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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => Project Custom Motobricks => Topic started by: Arktasian on April 22, 2017, 10:20:04 AM

Title: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on April 22, 2017, 10:20:04 AM
I've come here to contribute technical information and properly laid out documentation for projects I have underway on a 1995 K75, initially a right hand side stand conversion, and followed with the MicroSquirt upgrade that I do on bikes, which will include turbocharging, and other neat upgrades within a pretty standard package exterior (not really a café type although there are some really nice examples here). Could be a DIY format depending on interest.

An edit added:
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 22, 2017, 10:47:42 AM
Perhaps a photo of said bike, she's rather clean and pleases everyone I've shown it to.
Learning the in's and out's of a particular forum always fun, I'll see if this posts with the photo.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 22, 2017, 11:07:26 AM
OK - that worked out fine.
I'll just put up the photos and print for the side stand mod now and then excuse myself to continue with family endeavors and the well deserved weekend.
The stock side stand was removed for the following reasons:
Following are a print of a simple flat bar that once fashioned fits "piggyback fashion" up against the stock center stand. I have the bike hanging on the workshop table at this time so won't test the lean angle till later - but I already believe my math let me down a touch and I'll increase the tab bend up to 35 degrees (from 25). A bit of grinding is required on a couple of steps which I can add if this post doesn't serve to scare off any response or interest (I find once a technical write up or document is offered that has frequently been the case on other projects, but we'll see)
NOTE: Print disappeared so I've tacked it back onto a later post.
Title: Re: 95 K75 on Mod Table
Post by: D.Bachtel on April 22, 2017, 03:00:30 PM
I'll take one once you've perfected it. Good idea!  :clap:

Don in Nipomo
Title: Re: 95 K75 on Mod Table
Post by: Laitch on April 22, 2017, 03:17:56 PM
OK - that worked out fine.
I'll just put up the photos and print for the side stand mod now and then excuse myself to continue with family endeavors and the well deserved weekend.
When you return, please post a photo from the front or the rear of the bike that clearly shows the lean angle developed by your RHS side stand. I haven't had a problem yet deploying or retracting the side stand and center stand with either a grimace or smile.
Title: Re: 95 K75 on Mod Table
Post by: trek97 on April 22, 2017, 03:47:41 PM
OH YEA!  this is very cool.  I'll stand in line for one also.  In the event you plan on producing a few.   :2thumbup:
Title: Re: 95 K75 on Mod Table
Post by: Chaos on April 22, 2017, 10:25:50 PM
I always thought they should have designed the engine with the crank on the left.  Silly Germans.
Title: Re: 95 K75 on Mod Table
Post by: Martin on April 22, 2017, 10:34:33 PM

Good solution would make a lot of sense in OZ. I had to seek another parking spot the other day due to the camber.
Regards Martin.
Title: Re: 95 K75 on Mod Table
Post by: D.Bachtel on April 22, 2017, 11:02:17 PM
I haven't had a problem yet deploying or retracting the side stand and center stand with either a grimace or smile.

No problem deploying or retracting here either.
I know you're suppose to mount and dismount a horse from its left, but with this engine side stand placement just doesn't make sense.
I left a car show once after parking on the side stand for an hour.
Pissed a bunch of lowriders off, glad I knew a few of them from work!


Don in Nipomo
Title: Re: 95 K75 on Mod Table
Post by: Laitch on April 22, 2017, 11:17:12 PM
Good solution would make a lot of sense in OZ.
+1 . . . depending on the lean angle.
Title: Re: 95 K75 on Mod Table
Post by: Martin on April 22, 2017, 11:39:42 PM

Down hill with a big camber, don't even try. Have seen a few bikes succumb to gravity, gravity always wins in the end. :yow
Regards Martin.

Title: Re: 95 K75 on Mod Table
Post by: Martin on April 23, 2017, 01:33:42 AM

Exactly like that, except imagine if you had to do it going the other way in the left lane.  :falldown:
Regards Martin.
Title: Re: 95 K75 on Mod Table
Post by: bocutter Ed on April 23, 2017, 10:12:43 AM
Exactly like that, except imagine if you had to do it going the other way in the left lane.  :falldown:
Regards Martin.
I had that outside a restaurant last year. Had about 10 kilo (22 pounds) in the top-kitchen. It was pole vauting on the side stand.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 23, 2017, 10:25:30 AM
Refreshingly polite responses here (perhaps I should divulge the full Monty on what is slated for the little K75 :hide: )

Regardless, at the heart of my stand mod is that you can establish what ever "lean angle" you wish for with the tab angle that is bent on the bracket. The stock cast tab off the left side of these bikes appears to have 35 degrees from level, which I suspect I may utilize from the current 25 I'd calculated on the other side as it is pretty much a mirror image transfer of dimensions and locations. I'll document all that once the bike can actually come off its hangers and table, and sit on the right side - from current angle to what 35 and other might look like. The spring action is crisp to avoid the stand flopping down, or releasing up when you sit on her. Not sure it shows in the photos well but I milled the center out a tad to reduce weight, and it is rather overly strong. The little bushing actually resembles a bearing race with grease grove and is a precise operation fit to the common 5/8"dia hole size.


Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 23, 2017, 10:59:03 AM
Question, what controls the "curious" comment below my handle? (yes, I'm curious but also other things).

I'd like to offer the game plan for this bike, the post is labeled "On the Mod Table" after-all. I've purposefully come to this club for the expressed hope and interest of exchanging information and knowledge on certain very specific "K" mods that I note a few others have been working with and where there does not appear to be a huge reaction to "significant" upgrades, nor angst over the corruption of the pure & perfect stock form bikes.
Depending on reception, I can offer photos, and "Lots" of technical discussion. (one of my bads, I type fast and default to much too long emails etc. :blah: )
The pathway:
The time line on this is rather spread out, normally I would have something finished and then post about it (to avoid the "you can't do that" response) so it may prove necessary to create another post along the way if need be. Its all good, one of the main reasons I purchased this bike was to have something to work on during riding season, and good ole stress relief.
Hoping others that sit in this section of the bleachers will be interested in discussion. I'll leave it at that and hope for some company.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 23, 2017, 11:04:28 AM
I see typos already - how does one edit a response?
Title: Re: 95 K75 on Mod Table
Post by: D.Bachtel on April 23, 2017, 11:15:38 AM
Modify in the upper right will allow you to edit.

The "curious" designation is status is based on number of postings. You veteran status will grow with time, maybe.

Sounds like you have a plan in mind and you're willing to invest the time. Go for it.

My 87 is just an well maintained survivor that still kicks ass.

Don in Nipomo
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 23, 2017, 11:21:43 AM
Very nice bike there Don.
I don't see a "Modify" comment in the upper right of anything - so suspect that too may be offered once a newbie has surpassed a magical number of posts? (I'm not complaining, just acknowledging that my spelling is atrocious - plus a sarcastic streak)
Title: Re: 95 K75 on Mod Table
Post by: Laitch on April 23, 2017, 01:17:31 PM
. . . plus a sarcastic streak)
We're all on tiptoe with anticipation, Arktasian. :giggles
Title: Re: 95 K75 on Mod Table
Post by: Chaos on April 23, 2017, 01:42:08 PM

I don't see a "Modify" comment in the upper right of anything

I see it, if you're on a phone it might not show up the same
Title: Re: 95 K75 on Mod Table
Post by: Laitch on April 23, 2017, 02:02:35 PM
I see it, if you're on a phone it might not show up the same
It's post-count dependent, Chaos. He'll get it eventually.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 25, 2017, 11:01:55 PM
If typos are restrictive, then the edit function sure as heck needs to award itself to myself in order to remain semi compliant :oops:

 
As mentioned, I'm a bit premature in mention of upcoming K mods, below however a camping trip a couple of seasons ago - my RT in front.
 
NOTE: Photo disappeared, ??

Title: Re: 95 K75 on Mod Table
Post by: Panchoplanet on April 30, 2017, 10:14:52 AM
Looking forward to developments on your mod Arktasian,  I like to use the center stand exclusively, it's European like. Always liked how in old movies  (usually brit movies) bikes are most always parked on center stand it has a retro bive.  In fact was considering removing side stand and just sporting center stand only mode.


Also liked your drawing and design skills  :2thumbup: .


Pp.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 30, 2017, 12:24:25 PM
I like center stand usage also - seems everyone at work however uses a side stand (especially the Harleys that get ridden so infrequently, its a sunny day indeed when they're used.  :beehive: )
I'm interested enough to confirm that a right side stand will eradicate start up smoke to the point I may switch it back over to the left side once she's in use (easily swapped in a minute as original pivot tab left intact) in order to test and confirm it isn't just the bike characteristics. But it will live on the right side long term.
I have a lingering mental image also of side stands that is along the lines of a ride off set up, but the other way around. It comes from the "Little Shop of Horrors" movie with Steve Martin as the evil bike riding dentist, link below

https://www.youtube.com/watch?v=bOtMizMQ6oM (https://www.youtube.com/watch?v=bOtMizMQ6oM)

Just made me laugh every-time he dis-mounts with bike in motion.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 30, 2017, 12:27:12 PM
Still note that there is no "Edit" feature allowed on my junior account here - any thoughts on how many posts required to enable that "spelling challenged" feature  :dunno

OK - answer to my own question - it is 10 posts as I have been now able to come back and correct a couple of typos.  :musicboohoo:
Title: Re: 95 K75 on Mod Table
Post by: Panchoplanet on April 30, 2017, 12:39:26 PM
Hurray!  Edit achievement enabled!  :clap:


Lol on Steve Martin clip.I have to try that dismount.  :hehehe


Pp.
Title: Re: 95 K75 on Mod Table
Post by: D.Bachtel on April 30, 2017, 01:45:30 PM
I prefer using the center stand on all of my bikes, except the ones that don't have them.

I don't use the sidestand unless I'm uncertain of being able to balance with my legs on dismount.

Do any of you,  or are any of you capable of deploying the center stand while sitting on the bike?
For me its left foot down and swing my 34" inseam up and over the bike before I even attempt it.
Maybe I'm doing it all wrong....

Don in Nipomo
Title: Re: 95 K75 on Mod Table
Post by: Laitch on April 30, 2017, 02:51:44 PM
Do any of you,  or are any of you capable of deploying the center stand while sitting on the bike?
For me its left foot down and swing my 34" inseam up and over the bike before I even attempt it.
My inseam is 34" and I always push the side stand into position with the toe of my boot before I dismount. I lower the bike slowly onto the side stand with my feet firmly planted, I dismount, then I usually raise the bike onto the center stand, especially when fueling. I started doing this to lessen chances of dropping the bike from unsteadiness when dismounting after a long time in the saddle.

I keep the clutch side stand retractor parts lubed and adjusted. Both stands remain deployed until I'm ready to move out. When I'm standing astride the bike, the side stand is retracted first then I roll the bike off the center stand with my hand ready on the brake. I'm still amazed I can do all of this successfully. I haven't polled onlookers for their opinions.
Title: Re: 95 K75 on Mod Table
Post by: Martin on April 30, 2017, 04:45:05 PM

Be aware that drain hole that allow water to drain away before you open the filler cap won't work with a right hand side stand. Be careful opening the cap after rain'
Regards Martin.
Title: Re: 95 K75 on Mod Table
Post by: Panchoplanet on April 30, 2017, 04:50:08 PM
Come on Martin, don't be a  :dunno  "Debbie Downer"  :dunno . You should do that on a dry day while using the center stand.  :2thumbup:
Title: Re: 95 K75 on Mod Table
Post by: D.Bachtel on April 30, 2017, 06:25:06 PM
I have managed to get it up on center when I park on a slight incline....

On my other bikes I can get it up on center while seated, but they're older and lower and lighter too.
BSA 650 is 390lbs, Zundapp 601 is under 500lbs and it has a ratcheting center stand with seven positions.

To me this" modern" bike can't be bullied around like the older scooters.
It's a bit cumbersome but the power and speed is a step up for me. Handling is different also. Brakes are lightyears ahead.
I do like running down the road making very little noise, feels like I'm straddling a turbine.

When you have the rear boxes fitted do you guys dismount putting all the weight on the sidestand?
I can just get my leg up and over the rumble seat with one foot on the ground.





Don in Nipomo
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on April 30, 2017, 06:33:43 PM
Martin, thanks for the mention of the fuel fill drain inherent to the left side of the filler well.
Although I use the Center stand as a rule when fueling, I'll be inspecting that potential as washing etc can also come into play.
Title: Re: 95 K75 on Mod Table
Post by: Martin on April 30, 2017, 07:25:57 PM

Arktasian I might actually do the conversion due to the camber situation from being LH drive. Pancho I was not being a Debbie downer just letting him know about the drain, nothing worse on a brick than water in the tank especially when mixed with ethanol . The water ethanol mix eventually form a corrosive mix which eats aluminium, leading to the infamous leaking tank seam.
Regards Martin.
Title: Re: 95 K75 on Mod Table
Post by: Motorhobo on May 01, 2017, 12:11:10 PM
My inseam is 34" and I always push the side stand into position with the toe of my boot before I dismount. I lower the bike slowly onto the side stand with my feet firmly planted, I dismount, then I usually raise the bike onto the center stand, especially when fueling. I started doing this to lessen chances of dropping the bike from unsteadiness when dismounting after a long time in the saddle.

I keep the clutch side stand retractor parts lubed and adjusted. Both stands remain deployed until I'm ready to move out. When I'm standing astride the bike, the side stand is retracted first then I roll the bike off the center stand with my hand ready on the brake. I'm still amazed I can do all of this successfully. I haven't polled onlookers for their opinions.

That's exactly what I do, but I'd add that I always look down at the sidestand while lowering the bike onto it it because at least once it somehow caught on my pant leg and retracted while I was lowering it almost causing a 'situation'.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 03, 2017, 08:34:34 PM
Question - how have K owners found the stock exhaust header to last?
That being the 3 or 4 exhaust outlet into 1 to the muffler inlet.
Being stainless in construction and having reasonable radius bends and collector section, I thought it would have been a long lasting item.
I just read some negative testimonial to the opposite effect where it is suggested they had a poor track record and frequent replacement potential from fractures.
Hoping for some long term owner feedback.
Title: Re: 95 K75 on Mod Table
Post by: Laitch on May 03, 2017, 08:58:37 PM
Hoping for some long term owner feedback.
There's some anecdotal evidence here (http://www.k100-forum.com/t12119-how-the-hell-do-i-put-a-k1100-exhaust-on-and-not-have-it-crack#144874) that mounting a hose clamp around all the pipes a few inches forward of the header's joint with the muffler will absorb or deflect vibration that would otherwise crack the header. The four-into-ones tend to be the crackers.
Title: Re: 95 K75 on Mod Table
Post by: The Mighty Gryphon on May 04, 2017, 08:30:19 AM
What I have seen is that it is the 4V K100RS that had the problem.  The K75 and early K100 exhaust systems seem to be pretty trouble free.

My '92 K100 has a service history of three exhaust system failures because of cracking.  I now have an early K100 exhaust on it and so far have had no trouble.
Title: Re: 95 K75 on Mod Table
Post by: Filmcamera on May 04, 2017, 10:23:11 AM
I have a 4V K100RS and my exhaust has cracked twice.  It is quick and easy to have it welded but I am definitely planning to try the clamp to see if it helps.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 04, 2017, 03:23:24 PM
Well thank you gentlemen, that would suggest a trend that is good for the models that don't have issues - but a further curiosity on what would be different for the 4 valve and cylinder models? Perhaps materials used?
Would anyone have knowledge (or offer an opinion) on the brand of stainless used on the earlier models, & my 95 vintage K75?
I would be rather surprised if it was much beyond 304, and doesn't seem to offer any magnetism on my surfaces.
 
Title: Re: 95 K75 on Mod Table
Post by: Laitch on May 04, 2017, 04:11:53 PM
Well thank you gentlemen, that would suggest a trend that is good for the models that don't have issues - but a further curiosity on what would be different for the 4 valve and cylinder models? Perhaps materials used?
It's the way pipes are configured together to join the muffler. Your K75 exhaust system won't require investigation into metallurgy, just regular usage by means of excessive riding and the abandonment of all other responsibilities.
Title: Re: 95 K75 on Mod Table
Post by: The Mighty Gryphon on May 04, 2017, 05:04:50 PM
Of all the reading I have done on this and other forums, the only exhaust that has an issue is the 4v K100RS.  I have yet to hear of a K75 or 2v K100 have a crack issue.  In fact, I can't even recall hearing of the K1100 models that use the same exhaust system having a problem.

Title: Re: 95 K75 on Mod Table
Post by: Laitch on May 04, 2017, 05:16:52 PM
In fact, I can't even recall hearing . . .
As we get older, the mind wanders, memory dims, and then there's the challenge of getting something past all the pornography crammed in there.
Title: Re: 95 K75 on Mod Table
Post by: The Mighty Gryphon on May 04, 2017, 07:00:12 PM
Laitch, have I missed an 1100 that had an exhaust cracking problem?  Do you know of some that have had problems that you're not letting onto?
Title: Re: 95 K75 on Mod Table
Post by: Laitch on May 04, 2017, 07:44:59 PM
Laitch, have I missed an 1100 that had an exhaust cracking problem?  Do you know of some that have had problems that you're not letting onto?
I'm working on my birding life list so I can't answer that right now, Gryph.
Title: Re: 95 K75 on Mod Table
Post by: Laitch on May 04, 2017, 07:56:37 PM
Laitch, have I missed an 1100 that had an exhaust cracking problem?  Do you know of some that have had problems that you're not letting onto?
Ok, Gryph. I'm caught up with the list. Turns out I'd seen them all before. Anyway, look here (http://www.k100-forum.com/t12119-how-the-hell-do-i-put-a-k1100-exhaust-on-and-not-have-it-crack).
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 04, 2017, 08:32:00 PM
It's the way pipes are configured together to join the muffler. Your K75 exhaust system won't require investigation into metallurgy, just regular usage by means of excessive riding and the abandonment of all other responsibilities.



Great.  However (& as some may have suspected) there are alterior motives behind the questions on metal specs. Although my plan is to run this little gem and log Motronic behaviour during our first season together, the development of a "one of" forced induction system includes the exhaust feed and I'd rather like to take advantage of the stock headers toward the turbine inlet. The increase heat can wrec havoc on less noble alloys - it appears worthy of the task initially. Almost invariably my first attempts work but beckon enhancement and revision.
It's a good thing I have some time for laying this out.
Apologies offered again in that this is the beginning stage and could be a couple of seasons in the making.

Title: Re: 95 K75 on Mod Table
Post by: Laitch on May 05, 2017, 05:43:08 AM
Apologies offered again in that this is the beginning stage and could be a couple of seasons in the making.
That's ok. I'll try to find a hobby to occupy my time between installments.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 09, 2017, 11:42:18 AM
A Mention of some preliminary design work and planning. Been chatting with Wmax who has run his K75 with an MS system on board, fuel control only.
Although I thought I would run my bike in stock form to log operations initially, I've changed my mind on that and am probably going to continue to rip into things and start building parts while she is up on the "mod" table.
It will start however with the logic of how ignition control is handled and type and location of tone wheel and sensor utilized.
I'll add photos as things manifest.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 14, 2017, 05:54:30 PM
I've established the game plan for the ignition pickups, in the MS world this is a major stumbling block where low balling things can make life on your bike miserable. I'll fashion a discreet revised cover to replace the stock small diameter hall sensor sector - for a 4" dia 36/1 tone wheel & VR sensor plus a one toothed cam &VR sensor ( which will be on the cam - final design still in limbo). In surveying that out, I put a BOM list together for some items I don't have yet ( years ago when I did my R100RT up I bought two of everything having some funds available at that time, although surprisingly cheap stuff to purchase).
I seem to be breaking the promise I made myself - for this to be a part time, long term project that can present some shop fun for a few years. At the present rate that's not going to happen :dunno2:
For fun, thought I'd chart possible locations for the turbo and air to air cooler. It also clarified that I won't be using MAF (hence the air flow chamber) so I ripped that, filter assembly, and balloon like inlet manifold out from on top of engine. Wow, does that ever open things up and present some significant real estate for things to be fit out.
Title: Re: 95 K75 on Mod Table
Post by: racket on May 18, 2017, 04:58:39 PM
Interested in the MS details when you work that out  :yes .

By the way, there's just barely enough room for a supercharger if you remove the stock airbox and "balloon" intake.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 18, 2017, 06:02:57 PM
Interested in the MS details when you work that out  :yes .

By the way, there's just barely enough room for a supercharger if you remove the stock airbox and "balloon" intake.

I feel guilty to have posted about this project before really having the wheels on the ground so to speak (in fact is on what used to be grandma's kitchen table which is now the serious project zone in my basement workshop).
Regardless, I have both a healthy respect for what might prove challenging with the MS conversion, and a pretty well developed game plan which I will post a list of fairly soon here. One of the more challenging aspects tends to be developing your tune files and I already have an MSQ drawn up that I'm confident with, she'll fire up on 1st crack. That's a way's off.

Sounds like someone has been contemplating a blower up top?
I am impressed with the room that has developed with those items removed and I'll probably removed the throttle bodies for a good clean up, plus a throttle position sensor to reside where the on/off switch was mounted ( :clap:)

Riding season is about to start up here however (going to plate tonight for the RT) so things may quiet for a while.

Title: Re: 95 K75 on Mod Table
Post by: wmax351 on May 19, 2017, 12:28:15 PM
Interested in the MS details when you work that out  :yes .

By the way, there's just barely enough room for a supercharger if you remove the stock airbox and "balloon" intake.


That would be cool. There's a guy that has made some supercharged original goldwings.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 19, 2017, 03:42:23 PM
For sure, although I'm a big fan of the "free energy" a turbo enjoys off the exhaust rather than a crankshaft shive.
I have a buddy here at the West Coast that has Turbo'd his Gold Wing, an 1800cc. I did a trip up into the interior of BC last summer with him & in hind sight - I believe he loves the route as it is extremely steep, double lane through the mountains and very curvy to boot. Its kind of a rolling dyno for him and he took off like a shot as we started climbing. I tried to keep up to him with my 83 R100RT(turbo) and basically ran out of suspension and nerve - well, after hitting a few rough spots on steep sweepers where the "Rubber Cow" suspension of the airheads seemed to wake up and told me I would be wise to slow down a tad. :nono
Title: Re: 95 K75 on Mod Table
Post by: racket on May 19, 2017, 03:52:02 PM
For sure, although I'm a big fan of the "free energy" a turbo enjoys off the exhaust rather than a crankshaft shive.

Yeah... but a supercharger just seems more American and muscly. Not like those dignified, refined, and complex little exhaust driven turbo chargers. Anyways (and people who always ask what performance mods you can do to K100, listen up), after you go to forced induction and an MS system, you could probably (with a lot of time, effort, and money) convert it to run methanol. This would make an interesting Bonneville type project
Title: Re: 95 K75 on Mod Table
Post by: wmax351 on May 19, 2017, 04:15:34 PM
Advantage of a supercharger is the lack of lag that is present in a turbo, which is what doomed the factory turbo bikes.


Kawasaki has a really cool 2-speed centrifugal supercharger on one of their new bikes. https://en.wikipedia.org/wiki/Kawasaki_Ninja_H2
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 19, 2017, 04:52:49 PM
Yeah... but a supercharger just seems more American and muscly. Not like those dignified, refined, and complex little exhaust driven turbo chargers. Anyways (and people who always ask what performance mods you can do to K100, listen up), after you go to forced induction and an MS system, you could probably (with a lot of time, effort, and money) convert it to run methanol. This would make an interesting Bonneville type project

If it counts at all, I run a 50/50 blend of water meth for the cooling of the induction charge when it seems necessary to run higher levels of boost  :riding: (I have it turn on above 7psi). That's a straight injection through ultra fine orificed nozzles however and there are no moving parts to seize up on injectors and such. The solenoid valves are SS and happy with meth running through them.
The other thing - I don't have a lot of money for my projects  :musicboohoo:
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 19, 2017, 05:02:38 PM
Advantage of a supercharger is the lack of lag that is present in a turbo, which is what doomed the factory turbo bikes.


Kawasaki has a really cool 2-speed centrifugal supercharger on one of their new bikes. https://en.wikipedia.org/wiki/Kawasaki_Ninja_H2

The advantage of a well matched turbocharger is that it provides efficient power gain (although the superchargers are climbing in their efficiency and "heating" behaviour) - when properly matched the "Lag Concern" is really not something to worry about. I don't have lag on the RT, in fact it behaves exactly like it did when it was natural, but takes off much more aggressively (as anticipated) if the roll on is more ambitious. This is uniform enough I don't worry about throttle operation in curves etc.
There is a "Twin Turbo" project that came up from the "Boxer Metal" shop - that is a very good example of a system most likely to have horrible lag. The bike looked perfect and artistic, but the turbos were way too large (even to a casual observer on the net) and would most likely take 5 miles on full throttle to wind up, if at all  :nono
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 27, 2017, 08:56:22 PM
Point of consideration on the "ABS" system and opinions welcomed.
I am reviewing the bike wiring harness and drawing up a work schematic to aide in removal of various electrical components. I've dropped the "Log the Motronic" plan and will remove it and other items that the MS ECU will control (as creating an msq or program template will be one of the easier aspects). I've heard mixed reviews on the ABS performance, and poor reviews on its robustness and cost per mile operation ratio.
So - looking for feedback on yay/nay before I jump towards removal.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on May 30, 2017, 10:11:06 AM
Did a site search, lots of posts on the topic.
The ABS will come off.  the wiring harness will reduce substantially with roughly half the high profile components like "Ignition Control" and "Fuel Injection Control" cases being pulled, along with numerous satellite sensors and devices not required. The MS has its own to take their place. So, the ABS module being removed will afford some nice real estate back in the tail section as well.
Besides which, I like to learn the behaviour of and use threshold braking.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on June 07, 2017, 09:15:03 AM
Not sure I missed something here on Motobricks, but some posts that were on my thread have vanished.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on June 07, 2017, 05:05:22 PM
Seems posts either disappear or get removed
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on June 19, 2017, 11:05:56 PM
So I have continued to tinker on the bike, I've charted the turbo location close enough to put together a material list for plumbing items not already on hand. I needed some 321 stainless tubing (elbows and straight portions in a couple of smaller dia sizes) - 321 is the superior choice for the high heat zones containing alloy additions like titanium. A very reasonable source in California is "AceRace" and package will arrive Wednesday. I've mapped out the charge air cooler (under fuel tank) and oil feed and drain strategies as well small coolant lines to/from the cartridge.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on June 25, 2017, 05:50:45 PM
I'm seeing other posts surface, some rather old and perhaps interrupted - where fuel/ ignition management is being considered, and in some cases some rather aggressive modifications or grafting of stock parts to gain either a unique project - and/or higher output on the ole brick are mentioned/ attempted.
The mystery surrounding Megasquirt is basically uneccessary. If you go to that site and forums there are endless projects that are successful in all walks of life.  One common question: "Does an MS system get to the point you just ride the bike and not worry or deal with tune or issues, or?"  That answer I would offer, is Yes!   Based on no less challenging of a project than my 83 airhead that started life with Bing Carbs and no turbo of course. In its fully modified format & being somewhat of a horrific sleeper to other modern bikes (or Harleys which I love to hunt), it is a daily ride, been all over this province and major areas of the US with nary an issue for years.
wmax351 has offered a pretty clear explanation of Microsquirt, but the mystic remains (and no doubt fear and uncertainty). I'll speak of Microsquirt, as it is basically the smaller version of Megasquirt with various minor differences etc.
Simply put, it is a complex but highly affordable approach to full management of existing fuel & ignition systems and then a whole lot more (there are many additional items and methods of running it including a host of additional components such as water/meth injection control, boost modulation, idle valve control, sequential ignition/ coil on plug, canbus control, the list would be too long here) - but there is a need to follow the amply provided manual and tech material to be able to establish everything - unless you are already an electronic wizard (most of us including myself are not). This is a big point. If you follow the directions, you can build the kit onto your bike, create an "MSQ" (tune) that is close enough to ride on and finish utilizing logging (or some dyno time). That and it is ridiculously cheap in the grand scheme of things - plus if you wish to cruise your local autowreckers you can pull in/ recycle numerous parts for additional savings that can continue to live a long life.
There are forums over at Mega/ Micro squirt that serve to help people very nicely should an issue or anomally surface. Nuff said  :lets-eat:
I'm playing with the exhaust, thought I'd tack on the performance map of my little Mitsubishi Turbo. This unit will allow the 75, perhaps a 100 to run excellent without lag, without fear of burnouts coming out of corners, quite well rounded behaviour.
Sorry if the map is upside down, I don't have Adobe on the very old home computer and it won't let me invert. If you haven't played with turbo's, you can plot the info on this map into a performance file (RB Racing has several that allow you to imput engine info and determing flow rates, behaviour with the info on the map). If you don't run these numbers and confirm performance ahead of time, you very well may end up with a poorly matched unit and have the undesireables (lag, choke, surge, blah, blah.)
 
Title: Re: 95 K75 on Mod Table
Post by: racket on June 25, 2017, 05:54:02 PM
One big obstacle is that microsquirt is great but most of those systems require a fabricated crank trigger wheel and other components to really make it worth it (and get more horsepower). Otherwise you're just trading in one basic system for another. 


Sent from my iPhone using Tapatalk
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on June 25, 2017, 06:01:44 PM
A crank trigger that will provide a proper signal and sync for the MS is an undeniable requirement. There are many, many types of tone wheel & sensor patterns that are supported by the various firmwares and programming. Why would that be such a big deal when people are considering removing an old Motronic from one cc'd engine plus other parts and cobble them onto another engine - all to hopefully gain a properly running engine that has very little in the way of adjustability and correction for know issues?
A tone wheel add on for the K75/100 engine will not be that hard - I haven't built it yet but will provide my drawings and detail here in case anyone is interested. I will use a 36 tooth wheel with one missing, that costs $25us. I like VR sensors and those are all over your auto wreckers or parts stores cheap. Stay tuned.
Guess the point here is, this is not a plug'n play system but equally is rather kindergarten in comparison to modifications and machine work that many offer here on their upgrading and wild ride creations.
Regardless, comments and discussion welcomed.
Title: Re: 95 K75 on Mod Table
Post by: tagaz on June 26, 2017, 12:27:18 AM
i am/will follow this very interesting project
Title: Re: 95 K75 on Mod Table
Post by: Laitch on June 26, 2017, 08:25:40 AM
Guess the point here is, this is not a plug'n play system but equally is rather kindergarten in comparison to modifications and machine work that many offer here on their upgrading and wild ride creations.
Regardless, comments and discussion welcomed.
If it were easier than the many modifications viewed on this site, I suspect it would be done more often here. I'm interested in your progress and outcome as compared with wmax351's experience.
Title: Re: 95 K75 on Mod Table
Post by: racket on June 26, 2017, 09:16:30 AM
I agree with Laitch. Cutting and welding frame pieces is one thing, but setting up an alternative and more modern fuel injection system is a whole different beast. I think the Microsquirt is almost plug and play, but like I said, you'd basically be trading one system for an equal one. The worthwhile improvements come from adding more sensors, creating a crank trigger, getting into the whole alpha-n thing... the list goes on. Basically what I'm saying is it's hard, I've always wanted to do it, and you seem like you're smart enough to put together a great How To guide so we're all rooting for you! If you can make your own system and crank trigger and all the little parts, you could probably sell kits to cafe racer builders. It would also be really funny to see someone on a K100LT with a modern fuel injection roaring down the road with 25+ extra hp.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on June 26, 2017, 10:55:18 AM
You gentlemen will get the feeling I'm trying to convince others to try out MS  :nono (there may be some truth in that  :yes)
Working with electrical systems & control is a tad different than frame fab or suspension upgrading as an example. However, based on projects I've viewed here I'd say there is a very high level of creative ability to take on "outside the box" tasks and succeed in a dramatic fashion.
MS and a successful upgrade is really no different, where you pay attention to detail most where it counts. The K bikes being fuel injected are much easier candidates than carbureted engines for a conversion, and already have some sensors in place that can be utilized. The big MAF flap could be integrated (MAF is a popular tool interestingly), I've already removed it for alternate air flow strategy - and it will be "Speed Density" fueling rather than Alpha-N (but that's a turbo thing and I need the room taken up by the stock air chamber and filter/flap box). Adding more sensors can be as easy as tapping 3/8fpt or welding scullies, wiring and relays is a matter of being neat and diligent.
So, you might hone in on adding a crank (& in my case cam) trigger, and potential difficulties :curvy-road.  The stock "Twin Hall" assembly on the front of the timing case doesn't provide a signal that MS currently supports. wmax351 had started to design a small version tone wheel & sensor housing, perhaps that looks intimidating to readers? My approach - consider it in bites and calm forward strategy. With all the stock parts removed you have a very nice available spigot with which to mount a very small drive hub, the 36/1 wheel being 4" OD requires a rework for a back plate and cover. Still, I see it in my mind and will post the offspring here in due course once created. I'm not a machinist, spent many years utilizing a drill press, hack saw's and hand files - till recent completion of a resto on a lathe and milling machine (see me now being very  :clap:) I'd still make said parts by hand without those, or get a friend to spin out the little bits if I didn't have a place to work on things. Guess I'm saying it isn't that hard.
Tuning, there are road blocks for sure but again if the bloody manual is read (and re-read) and then actually followed, it seems to all fall into place. Over on the MS forums, there are examples of guys having upfitted an old car over a weekend for example, and had running with a reasonable tune on the next day.
All rather speculative I'm sure you're all thinking till some proof hits these pages - I agree on that so as previously mentioned, stay tuned. But enjoying the discussion.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on July 11, 2017, 12:16:36 PM
Post removed by Arktasian

 
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on July 27, 2017, 09:08:44 AM
A modicum of progress, here is the exhaust feed manifold. Connects onto the stock 3 into 1 manifold and leads up into zone previously occupied by battery (which will be an AGM residing in now vacant tail section compartment as all previous ecu's removed.)
Except for the turbine mount flange which is 316ss, I've used 321ss which has titanium content and handles increased exhaust stream heat loads very well. We'll see how the stock 3/1 section stands up as although it has no magnetism which would suggest food grade 316 or better I wouldn't be surprised if its closer to 309. The diameter shrinks on the last run as you can see, ensuring the velocity remains peak entering the turbine. This will be close quarters to the rear tire and clutch release arm, so I'll be shielding with a ceramic shaped blanket. Should have some proper photos to post up in due course as it is all in place.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on August 06, 2017, 11:30:49 AM
Coolant adaptor below.
 

* IMG_2649.JPG (85.44 kB . 640x480 - viewed 959 times)

Title: Re: 95 K75 on Mod Table
Post by: Arktasian on August 28, 2017, 10:36:04 AM
Sketch added back in  :dunno2:

On the below sketch, the angle should read 31 degrees (adjusted for a better lean Feb/ 2024)
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on September 01, 2017, 09:04:54 PM
Removed by Arktasian
 
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on September 10, 2017, 09:48:18 PM
Removed by Arktasian
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on September 11, 2017, 08:19:50 PM
 comments here didn't really contribute much to the ongoing procedures - so I've edited.

Title: Re: 95 K75 on Mod Table
Post by: Arktasian on September 16, 2017, 10:23:17 AM
This is another edit, no point debating aliens rights etc. when the original intent was to share bike tech.
Title: Re: 95 K75 on Mod Table
Post by: ^Adrninistrator on September 16, 2017, 11:48:31 AM
Arktasian:

You are the one who refereed to "Project K Bikes" as the "Adulterated Sector".

You then have been modifying posts by removing content.  I have them archived so it really does not matter.

I spoke to mystic red about the matter.  He said live and let live.  You can modify your posts by removing content or you can share your experience here, it's your choice.

Live and let live.
 
Title: Re: 95 K75 on Mod Table
Post by: Blue on September 16, 2017, 11:58:25 AM
I want to tear all that out and go with the MS and replicate what you are doing.  I am patiently waiting for your project to be complete because I don't know where to start and have no idea how to get it done and tuned.

If you decide to stop posting here, please PM me the place you are going to share your MS build.
Title: Re: 95 K75 on Mod Table
Post by: Arktasian on September 17, 2017, 07:33:37 PM
I want to tear all that out and go with the MS and replicate what you are doing.  I am patiently waiting for your project to be complete because I don't know where to start and have no idea how to get it done and tuned.

If you decide to stop posting here, please PM me the place you are going to share your MS build.


Greetings "Blue", PM sent.
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: Blue on May 04, 2018, 10:49:06 AM
Where are you at on this project ?

I'm negotiating a high mileage K75 from Minnesota.
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: Arktasian on May 04, 2018, 09:21:39 PM
Hello Blue - good to hear your keeping the project in mind.
For my 75, a number of things have interrupted shop time but following is the project status:
- crank sensor utilizing a 36/1 tone wheel designs set.
- cam position ( for sequential ignition & fuel) will be developed via map signal on cylinder #1 which is a reliable strategy via MicroSquirt, but not yet bench test ( pretty confident in that)
- turbo manifold feed complete utilizing 321SS, items like mount bracket, exit plumbing, and a hollowed stock muffler set in design stage.
- turbo cartridge lube circuit and cooling lines designed and materials ready.
-  charge air cooler and inlet manifold “Log” set in design phase, not built.
- ECU location set and alternate battery location chosen.
- ECU flashed with an MSQ created from table generators and known ( to me) reasonable settings.
So, as you can see, a lot of planning but very little other forward movement from previous considerations.
 If your  seriously entertaining doing one up, I’d say go for it & I can help get through the new stuff if you beat me to it.
Regards,
Lorne
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: Arktasian on May 28, 2018, 04:23:45 PM
As mentioned above, this project has been slow in moving forward, although I decided to build the crank sensor assembly involving some aluminum fab/ welding after encountering a pinhole leak on another project item that holds boxer engine oil pressure in check. It sprung a leak after a low psi oil system "precharge" routine (despite being two seasons old and always dry as a bone).
Rather than machining a solid billet aluminum housing I have opted to fabricate - more by reason of minimal project fund expenditure than excellence.
I'll leave a few photos of the initial bits, and then again once its completed.


* 61kmB2vA0TL__SL1000_.jpg (39.76 kB . 720x576 - viewed 1061 times)
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: The Mighty Gryphon on May 28, 2018, 08:49:01 PM
Where ya puttin' the Leslie?
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: Arktasian on May 29, 2018, 08:57:59 AM
Mighty Gryphon, what is that?
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: The Mighty Gryphon on May 29, 2018, 10:06:42 AM
The Leslie is a Hammond Organ speaker; it goes with the tone wheel.  It's what makes that distinctive organ sound of the 60's and early 70's blues and rock.  I guess you have to be a musician collecting Social Security to know what it is.  A lot of us suffered through bands with organists and their 400 pound instruments.
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: Arktasian on May 29, 2018, 01:23:16 PM
I actually considered speakers, but wasn't aware of the signal scrotator aspect on those.
And I prefer to listen to the bike and ambient sounds from your surroundings, rather than blasting tunes ( for instance for those on Harley's, usually in competition with exaggerated exhaust blatting noises)
Actually, not too far behind in the "Social Security" collection phase.

In Edit, I'm used to funky spell correct activity, but the above takes things to a disturbing new level.
Title: Re: Arktasian's 95 K75 on Mod Table
Post by: Arktasian on August 10, 2018, 09:21:31 AM
Below is the throttle position sensor I've married to the throttle body - in place of the on/off switch. That's a fairly important ingredient for MS to mount a successful reign of control over all that power cool shades
Been skimping at the bone yard again, this one is from a 2001 Dodge Dakota, Delphi p/n SS10406 & required a modicum of shaft massage to fit (& dirt cheap new)
 [ Invalid Attachment ]
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Jim K in PA on October 30, 2018, 06:00:15 PM
So have you done any dyno pulls yet?  :D
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on October 31, 2018, 09:09:26 AM
Greetings Jim, welcome to the fold & congrats on your recent K acquisition. Have you introduced it here yet at "The Brick"?
There has been a modicum of progress on the K75 microsquirt systems etc, but main problem in part due to a conflict in reasons for having the bike. Spreading the work on it out over those winter months or evenings when distraction is required is in contravention of the pressure to get her done which is the normal approach here. I'm trying to take an "Alfred E Newman" approach and not worry about it.
I have been building more bits for the 36/1 tone or chopper wheel ignition system that needs to take the place of the twin hall unit up front. Our engines offer many excellent opportunities to apply unique debauchery and alteration, as I'm sure is the default reception.  I'll post up photos of items as they are finished - but suffice it to say I've been having fun playing on lathe and mill machines.
Airhead is still going through some procedures, "but I didn't mention that".
Cheers,
Lorne.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Jim K in PA on October 31, 2018, 08:04:26 PM
Hey Lorne.  Nope, that was my first post here.  This is my second.  I'll work up an intro soon.  Just signed up.

I'm interested in your chopper wheel adapters, selfishly so, since I will need the same adapters for my conversion.  I would like to get a few miles on mine before the MS changeover, but depending on winter progress on my airhead, and the available time, I may dive in before spring.  It will be a training project for that other project we have discussed.   :bmwsmile

Greetings Jim, welcome to the fold & congrats on your recent K acquisition. Have you introduced it here yet at "The Brick"?
There has been a modicum of progress on the K75 microsquirt systems etc, but main problem in part due to a conflict in reasons for having the bike. Spreading the work on it out over those winter months or evenings when distraction is required is in contravention of the pressure to get her done which is the normal approach here. I'm trying to take an "Alfred E Newman" approach and not worry about it.
I have been building more bits for the 36/1 tone or chopper wheel ignition system that needs to take the place of the twin hall unit up front. Our engines offer many excellent opportunities to apply unique debauchery and alteration, as I'm sure is the default reception.  I'll post up photos of items as they are finished - but suffice it to say I've been having fun playing on lathe and mill machines.
Airhead is still going through some procedures, "but I didn't mention that".
Cheers,
Lorne.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on November 08, 2019, 10:02:22 AM
When I went to post, this below popped up:
Warning: this topic has not been posted in for at least 180 days.
Unless you're sure you want to reply, please consider starting a new topic.

That's fair. Hello  :alien 's
A build should never take this long. I decided to continue working on the little K, and in answer to your question Jim, I will share with you my chopper wheel arrangements (plural, as sequential control involves both crank and cam recognition).
The pictured 36-1 wheel would be solid but its too large.
I've done a little further investigation and find a 12 "non missing tooth" wheel will work very well with a single tooth cam wheel. That will fit within the stock pickup cavity with flat cover back on top. I'm sticking with VR sensors for their superior heat handling characteristics, but will condition the signal for ultra quick sync with one of Jean's "Dual V2 V2.1"  from jbperformance.com. 
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Jim K in PA on November 08, 2019, 10:35:44 AM
Frightening how time compresses with age, and time.  :(

A year gone by and no progress on my K.  Nothing.  But huge progress made on the restoration of the early 19th century farmhouse that we live in.  So, tradeoffs . . .

Keep the faith, my fellow alien.  :D
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 23, 2020, 10:05:28 AM

* IMG_2114.JPG (42.75 kB . 432x576 - viewed 873 times)

Small progress continues, the smaller 12 tooth tone wheel will reside along with its small VR sensor with the stock cover and not change the look of things much.


* IMG_2113.JPG (37.18 kB . 432x576 - viewed 838 times)

The exhaust however, does mix it up somewhat. If you figure out how this works you gain a gold star.


* IMG_2094.JPG (46.69 kB . 768x576 - viewed 826 times)

I'm going to be triggering the computer with the 12 tooth wheel on crank, and a single tooth on the end of probably the top camshaft. Anyone able to offer what the small frost plug in the center of the end is for? (perhaps oil gallery internally, I haven't learned enough about the engine to suss that out yet).
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Jim K in PA on January 23, 2020, 11:26:57 AM
Looks like cams are pressurized.

(http://www.bmw-k100rt-page.eu/manual/FuelOil/Images/fig52_oilsystem.jpg)
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 23, 2020, 01:30:59 PM
Thank you kindly Jim, I'll save the prints for these small bits in case you want to MS yours  :popcorm
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Ben_G on April 17, 2020, 04:20:18 AM
Just seen this post, I've been looking into this, on and off for a while now.
I've started to redesign the crank sensor and come up with this, it's based off the BSK speedworks design, unfortunately he won't sell the crank sensor on it's own so I made it myself.
I need to 3d print the parts out to make sure I've got everything in the right place.
It's using a 50mm 36-1 gear, I'm not sure if it's too small to work properly but you can buy it as an off the shelf item so it must work for someone.
I got the dimensions of a random sensor, I'm not sure what sensor would be ideal for, does anyone know?

https://img.photobucket.com/albums/v26/Beenie1600/CPS_zpslm55uoav.jpg (https://img.photobucket.com/albums/v26/Beenie1600/CPS_zpslm55uoav.jpg)
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Ben_G on April 17, 2020, 04:22:11 AM
(https://img.photobucket.com/albums/v26/Beenie1600/CPS_zpslm55uoav.jpg)
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on April 21, 2020, 04:04:55 PM
Ben, most Hall Effect or VR sensors which might be used to register with the tone wheel teeth are designed to be of a smaller diameter "sensing probe" than the tooth itself. This isn't a hard fast rule as I have a 36 toothed wheel, one missing that are sharp ends like a saw blade and that works quite well with a VR sensor. Best bet is to test the combination you're interested in using. Is this an MS project, as you can then utilize a "Stim" device to perform all bench testing in the comfort of your shop, rather than proving it is buggy while stranded at the side of the road.  The question that should be raised is this, how many teeth do you need? Is this for an MS project as they have specific tone wheel arrangements that work, other combinations don't.
The small 12 tooth wheel I've chosen is particular to gaining full ecu control on a K75 platform, 3 cylinders add extra challenge but is doable. I've tested that on a variable speed drill press and it works fine with a single tooth cam sensor and all manner of rpm's. That allows "sequential" ignition and fuel injection timing which is superior in efficiency and operation than untimed injection on wasted spark. (I found an easy point for the single tooth cam signal up front, will possibly post it here later)
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Ben_G on April 27, 2020, 03:30:00 AM
I'm interested to hear about your cam angle sensor!

I've scrapped my original idea, I've been speaking to some people over on the speeduino forum and we've come up with an idea to modify the original trigger wheel into a 12-1 wheel by simply cutting 10 more windows into it, this utilises one of the original sensors as well. One of the guys has even got it to work on a test bench.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on April 27, 2020, 01:15:18 PM
Hello Ben,

Modifying the original Hall sensor cup with extra windows sounds like a marvelous concept. Yes, pretesting with your ecu is a needed step to ensure it will be stable right from cranking to top rpm's.
I don't have any photos here of the cam sensor I've rigged, but can describe it.  I abandoned the idea of adding or machining something to the rear end of one of the cams, and instead have located a VR sensor at the front timing cover that registers with the top cam gear. The timing cover doesn't have a "level playing field" so I fabricated a very small aluminum wedge to allow proper mounting angle and easy "one screw" retention. It isn't registering on the gear as such, but I've fashioned a stainless circular plate that sandwiches behind the retention bolt. I plotted sensor location in advance to jive with the hole circles on that gear and then have two allen bolts affixed to the plate at 180 opposing to maintain balance. One is ferrous (the signal tooth) and the other is 316SS (for balance). That plate is about 18 gauge, and the nylock nuts reside nicely on the back side within any given opposite gear holes. This allows a measure of adjustment on the single tooth which for the MS code choice requires that tooth not line up with any of the 12 crank teeth (the 3 cylinder design adds a level of challenge when you are seeking sequential ignition and injection - which I am). Sounds complex but actually very simple and minimal modifications to original kit and look.
I will post a photo of the set up when I have a chance.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on June 27, 2020, 06:17:10 PM
Covid driven news flash - placed an order with Motobins subsequent to scoring some funds helping a friend service his MCI motorhome conversion (I repowered it for him with a Cat 3406E "King on the Hill" some 18 years ago now). His rational is to vacation comfortably within BC given travel restrictions.
That effectively thwarts any excuses to "not be tinkering" on the K75  :nono2:
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Flatblackdime on June 30, 2020, 01:49:40 AM
Why not make a 36-1 wheel at the camshaft location? You already have a sensor there and you won't have high rpm timing drift as it's chain driven. No need for any of the space limited crank sensor with a registered cam position.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on June 30, 2020, 10:29:09 AM
Why not make a 36-1 wheel at the camshaft location? You already have a sensor there and you won't have high rpm timing drift as it's chain driven. No need for any of the space limited crank sensor with a registered cam position.

As per Megasquirt recommendations, its best to avoid the jitter that may develop in chain driven cams and such, but more importantly, for a 3 cylinder engine which is a touch uncommon amongst the squirting community, and with a wish for sequential control, wheel and code options seem limited.
There is however a code variation that supports a 12 tooth wheel on the crank, and a single tooth on the cam. That will allow the highest rpm's I'll be developing on this daily rider type bike.
But that's academic as I have the parts made and they were quite simple and inexpensive. I did a test of the VR sensors I'll be using on my test bench set up, and got the results expected.
Thanks for commenting. Are you an MS participant?
Regards, Lorne
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Flatblackdime on July 03, 2020, 10:41:31 PM
I didn't know that about MS and chain driven cams! Too bad, that would be a bit easier from a packaging perspective.

I too am working on an efi conversion project using speeduino instead of MS. Going to run fuel only triggered off the CDI box RPM signal and likely just do a straight alpha-n tune with temperature/ baro correction. I'd eventually like to run ignition as well with some GM LS2 coils but will likely just batch fire and run it crank-triggered as half of a 6cyl.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on July 06, 2020, 10:35:13 AM
Seems the Speeduino is a reputable product that hasn't attempted to pirate tech from the Mega Squirt developers - I'm inclined to try one out next project.
Sounds good, hope you post up results once you have things running!
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on September 12, 2020, 05:41:40 PM
Further to above comments, I’ve spent a bit of time at the “Speeduino” forums and find several K75 owners have initiated projects to replace stock ecu control using this novel product. It looks to be quite up to the task at a fraction of what the cost, & simpler than MS. However I’m not seeing any “Completed” posts but also a trend towards retaining original simple twin Halls or avoid implementing a larger count tone wheel. I suspect that hampers results given the different requirements of both those and the MS ecu’s.
Perhaps there can be a market for a simple crankshaft adaptor to allow the plug and play solution that keeps coming up.
Once I’m running, perhaps I’ll test the waters on that interest.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Flatblackdime on September 12, 2020, 05:50:40 PM
The best option I've seen yet for the trigger wheel is to convert a stock K100 single window hall effect cup into a 12+1 trigger. The K100 thread on the speeduino forum has it pretty well documented (https://speeduino.com/forum/viewtopic.php?f=18&t=3878&start=170 (https://speeduino.com/forum/viewtopic.php?f=18&t=3878&start=170)). I've got mine rough cut and just have to spend some dremel time to get the windows cleaned up. I'd love to have a stamping die for these so I could have some blanks laser cut and them smoosh them out in my shop press.

I'll try to keep everyone updated here on my progress. There is no reason that this setup wont work on our bikes, the crank trigger is the only real hurdle here.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on September 12, 2020, 10:41:16 PM
Thanks for the links - more reading and you’ve done some nice design work there.
Although machining the extra windows into a stock dish is a wonderful idea and key ingredient towards a simple plug and play approach - getting it done appears to be rather rough. Someone will probably come up with a solid machining or fashioning technique that will solve this. However, the MS manual for a certain sector (MS2Extra) describes a 12 tooth crank wheel with a single cam tooth as very precise but a better starter for engines that have some compression resonance on cranking (my understanding- better than 12-1).
In contrast, I’m using a $12.00 crank sprocket that resides in the stock recess with a small adaptor, VR sensor mounts through the front cover. My single tooth cam wheel is dead simple “bolt on stuff” and it’s VR sensor mounts through a simple hole on the timing cover ( has O ring)
I’ll post some photos shortly.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on August 11, 2021, 12:37:03 PM
Over the 180 day per posting again. boohoo
The K75 project awaits patiently as I'm navigating life "stuff" plus anticipating retirement  112350
That should kick start things for some updates.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on September 05, 2021, 10:34:14 AM
Keeping this forum alive - with the odd post. I know, everyone is out riding & too busy to write.
My project updates will resume (promises promises), time is going to open up for that. icon_cheers
I did want to post about another bloke from California (WIZ, J.C.) that suddenly popped up on ADV with announcement of his work on his K100GSA (its under "Some Assembly Required" if interested in viewing about it). Hopefully I haven't broken any rules yet, but what I wanted to mention is that he applied a Megasquirt "MS3 Pro" for full ecu control, all the usual sensors and such but he went with an "off the shelf" crank sensor kit from BSK Speedworks (36/1 style).
He has this bike running and close to a full tune, never joined the MS forums or raised any questions.
There - a testimonial that it can be that easy!
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Laitch on September 05, 2021, 12:30:32 PM
Hopefully I haven't broken any rules yet, but what I wanted to mention is that he applied a Megasquirt "MS3 Pro" for full ecu control, all the usual sensors and such but he went with an "off the shelf" crank sensor kit from BSK Speedworks (36/1 style).
You haven't broken any rules, Arktasian, and can always provide a link to relevant posts elsewhere. This is the link to the ADV post (https://advrider.com/f/threads/bmw-k100gsa-project.1518237/).
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 08, 2022, 11:42:41 AM
Time for a well deserved update - this is after all a fill in project meant to provide stress relief when required.
Up here in the Fraser Valley of BC, we've had more than our share of stress, starting with the radical heat dome and record setting summer high temperatures, followed by out of control fires. A brief time where riding was actually possible ended as record setting rain flooded our entire valley and destroyed every highway and mountain pass leading in/ out of Dodge. Vast devastation. Now, concurrent snow storms, freezing rain, and all manner of severe winter is like cake icing - and did I mention it is normally just a mild/ rainy climate? Surely there must be some bad behavior by locals to bring this on - but not by reason of this project which is well mannered and being slowly developed to maintain close to original bike appearance.
Some photos, just small chapters of the progress:

* Oil and Coolant Pressure Feeds.JPG (57.44 kB . 768x576 - viewed 657 times)
Formed high pressure tubing for security. I believe I'll form a small guard to mount discretely just in front of connection points. Coolant feed is to the center section.


* Banjo for Oil Feed and Sensor.JPG (66.23 kB . 768x576 - viewed 659 times)
Fabbed this little "banjo" to maintain stock pressure sensor while providing for the oil feed circuit to cartridge.


* Inlet Runner.JPG (40.58 kB . 768x576 - viewed 650 times)
Inlet feed from the air to air, will have an air temperature sensor on the 3/8" fpt port.


* Charge Air Cooler.JPG (72.26 kB . 768x576 - viewed 605 times)
The charge air cooler will sit discretely below tank, I'm currently fashioning some tins to allow a small 3" bilge fan to force cool ambient air thru it and onward over the marine heat blanket that will wrap the turbine housing and exit plumbing. Hot air to the rear left side.


* G.A..JPG (78.71 kB . 768x576 - viewed 638 times)
Bit of a general arrangement view. Very unfinished.


* B.O.V off Charge Air.JPG (44.45 kB . 768x576 - viewed 650 times)
A Bosch blow off valve with a Motobins filter will hide on the right side. I'm going to plumb the crankcase vent through a small cleanable "externally vented" filter assembly, not showing in any photos, you can't connect to inlet or vapours will contaminate cooler etc.


* Air Filter Canister.JPG (43.69 kB . 768x576 - viewed 651 times)
Transitioning to a round, canister encased air filter that will sit roughly where one of the ABS pumps had been (those have been removed).

Cheers, Lorne





Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 31, 2022, 08:22:46 PM
Quiet as church mice on the forum. That's okay, things take to their own pace and rhythm. Over on the ADV forums, ownership has changed (revenue/ advertisement/ veiwership based) and members are chatting about the "what ifs" we need to find another site to hang our hats (mostly those are die hard bmw airhead owners, but we'll see what develops)
Suffice it to say I'm working on the "K75",   now developing some black satin clad exhaust/ turbo heat blankets from some professional marine grade supplies I scored over the years (the style that frequents a marine craft engine room and that you can lean against without realizing "that's a really hot pipe" that I'm leaning against. In other words, not just mummy wrap, and the added protection will gain validity as you view more photos as I get further into this chapter. Photos will explain having about 5 separate little shapes to merge into one grand "zone of minimal heat absorption".
If anyone has a comment, that'd be just fine. Perhaps wait for the next photos.
Seeing as how I have a plethora of time on my hands, I'm taking a pretty laid back approach to each segment of this build, and it is allowing an unexpected paradigm acceleration of results that is not my usual approach (repeat/ edit/ upgrade).  I'm sure many here can appreciate this - & if I might mention, it changes like the frequency of contents of a ladies undergarment drawer" if you can excuse the obtuse reference. 
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on March 13, 2022, 10:32:39 PM
Shot or two of the type of blanket being fit around the hot side of the turbo. I sewed these using stainless steel thread by hand (I'm good at darning socks and other stuff too).
I'll add some "installed" photos shortly.
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I had a diversion and built a fuel injector test stand - it can be used to flush, compare flow rates, but more importantly to Microsquirt procedures to measure "dead time" or the offset behavior. That is the short time period between when the machine ECU comands fuel injection, and when it starts to take place, typically a small number like 0.5ms to 1.0ms for high res injectors. This is very important to develop a good tune and engine that will idle and lift from idle smoothly/ repeatably. Fuel is held in the tank, shop air pressure at system pressure is applied (43.5psi for my purposes), and car battery plus the ecu and tuning lap top to operate the various injection cycles. All the data is entered into an Xcel file to extrapolate the basically straight line results down to bottom of X axis for the particular number. This info is not generally offered by suppliers, and must be used with caution when borrowed from other tunes (if the constraints aren't listed correctly etc.).
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Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on March 29, 2022, 12:18:03 PM
 :lets-eat:
Crankshaft sensor group is now a smaller 12 tooth tone wheel, original twin sensor plate reused and shaped for a single VR sensor. The small adaptor allows slight set up phase shift of the gear to help establish correct timing to the single cam sensor tooth. (MS advises against having both sensors light off at the same time). Actual timing using a timing light would be impossible with the VR in place, so some new marks scribed into the side of the tooth enclosure and a TDC tooth selected to line up with it (but is actually about 100 degrees to opposite side from stock marks). The cam VR sensor mounts through a shaped "O" ring opening in the valve cover, and registers a single tooth. That is a machined ferrous bolt fastened to a round SS disc mated to the top cam gear & held by its bolt/ washer. The gears have enough holes to provide correct location of this bolt/ locknut. (sorry no photos).
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I'll have to set those up using the Tuner Studio program, then its down to a rewire. The most involved saved for last of course. I'm just in the pre-planning phase of where electrical items might relocated to, or live at. I'm almost done and can introduce the main electrical housing (beyond retained stock circuits) for the ECU, additional fuses and relays. Battery up in rear tail compartment along with another electrical center for some relocated stock and large relays and such. Photos to follow.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Laitch on March 29, 2022, 12:23:25 PM
Excellent photos, Arktasian!
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on May 17, 2022, 10:43:04 AM
Gentlemen and Ladies, felt a polite update would be in order as I find it disappointing to follow a project that goes quiet and then no outcome is ever provided.
Equally, I do appreciate posts and information offered here that can help with general maintenance or troubleshooting & keep a folder of printed copies at the ready.
Basically, I've flushed out any challenges that might require solving - from a purely mechanical standpoint. Fit and finish sort of stuff on all the modifications, confirmation of clearances under fuel tank, etc. etc.
That leaves the electrical chapters and I've set a plan for wiring the bike which will be a combination of original stock circuits and the new Microsquirt components discretely overlaid. I'm presently liking and going to keep the "lunch box" for a dash.  112350 Infact, keeping as close to the stock look of this bike has been the target.
However, I have to put the brakes on full time assembly so that there will be something fun to work on during off riding season months, plus to keep other household projects completing -  :idunno:
Hence, she's coming along nicely but still a ways off.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: JimVonBaden on July 14, 2022, 09:28:43 PM
Hopefully you will come back and finish this. Very cool build. I am eagerly awaiting your results.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on July 17, 2022, 10:01:45 PM
Hopefully you will come back and finish this. Very cool build. I am eagerly awaiting your results.

Hello Jim,
It has been only roughly 5 years since I started in on this project I think -  & apart from random excuses and rationalizations (all of which I promise to be genuine and honest), perhaps there should be a rule * about posting a project that takes such a long way round getting completed.
I will most definitely be finishing this bike, and with current status, and the time I now have available to tinker, I'm confident to offer a finish date for mechanical and wiring this winter, followed by the tuning and "MSQ" (or tune template) as riding season commences. Having learn't a thing or three about the tuning process, I feel this next coming spring 2023 will see this bike alive and gaining a nasty reputation (seems to happen with turbo's and such  :idunno: ) 
Any problems * with this - can be taken up with the complaint department.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on December 30, 2022, 12:07:27 AM
Christmas has come and gone, best of the New Year to all.
As mentioned in the special tan colored seating area of the bleachers above, some family weddings have now conspired (along with accompanying home reno work) to push my continued work & final 2 chapters into the next year (wiring, and creation of a viable MSQ - that's the tune)
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 02, 2023, 11:18:33 PM
Excellent, responding to my own infrequent postings  boohoo

The last info offered not quite true, I'm going to spend January's free time putting the wiring and electrical components in order (of course, none of that is of any interest to others here  think). May even crank her up with lap top connected for giggles, but the tuning will have to take place after August.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 12, 2023, 04:29:18 PM
Work progresses.
I needed to downsize the original relay/ fuse bucket for space required by charge air cooler, etc. I had sent that item plus a few other things to Jim VB to use to advantage, as per his post here also)
Hence, as the wiring morphs with space available, I've moved some items up into the tail section (above rear wheel) which is additionally where I'll station the Gel Cell battery.
But, a few items like starter relay, stock circuit fuse aray, and some other relays could reside inside something. Hmm - what to use. Out of the tickle trunk comes this little gem, I'll repaint but leave intact the original manufacturers text on the inside of lid.
That rear tail section board includes a small pulse width modulation circuit to provide speed control over the ventilation fan that rams air through the charge air cooler (under tank) and as well continues along via ducting to a shroud over the turbo hot side (turbine housing). That also has the marine grade heat blankets applied for heat management.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: rbm on January 13, 2023, 08:48:20 AM
Two thumbs up for innovative thinking.  Nice component placement and wiring too.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 13, 2023, 09:35:32 AM
Thanks for your kind comments Robert! I've followed with appreciation your technical contributions to this forum and must advise that I've certainly benefited from the knowledge and information that you have most generously made available.
The "wiring" work on this bike is actually just at its initial phase - with a lot of pre-planning and design layout, due to a combination of desired functions and as well space available. I am no stranger to having had to back track on "upgrade" wiring and occasionally had to start over where I had thought I was doing something "better" and yet in reality created fresh problems.
In this case, the stock wiring will be cleaned up but left free of final sheathings and tie wraps till its commissioning testing has taken place. Equally, the Microsquirt wiring will be fully bench tested (lap top connected) using an item called a "Jim Stim" to replicate tone wheel sensor patterns initially, followed by actual cranking with plugs out to prove all systems jive, and that the controller will sync. That quite possibly will be done by spring at which point I hope to continue "center stand" tuning followed by over the road/ hill tuning to gain a reasonable MSQ.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 28, 2023, 11:15:13 AM
I performed a flow test on the 250cc (24lb) EV1 injectors I'm using. I chose this size to reflect fueling increases that will develop with forced induction. The little test stand in photos posted above actually worked well, and utilizing an Excel file a "Dead Time" spec of 0.5ms results. This spec is something that is important to enter into the tuning program (Tuner Studio), and interestingly isn't provided by most suppliers (& when it is provided or plagiarized from another squirter tends to be wrong).
Wiring progresses systematically and with good integration with original circuits and space available. (I couldn't attach the Xcel file here, if anyone is doing a similar project and is interested in the file, notify me and I'll email it too you)
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: frankenduck on January 28, 2023, 01:51:59 PM
1) I'd just get rid of the BMU.

2) Battery in tail cowl: Putting weight high and back on a motorcycle degrades handling.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 28, 2023, 07:28:54 PM
1) Ours is a modest home, and has never had a BMU (building maintenance unit)
2) Its a modest AGM, but with other items removed and that I also have a modest ass, I don't believe this is going to be an issue. But thanks for mentioning.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: frankenduck on January 28, 2023, 08:52:37 PM
BMU = Bulb Monitor Unit

How to get rid of it:

Connect Gray/White (from Fuse 2) to Gray/Black(tail light power)

Connect Gray/Green(rear brake switch) and Gray/Red(front brake switch) to Gray/Yellow(brake light)

Then you can run LED brake and tail lights without the BMU cluster light illuminating.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on January 29, 2023, 10:11:05 AM
Well that anacronym clarification deserves thanks, and a BLT should we cross paths. Also that's a useful workaround towards LED upgrades, make it 2xBLT then.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on February 21, 2023, 10:35:19 AM
Wiring is complete.

* MS Activity Center.JPG (33.48 kB . 576x576 - viewed 375 times) The "Trapezoid" item is a cover over a smallish housing that contains the V3 Microsquirt, relays, and a fuse block (will post a photo with cover off later).

* Folded Open for harnesses and runs to connect.JPG (73.02 kB . 768x576 - viewed 386 times) Here, its folded down to allow procedures and wiring. All harnesses fold in behind once its raised back in place. All soldered connections, and "D" plugs where it counts. Also, lots of shielding on various circuits - no noise allowed  :nono2:

* Jim Stim.JPG (49.91 kB . 432x576 - viewed 343 times) This is the "JimStim" device that can be utilized at great advantage to simulate all manner of engine sensors, tone wheel/ sensor combinations, etc. Its especially useful when troubleshooting something that isn't quite working properly. I may leapfrog right to the point of spinning up engine to witness "sync" - in the next day or so.

* Composite Logger.JPG (75.09 kB . 768x576 - viewed 380 times) This is a composite tooth log that is available on diagnostics (via Tuner Studio) to witness how the pickups are working & this was from a previous session using the drill press to prove out the 24 - 1 crank/ cam arrangement.

* Generate VE Table - Fueling.JPG (70.21 kB . 768x444 - viewed 335 times) VE table generator is a fun one, some of the values are randomly chosen at this point, so we'll see how she runs and some editing there may be required.
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on February 24, 2023, 07:32:50 PM
All wiring complete, decided to crank her over with plugs out to prove operation of the crank and cam wheels and their sensors. Getting that right is pretty much what anybody squirting with these ecu's needs to get right. Our friend WMAX351 above in the special section was on that quest, after having initially gained "Fuel Only" control via simpler triggering - but then dropped the project.
In any case, she's gaining sync nicely, with the plugs firing in sequential order as they sit outside the valve cover & grounded on a little fixture.
Below is a "snip" of the composite diagnostics running and proving sync.
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Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on March 06, 2023, 11:56:43 PM
All done, ready to start up and tune.
This will unfortunately have to wait till later this summer, as our schedule is chalk full of family stuff. I promise to return.
Decided to rebadge the valve cover insert:
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Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on October 04, 2023, 10:06:15 AM
Warnings are popping up again -
Warning: this topic has not been posted in for at least 180 days.
Unless you're sure you want to reply, please consider starting a new topic.  :idunno:

Summer has given way to fall up here, but the project is off the modification table and waiting to roll into the garage for what will now be a tuning session over the winter. By tuning, I'm referring to the development of the Microsquirt (ECU) tune files (collection of maps and settings that comprise a well sorted and running motorcycle - aka "MSQ")

Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Laitch on October 04, 2023, 11:30:46 AM
I am sure I want to reply!
Thanks for coming back in here with an update, Arktasian.  112350
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on December 09, 2023, 11:02:12 PM
Shameless project update: Bike is now up in the garage where it will be finished. As things would work out, rolled it up and out of basement/ backyard rather than first start and self powered parking job, with "pusher" help. Dark stormy, rainy night negotiating slippery grass and steep pathways - why not?  112350
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Kt88 on December 22, 2023, 11:36:29 PM
As usual, on this or the other forum, I love watching your work. Thanks for sharing!
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on December 23, 2023, 05:53:51 PM
That would be ADV? I find much better K bike content here on Motobrick  103123
Thanks and project "continuation" is but a mere few motions away. I've almost completed some fairly routine maintenance procedures on the R100RT whilst Christmas presents a season of mirth and family fun time. Although I can ride the RT again this upcoming season, it is my desire to have the K75 up and running nicely.
Best of the season to all  112350
Title: Re: Arktasian's 95 K75 on Microsquirt Mod Table
Post by: Arktasian on February 23, 2024, 04:47:35 PM
Time for an update - I await some additional garage space to do a start up and initiate the tuning process  103123.
Family vehicles (4 wheel variety, offspring specific) have been stealing space in the surgery ward, but that should rectify in the next few weeks. I've been taking advantage also of some pretty soggy & cold weather to go over wiring notes and create some schematic pages. (tend to be pictorial rich which is a personal style/ choice - not perhaps as professional as some of the work on display here on the site).
If I can mention, converting a K engine to run with a microsquirt, or alternately a speeduino has been previously done, but perhaps not in exactly the same manner and strategy as I have on the drawing board.