K11 Owners Group

duckbubbles · Posted: Sun Apr 13, 2008 8:33 pm Post subject: "New" transmission installed

I got my K100/1100/1200 "Hybrid" back up and running a couple of weeks ago, after six months of down time. It's nice to have the commuter going again. Everything is working as it should. The transmission (K1100) was bought from Cycles Recycled in Morganton, N.C. I took it apart and was really pleased to find it in excellent condition. I think it has less than 10,000 original miles on it. Put in all new seals and put it back together and installed it.

I am waiting for my final drive to be converted to a 2.54 gearset by my local mechanic. He has the tools needed. In the mean time, he loaned me a final drive from an early model K100RT. It is a 2.91 ratio and with my shorter than stock rear tire I am turning RPM in the stratosphere- 4700 at a true 70 mph. Good for hill climbing and drag racing. I don't like it, but at least I can use the bike. Gas mileage is hovering around 40, I expect around 45 when things are back to near normal.

My original transmission had been through one rebuild and was showing signs of needing another, jumping out of and back into second gear under moderate throttle. But after more than 300K miles, I thought the gears must be about worn through. I want to take it apart sometime and have a look in there. The original shift lever decided it didn't like this new transmission and broke in half at the splines the first day I rode it. So far, that is the only rejection that has happened. Wish me luck.

Frank
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85 K100/1100RS, 321,000 miles, 25 years
96 Ducati 900SS/SP, sold it
05 R1200ST, 35,000 miles, 5 years
400,000 BMW miles

Off the grid · Posted: Sun Apr 13, 2008 9:23 pm Post subject:

Well done Frank, I think your K11 is the benchmark as to how durable they really are.

I can see a tranny swap in my future sometime.
_________________
Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
2009 Husqvarna TE610. "The dirty Italian mistress"

owrstrich · Posted: Sun Apr 13, 2008 10:31 pm Post subject:

much rejoicing for duckbubbles...

you guys that tackle the big jobs are my heroes...

johnny
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yeeeeeehaaaaaaa...

Flying Duck · Posted: Mon Apr 14, 2008 11:44 am Post subject:

What? No pics? Very Happy

_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

superchicken · Posted: Wed Apr 30, 2008 8:35 am Post subject: k bike overdrive

I have been interested as well in regard to an over drive gear installed in the tranny. We all have looked for another gear when hitting the gear shift! Then look down with a wry smile at the gear indicator...

I replaced the rear wheel on this 11RS with a 5 spoke k1200LT wheel. Then removed radial tires from both wheels. Back to Bias. Rear wheel is matched with the metzler 880 LT tire. Front is the Lazertec.
Bias tires last at least twice as long as Radials! I sure can feel the difference in handling. More like an LT. However $$$ is saved for fuel tank pleasure.

Anyways just curious on what ifs of changing 5th gear to an overdrive to drop the RPMS and make the bike get that 70mpg!

I admit... This bike is much easier on fuel IF I could keep my throttle hand from well moving Smile

!
_________________
Tim Lindstrom, ab0ts
1995 K 1100 RS
Columbia Heights, MN

duckbubbles · Posted: Wed Apr 30, 2008 7:10 pm Post subject:

Tim-

What I had was a set of gears in my old transmission from the now defunct company of Luftmeister. It was two gears that changed the primary reduction ratio by 7% higher. Then there was a fifth gear that changed the ratio another 4% for a total of 11%. That gearset had around 250,000 miles on it and I was afraid if I just repaired the shift drum, forks and bearings like I did last time, it wouldn't last like I want it to. Even with the tall gearing, I would still search for 6th gear sometimes. Luftmeister also offered a 7%-14% gearset way back when.

I am getting my final drive modified with a ring and pinion from the out of production cruiser. Going from a 2.81 to a 2.54 final drive ratio. That will put me just about where I was with my old transmission. I should be getting it back in a couple of weeks and I can't wait, since I am riding around spinning the engine like crazy. Since I am running a shorter than stock rear tire, it is even more than it could be. The best would be to have the old transmission and the cruiser final drive gear together. I think the engine would hardly notice, but the clutch might.

Frank
_________________
85 K100/1100RS, 321,000 miles, 25 years
96 Ducati 900SS/SP, sold it
05 R1200ST, 35,000 miles, 5 years
400,000 BMW miles

chopper_harris · Posted: Fri May 02, 2008 7:45 pm Post subject:

Duck

Do you still have the old Luftmeister gear clusters ?

I'm intreagued to know if they were custom made gears, or pattern items which they had taken the time to mate up as a viable 5th.

I understand that there are many who apologise for the factory ratios by claiming that the 16v bikes love revs, but I'm not one.
The stock ratios, and particularly 5th are just plain wrong Rolling Eyes

The standard 5th is 1.6:1, giving appx 17mph/1000rpm (80mph = 4,700rpm).
Bringing it down to around 1.2:1 would give 23mph/1000 (80mph = 3,500rpm).

This is where a grand tourer should be - if I want to wring the neck of a motorcycle, I'll get my TL1000 out Cool

Are there any makers marks on the modified gears, which would give me a clue where to start looking, please ?
I have bought a decent K11 gearbox from a wrecker as a test rig, and intend to peruse this problem over the coming weeks.

All useful comments and thoughts are most welcome Very Happy

_________________
C1 200 (2001)
R100 RS (1990)
NSU Quickly N (1964)
Honda 400/4 F1 (1977)
MotoGuzzi 1000C (1978)
Suzuki TL 1000 R (1999)
Kawasaki KLV1000 (2005)
K12R Sport (2007) - Wifeys

Flying Duck · Posted: Fri May 02, 2008 7:49 pm Post subject:

chopper_harris · Posted: Fri May 02, 2008 8:05 pm Post subject:

this was addressed to duckbubbles (aka Frank), see previous post Wink

_________________
C1 200 (2001)
R100 RS (1990)
NSU Quickly N (1964)
Honda 400/4 F1 (1977)
MotoGuzzi 1000C (1978)
Suzuki TL 1000 R (1999)
Kawasaki KLV1000 (2005)
K12R Sport (2007) - Wifeys

duckbubbles · Posted: Sat May 03, 2008 5:11 pm Post subject: