 - viewed 361 times)

* GOPR1956-cg.jpg (62.32 kB . 768x432 - viewed 350 times)

Title: Re: July 4th breakfast ride
Post by: K1300S on July 04, 2017, 06:21:39 PM
Nice!  great way to spend the morning!
Title: Re: July 4th breakfast ride
Post by: johnny on July 04, 2017, 08:23:42 PM
greetings...

that last photo... is that you or your wife...

j o
Title: Re: July 4th breakfast ride
Post by: Filmcamera on July 04, 2017, 08:40:05 PM
My wife - but I appreciate you thinking that at 52 I might have skin like that - or is it just time for an eye check up?
Title: Re: What Did You Did To Your Motobrick Today ?
Post by: Filmcamera on July 21, 2017, 01:41:26 PM
Today I got my new low seat - a Russell I think - a big thanks to diesis.

it looks great and she who must be obeyed says it is much more comfortable.

Next job - raise the foot pegs for her.


* 20170721_112052-1008x756.jpg (73.75 kB . 768x576 - viewed 454 times)
Title: Re: What Did You Did To Your Motobrick Today ?
Post by: Filmcamera on July 25, 2017, 06:49:07 PM
I finally got round to making the foot peg risers so my petite wife can sit more comfortably on her new Russell seat.

No major issues except I had to angle them forward when I put on the tragkorbs because they were too close otherwise, giving her no heel room.


* 20170725_163651-756x1008.jpg (43.07 kB . 432x576 - viewed 407 times)
Title: Re: Random Ride Photos ~ Where Did You Rode Your Motobrick Today ?
Post by: Filmcamera on July 27, 2017, 06:08:32 PM
I played hooky today and went to Manuel Antonio to see my cousin who is here on vacation.

It has been 30 years since we met so I think I am ok in skipping work to see him!

Great ride down in the morning, clear and cool and the bike running like a champ.  Less fun on the way back, very muggy and I got rained on pretty hard.

Worth it though for sure!

https://a.rever.co/embed/rides/589698 (https://a.rever.co/embed/rides/589698) here is a map from a new app I am trying

EDIT: BTW my new Russell seat is just brilliant. 4+ hours of saddle time and I got off fresh as a daisy!


* 20170727_105520-1008x756.jpg (46.55 kB . 768x576 - viewed 355 times)


* Screenshot_20170727-161356.jpg (21.93 kB . 324x576 - viewed 334 times)
Title: Oil usage?
Post by: Filmcamera on July 28, 2017, 10:49:28 AM
A have a quick question about oik usage as I am still fairly new to my bike ad am not sure what is normal usage for a 26 year old brick.

I did a 200 mile ride yesterday in hot weather but at normal revs, cruising at around 5000 rpm.

I checked the oil before I went and it was at exactly the right level. When I got back I let the bike cool down for an hour or so and checked again, the oil level was at the very bottom of the sight glass.  It took I would estimate one third of a quart or so to get it back up to the correct level.

So given my bike has at least 125,000 miles on the clock (I say at least because the speedo and odometer were not working when I got it and said 123,000) does that sound like a high amount of oil to use?

Title: Re: Oil usage?
Post by: Chaos on July 28, 2017, 11:59:17 AM
that seems pretty high.  most k's I've seen don't use more than 1/2 quart between 5000mile changes.  high usage is not necessarily bad as long as you don't let it get too low. 
Title: Re: Oil usage?
Post by: Revrdmark on July 28, 2017, 01:07:17 PM
That seems a bit high to me as well. It seems that if it were using/burning oil at that rate you would see at least some blue smoke from exhaust. If you didn't see any I would check for leaks. Old bikes ( BMW and others) tend to leak around drain plugs a thicker washer is usually an easy fix. The gaskets around the filter case and the gasket around the oil pump on the front right of the engine are usually culprits as well. If it ran ok I'd just chuck it up to one of the joys of riding a 25 year old bike and keep a few quarts on the shelf and check it before you head out to ride.


Sent from my iPhone using Tapatalk
Title: Re: Oil usage?
Post by: Martin on July 28, 2017, 04:16:43 PM

Bricks don't like sitting, and it seems due to the design of the engine if left sitting for long periods the rings can become sticky. You can either run a high detergent oil briefly to unstick them or just ride it until the rings free themselves up. A mates Brick was prodigious smoker when he first got them it. It had been sitting for long periods of inactivity, however it eventually settled down, and now only smokes after being left on the side stand.
Regards Martin.
Title: Re: Oil usage?
Post by: Laitch on July 28, 2017, 07:38:47 PM
high usage is not necessarily bad as long as you don't let it get too low. 
If it ran ok I'd just chuck it up to one of the joys of riding a 25 year old bike and keep a few quarts on the shelf and check it before you head out to ride.
:2thumbup:
If you aren't seeing clouds of blue smoke in the air or pools of oil on the ground, don't worry about it. Check it before the day's first ride and avoid overfilling it.
Title: Re: Oil usage?
Post by: Filmcamera on July 28, 2017, 08:50:28 PM
Great thanks everyone.

I have new hoses etc for the throttle bodies on the way and when they I fit them I think I might take off the valve cover again and be a little more liberal with the silicon when putting it back, I have the impression the bikes runs marginally hotter than before I checked the valve clearances and uses a little more oil so it could be there is a very slight leak, though no pools of oil on the floor.
Title: Re: Oil usage?
Post by: Scott_ on July 28, 2017, 10:38:12 PM
These brick engines like to hide oil...

point in case... I check mine daily before I pull it out of the garage. Normal level is at the dot.
One morning it was at the low level line, ok, so I filled it half way up to the dot, knowing it likes to hide oil.
Next day it was up to the dot. 2nd day it was now almost at the upper limit line.
Since then it has been between the upper level line and the center dot, slowly working it's way back down.
I've had the levels fluctuate up and down quite often.
As long as it is above the low level line, don't be over zealous in overfilling it, above the center dot.
Title: Re: Oil usage?
Post by: The Mighty Gryphon on July 29, 2017, 09:45:44 AM
I have a K100RS4v sister ship with 120,000 miles.  It sat for a couple years before I got it, and it appeared to not have been very well maintained before that.

This bike uses oil, a lot more oil than my K75's that go at least 3-4 thousand miles on a quart of oil.  When I got it, oil usage was about a quart every 6-700 miles.  While it doesn't smoke after the engine warms up, I have been told there was a definite scent of oil when other riders followed me.

Compression is good and uniform across all cylinders, so I didn't suspect rings.  I replaced the valve guide seals, and the head gasket.  Oil consumption decreased slightly to about a quart every 850-900 miles.  Better, but not as good as my other bricks.  I replaced the rear main seal and the o-ring which was leaking when I did the seals.

Right now I am thinking the oil control rings are shot.  I have put over 12,000 miles on the bike now and done Seafoam flushes and use Rotella T6 with no further improvement.  At the rate the bike uses oil, I can buy enough T6 to keep the oil topped up for about 50,000 miles for the cost of parts for doing the rings.  Why bother to fix them?

My daily commute is about 105 miles, and every morning I add about 4oz. of oil as part of my pre-ride check.  No big deal.  I also carry a 12 oz. bottle of oil in the cowl for longer trips. 
Title: Re: Oil usage?
Post by: Filmcamera on July 29, 2017, 09:48:12 AM
Yeah that sounds very like my bike.  OK I will not fuss about it too much for now and just see how things develop.
Title: Re: Oil usage?
Post by: Filmcamera on July 29, 2017, 10:46:16 AM
Hey TMG another quick question if I may.  I do not have a steering damper on my bike, do you have yours still? I found a secondhand one for about $80 but i am not sure whether I really need it so I wanted to ask before buying it.  Any thoughts?
Title: Re: Oil usage?
Post by: johnny on July 29, 2017, 11:25:08 AM
greetings...



Title: Re: Oil usage?
Post by: Filmcamera on July 29, 2017, 01:00:32 PM
Greetings...

Thanks once again for your sage and invaluable advice.

I shall, as always, give it the importance and weight it deserves.
Title: Re: Oil usage?
Post by: The Mighty Gryphon on July 29, 2017, 01:05:18 PM
Steering damper there, but not sure if it works.  Haven't had any tankslappers on this bike so maybe it is working. 
Title: Re: Oil usage?
Post by: Filmcamera on July 29, 2017, 01:25:34 PM
Thanks, ok another thing I will not worry about, as you know a lot of stuff was taken off the bike by the PO, I am just trying to work out what needs to go back and what I can live without.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on August 06, 2017, 03:47:42 PM
I got the parts to recondition the fuel rail etc yesterday so started the tear down today.

Once I had taken everything off there was a lot of dirt and muck etc, around the engine block.

 [ Invalid Attachment ]

 [ Invalid Attachment ]

Is all that black stuff normal? I am guessing it is carbon and or oil.  I want to clean it all off but am a little worried about dropping a bunch of crap into the engine.

The rest of the fuel system did not look much better.

I am going to try my best and clean it all up and see how she runs afterwards. 

One last thing, has anyone used a reusable clamp instead of the once time use clamp part  11 61 1 460 900   

 [ Invalid Attachment ]
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on August 06, 2017, 03:57:14 PM
Apparently Suzuki have ones that fit, I'm not sure what model. But you cold try using stainless steel cable ties.  :dunno
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on August 06, 2017, 05:24:02 PM
Apparently Suzuki have ones that fit,
http://www.k100-forum.com/t7753-plug-wires#94719
Title: Re: K100RS parked for four months outside in all weathers
Post by: billday on August 06, 2017, 08:27:20 PM
This is written for the K1100 but I found it super-helpful when doing the intake refurb on my K100:

http://www.motobrick.com/index.php/topic,624.0.html

(Ask The Management to do something to make the pictures come back.)

You do not need to use the "One-Time Clamps," but you *do* need to get the right stuff. It's available from McMaster-Carr, be a good neighbor and use the search function before asking for answers that have already been answered.

Good luck!
Title: Re: K100RS parked for four months outside in all weathers
Post by: johnny on August 06, 2017, 08:42:25 PM
greetings...

you can getts the pictures to come back... its quite easy... pony up 399$ to each of the posters photobucket accounts...

quite simple...

j o
Title: Re: K100RS parked for four months outside in all weathers
Post by: riots100 on August 06, 2017, 08:50:06 PM
Is all that black stuff normal? I am guessing it is carbon and or oil.


If the black stuff is wet, then it is oil, and that would be a problem.  If it is dry and powdery, it is carbon and is normal given the age of the bike.  You usually see black carbon deposits on the exhaust ports and a brown/burnt carbon build up on the intake ports.
Title: Re: K100RS parked for four months outside in all weathers
Post by: billday on August 06, 2017, 09:02:07 PM
greetings...

you can getts the pictures to come back... its quite easy... pony up 399$ to each of the posters photobucket accounts...

quite simple...

j o

Ok . . . I'm on it . . .
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on August 06, 2017, 09:09:07 PM
Well I got everything back together and she still runs at least.  Tomorrow I am going to try balancing the throttle bodies.  It seems to run better than before but that is probably wishful thinking.

Title: Re: K100RS parked for four months outside in all weathers
Post by: Hilltopper46 on August 06, 2017, 10:39:27 PM
http://www.k100-forum.com/t7753-plug-wires#94719 (http://www.k100-forum.com/t7753-plug-wires#94719)


Those 48MM Suzuki clamps are good for the bushing (rubber tube) to the intake, but for the throttle body to the air cleaner boots, you will have them tightened as far as you possibly can and they just hold.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on August 07, 2017, 05:26:57 PM
After seeing a video on youtube the other day I found the DOT stamp on my tyres - they were manufactured in June 2006!

That means when the PO said it had been laid up -for a couple of years - it appears it was more like seven or eight.  The tyres had maybe 500 miles of wear on them when I got the bike.  Now this is CR so I can see a dealer selling 3 year old tyres but even so that means there were fitted in 2010 at the latest.

So a couple is probably more like six years.

I know I should change the tyres instantly but I am not going to just yet, a pair of tyres here is at least $600 and it is not like I am racing the bike so I will keep riding on them for now.


* 20170807_152325-756x1008.jpg (35.85 kB . 432x576 - viewed 404 times)


* 20170807_152349-756x1008.jpg (34.24 kB . 432x576 - viewed 449 times)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on August 12, 2017, 10:24:39 AM
OK wow!

Just finally had time for a test ride after doing the CO pot, TPS and TBs

What a huge difference, suddenly the bike is just raring to go and pulls hard all the way to 8000+

It is also running much smoother.

I love it!

Thanks very much for all the help, especially Young Engineer who helped me do the CO Pot.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on August 17, 2017, 04:48:56 PM
My iconic 22 liter tragkorb lid decided to commit suicide today by opening at 80 MPH and then coming detached from the base and bumping and rolling down the road.

I hope to be able to repair it but if anyone has a spare hinge or back rest for sale that would be great - the OEM prices on Max BMW are insane

 [ Invalid Attachment ]
 [ Invalid Attachment ]
 [ Invalid Attachment ]
 [ Invalid Attachment ]
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on August 17, 2017, 05:12:33 PM
My iconic 22 liter tragkorb lid decided to commit suicide today by opening at 80 MPH and then . . .
That's a classic scenario. That's why Chaos rigged his this way. I think he riveted a piano hinge on the opposite side but maybe he used gate hinges.
 [ Invalid Attachment ]
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Dude on August 18, 2017, 12:08:41 AM
Piano hinge padlock clasp and double bungee.
It's good you noticed it gone and they are fun to follow down the road. :riding: sorta like delaminating truck tyre fun.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on August 26, 2017, 07:09:53 PM
Just a quick test of new photo posting method

(http://www.motobrick.com/gallery/0/3823-260817190635.jpeg)
Title: Re: K100RS parked for four months outside in all weathers
Post by: billday on August 26, 2017, 08:07:38 PM
Purty.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 29, 2017, 06:04:49 PM
I just took delivery of two brand new EBC discs for my bike - MD607LS and RS.

(http://www.motobrick.com/gallery/0/3823-290917175437.jpeg)

I have one question for anyone else who has brought new discs from EBC.  The discs come with bobbins because they are floating discs.  Out of the box however they seem totally solid.  Is that normal? Does it take a few rides for them to loosen up?

Also I received a small oil cooler that I am going to use to cool the fuel - thanks to Laitch for the link and suggestion

(http://www.motobrick.com/gallery/0/3823-290917175514-729531.jpeg)

However it seems I ordered the wrong adaptors  does anyone know what I need to convert the cooler so I can connect a fuel hose to it?

(http://www.motobrick.com/gallery/0/3823-290917175514-730862.jpeg)

I brought these adaptors - Straight T-6 Aluminum Fuel Hose fittings Adaptor Male AN6 6AN AN6 (male) to AN10 (male)

(http://www.motobrick.com/gallery/0/3823-290917180003.jpeg)

It looks to me like the thick end is the same as the one on the cooler so I guess I need a female AN10 to something - the AN6 that comes with the adaptors I got seem too thick to use with the fuel hose I also got which is Fuel Injection Rated Gas Petrol Hose 5/16"



Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on September 29, 2017, 09:20:53 PM
I have one question for anyone else who has brought new discs from EBC.  The discs come with bobbins because they are floating discs. Out of the box however they seem totally solid.  Is that normal?
Yes. Install them and ride.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 29, 2017, 09:25:12 PM
Thanks!
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on September 29, 2017, 10:10:10 PM
To connect the fuel lines you need whatever the threads are in the cooler to an 8mm or 5/16" hose barb.

What you have now looks like a flair fitting for hard tube or a hose swivel.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 29, 2017, 11:40:51 PM
Thanks TMG - as soon as I looked that up I knew you were spot on.  Ordered and on the way...  photos to follow when I have everything installed.  Being in Costa Rica that might be a couple of weeks so watch this space!
Title: Re: K100RS parked for four months outside in all weathers
Post by: billday on September 30, 2017, 07:13:56 AM
Is adding that extra plumbing to the fuel system going to affect fuel pressure? Are you putting it before or after the fuel rail / injectors?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 30, 2017, 07:16:35 AM
It is going on the return side after the fuel rail etc, between the FPR and the tank.  In theory it will keep the fuel cooler therefore limiting the heat on the legs.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 30, 2017, 09:52:14 AM
I have also just brought a new air temp sensor because my fan never kicked in automatically.  The engine temp gauge works fine, as does the fan (I had installed a manual switch).  Even with the new temp sensor the fan still does not come on but I am at a loss to know what else to check, the fan works, the sensor works, the circuit works because I wired the manual switch into it - that seems to just leave an issue in the Motronic, is there a way to check?
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on September 30, 2017, 10:32:48 AM
that seems to just leave an issue in the Motronic, is there a way to check?
The relay could be a problem or the wiring between them, too. See if you can sort it out using some of this thread.
http://www.motobrick.com/index.php/topic,3149.msg18940.html#msg18940 (http://www.motobrick.com/index.php/topic,3149.msg18940.html#msg18940)
http://www.motobrick.com/index.php/topic,3149.msg19595.html#msg19595 (http://www.motobrick.com/index.php/topic,3149.msg19595.html#msg19595)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Scud on September 30, 2017, 01:44:02 PM
Is adding that extra plumbing to the fuel system going to affect fuel pressure? Are you putting it before or after the fuel rail / injectors?


I don't think it would affect fuel pressure, there is just more volume before the pressure regulator. However, if it did cause a problem, a pressure regulator could be installed between fuel rail and the cooler - and removed from the tank.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on September 30, 2017, 05:51:14 PM
Working through the diagnostics so far

As fas as I can tell there is no resistance between pins 21 and 32 on the motronic connection - the multimeter reads 1

Pin 87 of the fan relay is not grounded with the motronic unplugged and the ignition on, that is to say with the neg lead of the multimeter in plug 87 on the harness and the positive lead on a 12v out I get 0.32V reading on the multimeter.

Since the air temp sensor is brand new I am hoping that it is  ok

That seems to point to a issue in the loom wiring I think.  I will keep digging
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on September 30, 2017, 09:35:56 PM
Is adding that extra plumbing to the fuel system going to affect fuel pressure? Are you putting it before or after the fuel rail / injectors?

The cooler goes in the return line from the pressure regulator to the fuel tank so there is no real backpressure.  I have been running a cooler for two years and 15,000 miles now with no adverse effect on performance, if anything by keeping the fuel cool the higher density makes the mixture a tiny bit richer, possibly increasing the power by an infinitesimal amount.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 01, 2017, 11:17:06 AM
Great to know you have been running a cooler with no issues TMG.  If you have a chance it would be great to see a photo of how and where you installed yours.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 01, 2017, 02:52:40 PM
If you have a chance it would be great to see a photo of how and where you installed yours.
Gryph probably has more images, but there are several in this K100- forum thread I think I sent you.
http://www.k100-forum.com/t9594-k75rt-fuel-cooler#113838

There are probably images on MB.C, too.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 01, 2017, 02:58:38 PM
Yes I had seen those that you sent, thanks very much for that.  There are three of four different ways of mounting the cooler shown in those threads, all of which are useful, I was just interested to see how our very own TMG did it.
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on October 02, 2017, 01:11:27 AM
I think I put a separate thread at the K100 forum, but I don't know how to find it.

I am not sure if what I did is applicable to the K100 because I put my cooler in the space created by eliminating the front cylinder when the K100 was redesigned as a 750cc triple. Am not sure there is enough room below the radiator for a cooler like mine on a K100.

I haven't done my other bikes because I don't ride them long distance like the RT and they have sufficient airflow to minimize the discomfort from the hot tank.  Early this morning I rode the RT about 180 miles in mid 30's temperatures(Fahrenheit) at speeds of 75+mph across Michigan's Yuper.  I was kind of wishing the tank would have gotten a bit warmer.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Inge K. on October 02, 2017, 02:16:22 AM
I think I put a separate thread at the K100 forum, but I don't know how to find it.

http://www.k100-forum.com/t9594-k75rt-fuel-cooler (http://www.k100-forum.com/t9594-k75rt-fuel-cooler)
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on October 02, 2017, 10:56:20 PM
Thanks Inge!!!
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 06, 2017, 03:31:08 PM
This week I installed my new brake discs and pads.  When I bled the brakes they felt fine but when I went for a brief test ride a problem appeared and I am not sure exactly what is causing it.

When the bike is still the front brake lever works pretty much as normal, depressing with a little bite until about half way through the travel when the bite gets progressively stringer and when I start off it does as well. However as soon as I get over about 3 mph the lever will not move at all but the brakes are not on.  If I bring the bike to a stop using the rear brake the lever suddenly starts moving again.  When it is moving very slowly the brakes seem to work, obviously not much braking force but since they are brand new discs and brand new pads I assume that is fairly normal.

The only issue I had of any sort installing the pads was that I got the cheap chinese pads and the top of the shoulders were too tight a fit to able to get them installed properly so I had to grind back maybe 1/2 mm to they are snug against the bolts but I can still get the main pin in.
 
Here is a picture of the old pads with an arrow showing where I had to grind back a little

(http://www.motobrick.com/gallery/0/3823-061017152710.jpeg)

I also noticed a line around the very outer edge of one of the new discs

(http://www.motobrick.com/gallery/0/3823-061017152943.jpeg)

Something seems to be stopping the ads from moving  when the wheel is moving but I am not sure what I should do to fix the issue.

BTW my test ride was no more than 300 meters, I live at the top of a very steep hill and did not want to go all the way down with just the rear brake so I turned around pretty much as soon as the issue showed up.

Any suggestions would be very welcome.




Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 08, 2017, 11:52:35 AM
Well it is fixed but it was a weird issue. 

I took the pads off and ground them down a little more, until they moved freely.  I then took it for another tide and had the same issue...  then all of a sudden the ABS warning light came on and the brakes started working.  When I got home I rechecked the gap of the front ABS sensor and found it was out of spec so I took a couple of shims out until it was correct. 

Then I went for another ride and the brakes were fine - though obviously pretty soft since I need to bed in both the pads and the discs. 

It seems odd that a out  of spec gap should make the brake lever inoperable but there you go.

Anyway it is fixed, next week the fuel cooler!

Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 15, 2017, 11:16:08 AM
The fuel cooler is installed.

It was very easy to fit but I am not 100% sure about the location.  I like how it looks where it is but have a couple of concerns, one it is hard against the oil/water pump and two it might be vulnerable to stones etc.

(http://www.motobrick.com/gallery/0/3823-151017111519-758862.jpeg)

Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 15, 2017, 03:06:08 PM
The fuel cooler is installed. . . .
I like how it looks where it is but have a couple of concerns, one it is hard against the oil/water pump and two it might be vulnerable to stones etc.
Install a bucket-bred Ozian-style mudflap and relax.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on October 15, 2017, 03:11:36 PM
You could also fit steel mesh over the belly pan intakes. I replaced the steel mesh on my 75s with nice shiny aluminium, don't I just discovered a hole. It must have been done before fitting my bucket flap.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 15, 2017, 03:20:13 PM
It was very easy to fit but I am not 100% sure about the location.  I like how it looks where it is but have a couple of concerns, one it is hard against the oil/water pump . . .
Install a bucket-bred Ozian-style mudflap and relax.
On second thought, don't relax yet. You want air to flow easily through the cooler for heat dissipation. It isn't going to do that with its air outlet side hard against the engine. You'll need to move it away from the engine to improve air flow through it or you won't be getting full effect.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on October 15, 2017, 03:34:00 PM
True good spot Laitch, I was looking at it and wondering? I've been thinking about a fuel cooler for mine due to fuel vaporization on hot days in traffic with less than 1/2 a tank. Under tank insulation has reduced the problem but not cured it. I've got a few alternative choices keep the tank full, don't ride in traffic on hot day's, paint the tank white. Filmcamera I would love to hear the outcome, and also find the temperature difference between running with and without the cooler.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 15, 2017, 03:42:38 PM
I was looking at it and wondering? I've been thinking about a fuel cooler for mine due to fuel vaporization on hot days in traffic with less than 1/2 a tank.
If the cooling fuel were a priority for me, I'd follow Mighty Gryphon's concise post describing mounting a fuel cooler and its effect. My naked bike doesn't channel much heat at me but I'd probably mount one on the bike if I lived in a hot climate like the desert Southwest,  Deep South or parts of Oz, or often spent time in slow-moving traffic.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on October 15, 2017, 04:01:54 PM
Laitch I thought Filmcameras climate would be more akin to mine than Gryphs climate. I'm about to look at Gryphs installation again but I would really like to see the temperature variations between before and after.  Also Gryphs was fitted to the return line whereas due to the vaporization I believe it would be more beneficial to fit mine to the supply line. I was going to go up to a local hobby foundry and see if they would cast me a aluminium brick.  I have previously milled aluminium using a wood router and bits and my drill press with a cross slide vice. Unfortunately too much rain at the moment.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 15, 2017, 04:08:10 PM
Laitch I thought Filmcameras climate would be more akin to mine than Gryphs climate.
Gryph does extensive travel in all climates except during late fall on the questionably-maintained gravel backroads of the mountain here. :giggles He rode throughout the hellishly hot weather of the beautiful desert West with that cooler, I believe. I think his how-to might include a review its performance during that experience, if I haven't skewed the chronology.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on October 15, 2017, 04:17:08 PM
 :2thumbup: Thanks Laitch I will try and hunt it down. Oooh the rain has stopped, but we now have high winds, might get out between downpours.
Regards Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 15, 2017, 04:21:13 PM
:2thumbup: I will try and hunt it down.
Here, Martin. This should be worth a profiterole next time I see you, which would be the first time. Who's counting though?
http://www.k100-forum.com/t9594-k75rt-fuel-cooler (http://www.k100-forum.com/t9594-k75rt-fuel-cooler)
Title: Re: K100RS parked for four months outside in all weathers
Post by: Martin on October 15, 2017, 04:42:34 PM
Laitch if you come to OZ I will buy you a piece of heaven a Beefys Chocolate Éclair, thanks mate. No ride today we are getting over 4" plus in the next 24 hours. I envy the fortitude that enables you to bear through your Vermontian winters, I would go stark raving mad. ( I'm nearly there now after five Brickless days).
Regards a slightly depressed Martin.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Filmcamera on October 15, 2017, 08:28:33 PM
I am going to try it is as is (with some steel mesh) for now.

 If it does not seem to be making much difference then I will mount it higher up outside the radiator grill as per the link Laith provided.  It just looks so right where it is so I am hoping it will actually do the job as well!

Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on October 15, 2017, 09:01:26 PM
The smell of burning ear hair made me think someone was talking about me, and sure enough here you are discussing Ilsa'a fuel cooler.   Regarding performance, I will say that it has noticeably reduced tank temperature, especially so in hot weather, as witnessed in the motodebauchery of 2016 in the desert southwest in temperatures running as high as 115 in the shade(when shade could be found).

I put it in the return line for a couple of reasons: 

First, I wanted to cool the fuel just prior to it going back into the tank because  most of the heat is picked up in the rail, fuel pressure regulator, and the return line.  I wanted to cool the fuel before it got between my legs, not after it had cooked them.

Second, being down stream of the fuel pressure regulator, the pressure in the return line is only high enough to flow back into the tank.  In the supply to the rail the pressure is 35 psi.  I go by the philosophy that it's best to minimize the amount of plumbing that is under pressure.

I used an extruded, fairly heavy wall aluminum unit for two reasons:

First, it would be able to handle any high pressure it might be exposed to, and second, since it was hanging out in the air in front of the engine, I wanted it to be stoneproof. 

The unit I selected had an internal capacity of about 1 liter which gave the fuel a residence time in the cooler of over 1 minute.  I figure that the longer it is being cooled, the cooler it will be when it gets back to the tank.  Especially important because the shape was not optimum for air flow over it.

My installation works great on the K75 without belly pan, but may not fit a bike with a belly pan, or a K100 because I have put mine in the space freed up by the loss of one cylinder in the K75.

I like film camera's installation, but being hard against the front of the engine may actually cause the fuel to be heated rather than cooled.  It may be desirable to modify the grille work in front of it to allow it to be a little further forward of the engine.  Also, it might be good to have a heat shield behind the cooler to shield it from engine heat.  A simple sheet of thin aluminum should be adequate.  Better yet would be to install the cooler in front of the grille in the open air and let the grille afford some heat shielding.
Title: Re: K100RS parked for four months outside in all weathers
Post by: Laitch on October 15, 2017, 09:16:35 PM
The smell of burning ear hair . . .
No ride today we are getting over 4" plus in the next 24 hours. I envy the fortitude that enables you to bear through your Vermontian winters,
I thought somebody was trying to dispose of oil containers in a burn barrel. The wind is coming from the west tonight.  :dunno I'm glad it was just you, Gryph.

I just returned from a night ride along both sides of the river—70ºF, wind blowing at 35 knots filling the air with swirling leaves. The last weekend tourists headed home. Perfect! When I covered the bike, rain was falling fast. Tomorrow the high will be 45ºF.
 :giggles 
Title: Re: K100RS parked for four months outside in all weathers
Post by: The Mighty Gryphon on October 15, 2017, 09:23:24 PM
The last weekend tourists headed home. Perfect! When I covered the bike, rain was falling fast. Tomorrow the high will be 45ºF.
 :giggles

The kind of weather I like to tour in.  Light traffic and off season rates at the no tell motel.