BMW K bikes (Bricks)

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1Back to top Go down   In Gear Won't Drive Empty In Gear Won't Drive on Mon Aug 31, 2020 1:29 pm

tjh1985

tjh1985
Silver member
Silver member
Took the bike for a ride last night - Parked to enjoy the sunset and when I got back on the bike it wouldn't move.

When I let the clutch out and give it gas the bike begins to accelerate and then stops accelerating no matter how much more gas I give it.

When I let off the gas completely it just idles as if it's in neutral.

Does anyone have experience with this type of problem?

It's a 1985 K100rs

Thanks so much

http://www.thomashurst.com
    

2Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Mon Aug 31, 2020 1:52 pm

gorio

gorio
Silver member
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Does the engine RPM increase but the road speed remains the same or does the RPM stay the same?


__________________________________________________
1992 K100rs 16v
2006 R1200rt
Past lives
Kawasaki Concours
1976 BMW R90s
1975 Ducati 860gt
1992 Honda VFR750
1985 Honda VF750
1982 Kawasaki 750GPZ
1975 Norton 850 Commando
    

3Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Mon Aug 31, 2020 2:04 pm

moriarti

moriarti
Life time member
Life time member
The clutch doesn't usually just let go but sounding that way,Any free play on clutch lever at all scratch


__________________________________________________
1984 k100 rs red/black VIN  0004449
    

4Back to top Go down   In Gear Won't Drive Empty In Gear Won't Drive on Mon Aug 31, 2020 2:11 pm

tjh1985

tjh1985
Silver member
Silver member
RPM's DO Increase when I give gas

http://www.thomashurst.com
    

5Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Mon Aug 31, 2020 2:14 pm

moriarti

moriarti
Life time member
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@tjh1985 wrote:RPM's DO Increase when I give gas
See #3


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1984 k100 rs red/black VIN  0004449
    

6Back to top Go down   In Gear Won't Drive Empty In Gear Won't Drive on Mon Aug 31, 2020 2:17 pm

tjh1985

tjh1985
Silver member
Silver member

@moriarti


There is little to no play in clutch cable - not sure how to adjust it to loosen it up

http://www.thomashurst.com
    

7Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Mon Aug 31, 2020 2:29 pm

moriarti

moriarti
Life time member
Life time member
OK,disconnect clutch cable at gearbox end and then push clutch activation arm in and make sure it not partially sized and moves in and out easily.Any sign of stiffness then it must be serviced.youtube videos on clutch cable setting easy to follow


With cable OFF PULL CLUTCH ARM right back put bike in gear and push back/forth
to see if clutch is holding,fingers crossed


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1984 k100 rs red/black VIN  0004449
    

8Back to top Go down   In Gear Won't Drive Empty In Gear Won't Drive on Mon Aug 31, 2020 5:03 pm

tjh1985

tjh1985
Silver member
Silver member
Well, shoot - Clutch activation isn't stiff and I tipped the bike over to boot. So no winning for me today. On to the trailer and into the shop it goes...Thanks for trying to help me figure it out though.

Thomas

http://www.thomashurst.com
    

9Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Mon Aug 31, 2020 8:16 pm

gorio

gorio
Silver member
Silver member
This won't be the answer on your bike because the exhaust system is different.
On a 1992 K100rs I had sudden and complete lose of the clutch. I had been driving on a freshly seal coated road. You know where they spry down tar and them cover it with 3/8" minus gravel.
Anyway the engine was no longer connected to the rear wheel and the clutch lever was a bit floppy.
There ended up being a a small perfectly shaped rock held inplace with a bit of tar wedged between the clutch arm and the exhaust system. So hard to see anything in there on the latter bikes with the bulge in the exhaust system.
 I am guessing a seized needle bear in there might act the same. Hard to imagine it just seizing up solid though.


I hope yours proves to be as simple.


__________________________________________________
1992 K100rs 16v
2006 R1200rt
Past lives
Kawasaki Concours
1976 BMW R90s
1975 Ducati 860gt
1992 Honda VFR750
1985 Honda VF750
1982 Kawasaki 750GPZ
1975 Norton 850 Commando
    

10Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Tue Sep 01, 2020 11:41 am

Snod Blatter

Snod Blatter
Life time member
Life time member
Is the final drive making any awful noises..?


__________________________________________________
1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x Honda CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL
http://justbikethings.blogspot.co.uk/
    

11Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Tue Sep 01, 2020 11:25 pm

Holister

Holister
Life time member
Life time member
@gorio wrote:.......
There ended up being a a small perfectly shaped rock held inplace with a bit of tar wedged between the clutch arm and the exhaust system. So hard to see anything in there on the latter bikes with the bulge in the exhaust system.
......
I've heard of this happening before. We had someone here a few years ago that reported a stone had lodge in there preventing the clutch arm from fully returning.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  In Gear Won't Drive Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

12Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Sun Sep 20, 2020 12:46 pm

Bipolar

Bipolar
New member
New member
The 1985 K bikes the clutch friction disc hub and input shaft on the transmission were supposed to be lubed every 15000 kilometres if I remember correctly.
My 85 K100RT had the transmission pulled and the splines lubed before I bought it at 16000 kilometres I pulled the transmission and lubed the
splines again at 30000 kilometres. I also installed a newer friction disc in the clutch. The hub on the new disc looked like stainless steel the
original was dark metal. Apparently BMW changed the material in the hub and input shaft and the lube interval changed to 45000 kilometres.
Again going from memory. If the splines are not lubed they can wear away and stop driving.The splines on both ends of the drive shaft are
supposed to be lubed as well.

    

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