Author Topic: K75s Two into One Project  (Read 33941 times)

Offline rbm

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Re: K75s Two into One Project
« Reply #50 on: February 28, 2016, 06:12:46 PM »
No way to determine clutch wear unless you measure the thickness of the disk, which requires removal and disassembly of the clutch pack.
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

Offline Martin

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Re: K75s Two into One Project
« Reply #51 on: February 28, 2016, 10:47:48 PM »
Scud I replaced my clutch at 140,000 k's hardly any wear. I only replaced it because I had ordered a new one special order.
Regards Martin
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Laitch

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Re: K75s Two into One Project
« Reply #52 on: February 28, 2016, 10:49:40 PM »
Swingarm bearings - all four bearings (two swingarms to choose from on reassembly) rotate well and do not feel notchy.
If it were my bike, I'd bolt one of them onto the bike and move on. If the bike veered on acceleration or braking, I'd mount the other and replace the bearings in the first. You already know dismounting those parts is not a big deal. Strategy depends on which is priority: expense, riding or perfection.

Interchangeability of splines - as I determine the best-condition driveshaft and final drive, should I have any concern about mix/match - or try to keep parts together that were previously together>
I wouldn't be concerned about mix/match of assemblies in this case but if it were my project, I'd ride with the most worn of the two assemblies—if they weren't severely sawtoothed—and keep the better ones for replacement, as long as attempting to recoup costs wasn't a consideration. I'm just that perverse.

Have you posted photos somewhere here showing the condition of these components, Scud?
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline Scud

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Re: K75s Two into One Project
« Reply #53 on: March 02, 2016, 01:27:39 AM »
Thanks guys, for the insights. The priority for the bike is riding - and primarily pedestrian purposes such as commuting, airport runs, run-about, and probably a few weekend sport-tours. With this project I am playing "free motorcycle" - I previously parted out an R1100RT and parlayed the funds into these two bikes. After selling what I can at the end, I should end up close to zero cost (but that depends on how silly I get with parts and paint). I'll get some pics of the various splines soon.

Meanwhile, today's noteworthy progress is: footpeg plate subassemblies. Powdercoated plates, levers, and passenger peg brackets, Spiegler braided brake line, painted master cylinder (all non-ABS parts from parts bike). Removed ABS pumps and brackets - damn, you would need ABS to stop the bike with all that extra weight.

A lot of stuff on the '92 is corroded. I had to resort to a sledgehammer and drift to get the pin out of the LH rider peg - miraculously without damage to the ABS peg-plate.

  • Carlsbad, CA
  • 1992 K75s. 2002 Moto Guzzi V11 Scura, 2003 Moto Guzzi V11 LeMans. 2007 Husqvarna TE450

Offline Scud

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Re: K75s Two into One Project
« Reply #54 on: March 02, 2016, 10:40:12 PM »
Here are the pics of the various splines (I didn't get a picture of the transmission output, but it's about the same condition as the input).





My assessment is the clutch and transmission input look good and both driveshafts look good. The 1992 final drive splines look in better shape, but I'm not sure how much life the 1990 final drive splines have left in them. What say those of you who have seen many of these?

As a reminder, the 1992 parts are original with about 44,000 miles and I think this is the first time they've been opened since new. The 1990 had many repairs along the way and I don't know how many miles are on each part.
  • Carlsbad, CA
  • 1992 K75s. 2002 Moto Guzzi V11 Scura, 2003 Moto Guzzi V11 LeMans. 2007 Husqvarna TE450

Offline Laitch

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Re: K75s Two into One Project
« Reply #55 on: March 02, 2016, 11:37:07 PM »
The 1990 driveshaft looks to me like it has less sawtooth effect on the rear splines than the '92. Straight-on photos of the rear drives would be more helpful to me for assessing the shaft splines. The '92 looks mighty fine from that angle.

Difficult choices, Scud, but at least you have some.
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline Scud

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Re: K75s Two into One Project
« Reply #56 on: March 03, 2016, 02:12:46 AM »
Looking straight at the splines helps, now I see what you mean by the sawtooth effect - the 1990 final drive splines have more sawtooth than the 1992, right?



So, what I think I'd like to do if it makes sense is: run the 1990 for a while, then dump it and put the 1992 back in. How long might the 1990 go without any significant risk of failure? 10,000 miles? More? Less?

If the 1990 has a bit of life left, maybe I should just keep the driveshafts paired with the final drives they're already used to.
  • Carlsbad, CA
  • 1992 K75s. 2002 Moto Guzzi V11 Scura, 2003 Moto Guzzi V11 LeMans. 2007 Husqvarna TE450

Offline gazman

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Re: K75s Two into One Project
« Reply #57 on: March 03, 2016, 06:57:45 AM »
If It was me I'd use the best and save the other for a spare
  • west australia
  • 93 K1100LT

Offline TrueAce

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Re: K75s Two into One Project
« Reply #58 on: March 03, 2016, 09:10:46 AM »
+1 with Gazman. Maybe it's the light, but the '92 looks better, run the better parts, catastrophic failure is unlikely, no need to fully tear down again.
  • Florida
  • '85 K100GS, '85 K100RSSC,', '94 K1100RS,'10 S1000rr,'14 Ural Sidecar, '15 R Nine T

Offline The Mighty Gryphon

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Re: K75s Two into One Project
« Reply #59 on: March 03, 2016, 09:19:20 AM »
The splines on the '90 parts look like they would give you a couple of years minimum with diligent maintenance, then you could bin them and put in the newer ones.  If you don't plan on keeping the bike long term, I would put in the good ones and sell the older.  Again, considering good maintenance, those newer splines should be good for at least 50-60k miles, probably a lot more.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too

Offline Martin

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Re: K75s Two into One Project
« Reply #60 on: March 03, 2016, 10:02:30 AM »
+1 Gryph
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Laitch

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Re: K75s Two into One Project
« Reply #61 on: March 03, 2016, 10:09:52 AM »
 :2thumbup: Gryph
  • Along the Ridley in Vermont.
  • 1995 K75T 68,000 miles
I wept because I had no radials until I met a man who had no splines.
http://www.motobrick.com/index.php/topic,296.msg53303.html#msg53303

Offline Scud

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Re: K75s Two into One Project
« Reply #62 on: March 03, 2016, 11:44:41 AM »
OK, now no matter what I do I have to ignore somebody's advice... apologies in advance.

I only have one good transmission, so there's no choice - a good lube and it can stay in place for a long time. I have two of everything from there back. Swingarm bearings seem about the same, but I picked the one that seems slightly smoother.

I think I will run the older shaft and final drive. Rationale: I can get some "free" use. The older one also has a non-ABS brake disc and I am using the older non-ABS caliper, which has good pads already in it.  The disc on the older drive is 0.16" - which is getting pretty close to the 0.14" limit. I don't use much rear brake anyway - but when pads get worn or the rotor is too thin, I'll put the newer shaft and final drive back on (which is not a big job).

I do plan to keep the bike for a while. At first I thought I would leave it as sort of a beater-bike, but I have slightly milder case of the same disease that MLytle suffers from. I just cannot re-install a dirty or corroded part. Can't wait to see what Marshall does with the Fox shock from my 1990 bike.
  • Carlsbad, CA
  • 1992 K75s. 2002 Moto Guzzi V11 Scura, 2003 Moto Guzzi V11 LeMans. 2007 Husqvarna TE450

Online mlytle

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Re: K75s Two into One Project
« Reply #63 on: March 03, 2016, 01:18:51 PM »
you have two serviceable shafts and drives.....there is no bad choice.

as for the Fox shock...I already spent some quality time cleaning it up, and it is off to a rebuilder today....:-)

do you have a pic of where the remote reservoir was mounted along the frame?  that hose is pretty long!
  • alexandria, va
  • 92 K75s, 94 K75s, 96 K1100RS SE (custodian), 09 K1300s
Marshall
Project Thread "K75s Midlife Refresh"
http://www.motobrick.com/index.php/topic,7810.0.html

Offline Scud

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Re: K75s Two into One Project
« Reply #64 on: March 03, 2016, 01:47:25 PM »
do you have a pic of where the remote reservoir was mounted along the frame?  that hose is pretty long!

Here you go. The hose made a turn between the battery and inner fender:



The 1990 didn't have saddlebags or racks mounted (but I got an unused set of Z-racks that I will use on re-assembly).  Basically, I'm going to use the whole backend of the 1990 (as pictured here before disassembly) for a while - except that I have a new Progressive shock without reservoir.
  • Carlsbad, CA
  • 1992 K75s. 2002 Moto Guzzi V11 Scura, 2003 Moto Guzzi V11 LeMans. 2007 Husqvarna TE450

Online mlytle

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Re: K75s Two into One Project
« Reply #65 on: March 03, 2016, 01:49:23 PM »
ah, thanks.  that hose could be 8 inches  shorter if mounted with hose facing back....
  • alexandria, va
  • 92 K75s, 94 K75s, 96 K1100RS SE (custodian), 09 K1300s
Marshall
Project Thread "K75s Midlife Refresh"
http://www.motobrick.com/index.php/topic,7810.0.html

Offline The Mighty Gryphon

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Re: K75s Two into One Project
« Reply #66 on: March 03, 2016, 05:24:41 PM »
Marshall, the reservoir for the Fox Twin Clicker on my K100RS is mounted on the opposite side of the rear frame loop from the shock.  You might want to try that mounting scheme.   Without going out to the garage and looking, I want to say that the hose comes out of the front facing side of the shock and loops around in the space between the ECU and the rear mudguard.

As far as I know, there are no special requirements for mounting the reservoir, you can pretty much put it anywhere it fits and doesn't get in the way.   You do want to have access to the damping knob on the reservoir for getting the damping tuned.
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too

Offline Scud

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Re: K75s Two into One Project
« Reply #67 on: March 04, 2016, 01:16:54 AM »
Getting lined up for assembly. Fresh paint on transmission, swingarm, final drive, rear caliper, and some other little bits.

Can someone please explain why my wife is not excited about this? It can't possibly be that this is where she normally parks and her car has been outside for a week...  :dunno2:

  • Carlsbad, CA
  • 1992 K75s. 2002 Moto Guzzi V11 Scura, 2003 Moto Guzzi V11 LeMans. 2007 Husqvarna TE450

Offline TrueAce

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Re: K75s Two into One Project
« Reply #68 on: March 04, 2016, 09:23:56 AM »
Scud, you obviously have failed to make you wife feel a part of the project experience. Give her a sense of ownership and pride in your project. Some helpful ideas you should consider , let her clean the greasy parts with solvent, put the tools back in their proper place after you use them and throw them around the garage, sweep the floor, run to the store for parts whenever you need them, take pictures of you working, and any other task that comes to mind. All of this will give her a new attitude. It sure worked with my ex-wife.
  • Florida
  • '85 K100GS, '85 K100RSSC,', '94 K1100RS,'10 S1000rr,'14 Ural Sidecar, '15 R Nine T

Offline The Mighty Gryphon

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Re: K75s Two into One Project
« Reply #69 on: March 04, 2016, 10:37:53 AM »
Don't forget having her bring you sandwiches and beer...
  • In my garage in Marilla, NY
  • '94 K75RT Mystic Red, '91K100RS White/Blue
Current:
'94 K75RT "Ilsa, She Wolf of the SS"
'91 K100RS "Moby Brick Too

Online mlytle

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Re: K75s Two into One Project
« Reply #70 on: March 04, 2016, 12:25:19 PM »



all I can think of seeing this is an IKEA box exploded. "SOME ASSEMBLY REQUIRED"

"sweety, could you get me another beer?  this is gonna take longer than I expected....."
  • alexandria, va
  • 92 K75s, 94 K75s, 96 K1100RS SE (custodian), 09 K1300s
Marshall
Project Thread "K75s Midlife Refresh"
http://www.motobrick.com/index.php/topic,7810.0.html

Offline rbm

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Re: K75s Two into One Project
« Reply #71 on: March 04, 2016, 01:22:40 PM »
... All of this will give her a new attitude. It sure worked with my ex-wife.
Ex being the key word in this description.
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

Offline Scud

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Re: K75s Two into One Project
« Reply #72 on: March 04, 2016, 02:14:13 PM »
Thank-you gentlemen; I think we understand each other. And my wife is really great about my various projects - although "this is gonna take longer than I expected."

Meanwhile, I'm impressed with the VHT Engine Case paint. VHT's satin black gives a luster that's similar to the flat black powdercoating. It goes nicely too, definitely the best rattle-can paint I've used. Yesterday, the clutch housing looked as bad as the case cover that's currently on the bike.

  • Carlsbad, CA
  • 1992 K75s. 2002 Moto Guzzi V11 Scura, 2003 Moto Guzzi V11 LeMans. 2007 Husqvarna TE450

Offline Bill

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Re: K75s Two into One Project
« Reply #73 on: March 04, 2016, 02:23:37 PM »
All of this will give her a new attitude. It sure worked with my ex-wife.
  Yes ... ex is a keyword , but when changing attitudes one should be specific as to which new one you want .
  • Sutton, Ontario, Canada
  • K100 LT
Current:  88 K100 LT

86 K100 R-?L?T parts collection in loose formation...

previous:
84 V45 Sabre
74 CB400
72 CB750

Offline Martin

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Re: K75s Two into One Project
« Reply #74 on: March 04, 2016, 02:51:47 PM »
You need to give her a sense of pride and ownership, buy her a BMW T-Shirt. Secondhand if you need the money for the bike. If you really want to go for it, have one custom made with something like MY MAN BUILT THIS WHAT HAS YOURS DONE.
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

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