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K100-forum.com » Technical, repair and troubleshooting » Engine and transmission » No Drive to rear wheel

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1Back to top Go down   No Drive to rear wheel Empty No Drive to rear wheel Thu Dec 03, 2015 3:21 pm

K100LT Notts

K100LT Notts
Silver member
Silver member
Was 160 miles from home, gently exiting roundabout and suddenly no drive in any gear to rear wheel - drifted to halt. Pushed it off the road and called AA, They have delivered it home to Nottingham.  Crying or Very sad

There was no mechanical noise and rear wheel rotates very smoothly as if not connected to anything. The gears appear to change.

I have recently replaced drive shaft spines.

I am proposing to have winter project of working forward from the back towards the engine to find the problem.  Any likely culprits?

    

2Back to top Go down   No Drive to rear wheel Empty Re: No Drive to rear wheel Thu Dec 03, 2015 5:19 pm

JR_K100RS

JR_K100RS
Life time member
Life time member
G'day Notts ,
                   I've found myself in the same situation on two occasions , 1st was a stripped out centre spline on the clutch plate , 2nd was a stripped spline on the diff end of the drive shaft . If you have recently looked at the drive shaft take a look at the clutch plate

John Re


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

3Back to top Go down   No Drive to rear wheel Empty Re: No Drive to rear wheel Fri Dec 04, 2015 8:45 pm

Holister

Holister
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I'm no expert in this area but from what I've read on this forum, I would imagine that if it were the splines you would have quite a bit of noise. With the symptoms you describe I'm guessing the clutch pressure plate.
How does the clutch lever feel?


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808		 No Drive to rear wheel Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

4Back to top Go down   No Drive to rear wheel Empty Re: No Drive to rear wheel Sat Dec 05, 2015 2:10 am

92KK 84WW Olaf

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Life time member
Life time member
Someone near to me on an R [not K] had an issue where his clutch pushrod broke and wedged itself in the tunnel through the gear box when the broken ends tried to ride over each other. Unfortunately he kept riding despite knowing something was amiss and burn out he clutch AND chewed out the side of the tunnel meaning clutch and gearbox were toast. Then a mechanically knowledgeable friend mentioned it can happen that the breaks are not unknown and can wedge inside the tunnel effectively leaving you with a spinning clutch and no drive.

KH mentioned the lack of noise too.....I once heard stripped splines.


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

5Back to top Go down   No Drive to rear wheel Empty Re: No Drive to rear wheel Sat Jan 09, 2016 11:40 am

K100LT Notts

K100LT Notts
Silver member
Silver member
Thanks for your replies.

Today I did the monthly battery charge and engine warm up that I do in the winter.

I took the opportunity to look in the gearbox through the gear oil fill hole. I can see some gears with an inspection lamp. When the engine is running and a gear is selected the gears rotate and stop rotating when I apply the clutch. The speed of rotation also changes depending on which gear I select. This leaves me to conclude that the problem is after the gearbox.

I hope this means less dismantling as the problem will be drive shaft or final drive - both easy to get to. A great relief.

    

6Back to top Go down   No Drive to rear wheel Empty Re: No Drive to rear wheel Sat Jan 09, 2016 7:38 pm

Rick G

Rick G
admin
admin
Certainly sounds like a well worn drive shaft spline. Winter is the time to pull the shaft out and send it off to Motobins for a new spline.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

7Back to top Go down   No Drive to rear wheel Empty Found the problem Mon Apr 18, 2016 3:31 pm

K100LT Notts

K100LT Notts
Silver member
Silver member
Now that the weather has warmed up, I stripped from the back end and found a failed drive shaft weld where new splines had been fitted (18 months and 1.5k miles ago)

https://plus.google.com/108070380341695510358/posts/CkReJnkKPjz

Motobins immediately agreed to look at it and repaired it quickly. Many thanks to them.  Very Happy

It is now back on the bike and it is all ready to go.

I think the cause of the failure was the new splines being slightly loose meant that the weld took all the vibration and shock loads making it crystallize in short order.

At least it was easily fixable and not buried deep in the motor  Very Happy

    

8Back to top Go down   No Drive to rear wheel Empty Re: No Drive to rear wheel Mon Apr 18, 2016 9:47 pm

K75cster

K75cster
Life time member
Life time member
Well that will surely do it, Hope this weld holds for much longer


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

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