BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


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


__________________________________________________
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


__________________________________________________
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.

    

13Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 3:34 am

Middleton

Middleton
active member
active member
Hi,did you get to the bottom of the problem, as I have now a similar issue.

    

14Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 4:34 am

92KK 84WW Olaf

avatar
Life time member
Life time member
First question, its there any mechanical noise or grinding? OP never responded to that question. Put bike on centre stand, run it in gear check that out.

Second question, any oil dripping from the hole in the bottom of the bell housing??

Third question, is there free play at the clutch lever?


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles.
    

15Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 5:04 am

Middleton

Middleton
active member
active member
On my problem bike started loosing drive, as though it was running out of fuel and there was some mechanical noise and straight away I thought of the splines, reduced throttle and bike would drive but as soon as I increased revs same problem, felt lucky to get home, noticed on a downhill section of road bike picked up ok so then started thinking it could be the clutch,I have just recently bought the bike (1985 K100RS) so don’t know the maintenance history but was planning to lube the transmission and gearbox splines so this has just brought this forward. When I bought the bike seemed to be running fine ,carried out a service and found air filter in wrong way around,incorrect spark plugs, oil breather pipe badly split, corrected all these things and bike now runs worse than when I bought it, very disillusioned with bike at present.

    

16Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 6:21 am

moriarti

moriarti
Life time member
Life time member
I'm with olaf#14,then remove drive/prop shaft to  inspect splines/joint and run the bike to see if noise persits before doing a full stripdown,best of luck Very Happy


__________________________________________________
1984 k100 rs red/black VIN  0004449
    

17Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 8:28 am

Middleton

Middleton
active member
active member
Thank you all for the advice it is appreciated,

    

18Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 8:58 am

Laitch

Laitch
Life time member
Life time member
@Middleton wrote:On my problem bike started loosing drive, . . .
Have you checked the clutch adjustment according to how it is explained in BMW's manual?


__________________________________________________
1995 K75 81,000 miles
In Gear Won't Drive Usa-lo10
    

19Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 1:32 pm

Middleton

Middleton
active member
active member
Hi, Clutch adjustment seems fine,bike runs through the gears when on the centre stand, gear change seems smooth but there is some clunk what I think is from the driveshaft when the clutch is released but as I have never had a shaft drive bike before I am not sure whether this is normal or not, that noise wasn’t noticeable when driving on the road. There is no oil from the gearbox hole.
I have just noticed the rear brake disc appears to have several large fractures to add to my woes so I don’t want to ride it until that is fixed, it was quite a eye opener when I saw them and now feel quite lucky that I actually got the bike home.

    

20Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 1:49 pm

Laitch

Laitch
Life time member
Life time member
@Middleton wrote:Hi, Clutch adjustment seems fine,bike runs through the gears when on the centre stand, gear change seems smooth but there is some clunk
That would be a No answer to my question.  Smile

It's likely that drive splines are a problem but a clutch adjustment isn't checked the way you have described.


__________________________________________________
1995 K75 81,000 miles
In Gear Won't Drive Usa-lo10
    

21Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 3:40 pm

Middleton

Middleton
active member
active member
On the clutch adjustment, I checked the distance against the cyber manual and it was ok, the clutch action is quite light but was not sure on the free play,when I touch the clutch at the handlebars you can see slight movement at the clutch cable at the gearbox end but it does not seem to operate the clutch just a bit of play, I am not sure if the allowed 5mm of free play at the handlebars should move the clutch arm at all.

    

22Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Thu Oct 08, 2020 8:28 pm

Laitch

Laitch
Life time member
Life time member
@Middleton wrote:On the clutch adjustment, I checked the distance against the cyber manual and it was ok, . . . 

I am not sure if the allowed 5mm of free play at the handlebars should move the clutch arm at all.
Which distance is ok?

Free play is the distance the clutch hand lever moves before its cable moves the clutch lever that is lightly contacting the clutch rod piston. Free play is measured at the gap created between the clutch hand lever and the clutch hand lever housing.


__________________________________________________
1995 K75 81,000 miles
In Gear Won't Drive Usa-lo10
    

23Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Fri Oct 09, 2020 2:08 am

Middleton

Middleton
active member
active member
I measured the 3 inches at the actuating arm where the rubber gaiter is.

    

24Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Fri Oct 09, 2020 2:13 am

Middleton

Middleton
active member
active member
I think from your description I will need to alter the free play slightly as mine as soon as you touch the clutch at the handlebars you can see very slight movement at the clutch actuating rod.

    

25Back to top Go down   In Gear Won't Drive Empty UPDATE: on Fri Oct 09, 2020 5:18 pm

tjh1985

tjh1985
Silver member
Silver member
UPDATE:

All six bolts on my Output Shaft were sheared off (pics attached). Hence why the motor was spinning and I wasn’t going anywhere.

I’m replacing the 6-bolt (pictured) with the K1200 12-bolt (pictured). And as one would expect, the deeper the project goes into the engine the more issues pop up...new water pump on order now. But I’m good with it all because this baby is going to running AMAZING in another few days!

Thanks for everyone’s input when the problem arose. It’s pretty awesome to have a community like this one hear.

http://www.thomashurst.com
    

26Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Sat Oct 10, 2020 10:09 am

Snod Blatter

Snod Blatter
Life time member
Life time member
You say pics attached but I'm not seeing any mechanical gore In Gear Won't Drive 652573


__________________________________________________
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/
    

27Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Sat Oct 10, 2020 1:27 pm

tjh1985

tjh1985
Silver member
Silver member
In Gear Won't Drive F2b42f10
In Gear Won't Drive 64fbdd10

http://www.thomashurst.com
    

28Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Sat Oct 10, 2020 1:44 pm

tjh1985

tjh1985
Silver member
Silver member
In Gear Won't Drive 587a5610 In Gear Won't Drive 587a5610

http://www.thomashurst.com
    

29Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Sat Oct 10, 2020 10:58 pm

tjh1985

tjh1985
Silver member
Silver member
@middelton - yes, I did. The bolts holding the output shaft sheared off. I have a more detailed update with pics

http://www.thomashurst.com
    

30Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Sun Oct 11, 2020 9:19 am

Snod Blatter

Snod Blatter
Life time member
Life time member
Lovely pics, how very weird that they finally let go when the bike was at home! Do you usually set off by doing a wheelie down the street? Cool


__________________________________________________
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/
    

31Back to top Go down   In Gear Won't Drive Empty Re: In Gear Won't Drive on Wed Oct 14, 2020 1:23 am

JR_K100RS

JR_K100RS
Life time member
Life time member
Hello tjh , are they bolts or rivets ? , the factory unit is originally put together with rivets , if they are bolts someone has perhaps been in there and not used the correct fastener ?

John Re

Melbourne Australia


__________________________________________________
Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum