gearbox blues

[gazzar]

Evnin all,can anyone give me a possible cause of this problem.loss of drive to wheel in any gear, and a grinding bearing sort of noise when engine running, but the noise goes when the clutch is pulled in. got the bike ready to pull apart, but what should I be looking for,clutch, thrust bearing, gearbox. any help much appreciated

 

[MattW]

I'll ask the question that others will need answering before they can help:

What bike have you got (your profile says R110GS )?

When you say loss of drive, can you actually get it in gear?
How does the clutch feel (can you feel it working against the clutch springs)?

If the clutch is ok, it could be (hopefully not) gearbox input shaft splines.

I'm sure others will chip in.

Matt

 

[ahutcheon]

Sounds a bit consistent with clutch center and/or gearbox input shaft splines, but others know more than me...

 

[gazzar]

sorry, should of said, its a 95 1100.it feels like theres pressure on the clutch lever, & the gear indicator shows it changing through all gears.what happened was, travelling along motorway, felt, what seemed like 2 impact shocks, as though some thing had flicked up & hit the stand,pulled over(but still with drive) put it in neatral, to check, put it in gear to pull away,& no drive & this noise, with the started motor off, clutch looks fine, and whilst spinning the rear wheel, get a clonk, clonk, clonk, (stop me if i'm getting to technical)from the location of the gear box, I'm sort of hoping it's just me tyre needs air, but I susspect not

 

[Timolgra]

uj or drive shaft

 

[MattW]

This sounds like a Steptoe question - I'm sure that he (or one of the other guru's ) will be able to help you narrow down on the problem.


edit:
There ya go - a guru (Timolgra)!

 

[Timolgra]

edit:
There ya go - a guru (Timolgra)!

I'm no guru, that was a wild guess

 

[Steptoe]

If you still have all the gears it can be either the centre splines on the clutch plate/gearbox input shaft. Or the U/J or driveshaft.

 

[gazzar]

Thanks all, shall be entering into the mystic void of the transmition with renewed vigour hoping i can stop before the box, will let you know.

 

[Voyager]

Thanks all, shall be entering into the mystic void of the transmition with renewed vigour hoping i can stop before the box, will let you know.

Faint hope I'm afraid.

If you're getting a grinding noise with the engine running and the gearbox in neutral its unlikely to be anything to do with the driveshaft

We need pictures

(Best of luck with it).


Bob.

 

[Steptoe]

Faint hope I'm afraid.

If you're getting a grinding noise with the engine running and the gearbox in neutral its unlikely to be anything to do with the driveshaft

.

He says - in neutral, turning the wheel by hand there's a clonking coming from the rear of the gearbox area. = Which could be U/J on the drive shaft. They can and do snap at the U/J.

 

[gazzar]

Oh Woe is me,rear intermidiate shaft bearing gone big time, thanks for all the tips though, much appreciated, It just remains for me to say.......wait for it......ANY BODY GOT A GEAR BOX?

 

[MattW]

Oh Woe is me,rear intermidiate shaft bearing gone big time, thanks for all the tips though, much appreciated, It just remains for me to say.......wait for it......ANY BODY GOT A GEAR BOX?

Bad news gazzar

Have you thought about getting it rebuilt? I've heard good things about scriminger:
http://www.scriminger.co.uk/

 

[D6]

either way ,u gotta take it apart

 

[gazzar]

got the box off, lots of swarf on drain down, had a look in, it's bad man! total collapse of bearing, cogs mullerd,casing,worn down & chipped. fink I need a nuva one

 

[Steve.f]

sorry, should of said, its a 95 1100.it feels like theres pressure on the clutch lever, & the gear indicator shows it changing through all gears.what happened was, travelling along motorway, felt, what seemed like 2 impact shocks, as though some thing had flicked up & hit the stand,pulled over(but still with drive) put it in neatral, to check, put it in gear to pull away,& no drive & this noise, with the started motor off, clutch looks fine, and whilst spinning the rear wheel, get a clonk, clonk, clonk, (stop me if i'm getting to technical)from the location of the gear box, I'm sort of hoping it's just me tyre needs air, but I susspect not

Mate i know youv'e got problems but the "i'm sort of hoping it's just me tyre needs air" quote feckin awesome LMAO

Steve.

 

[gazzar]

Cheers Steve, thats chuffed me right up, so much so, that shall now step away from the bloody stain that seems to have appeared on the wall,just where my head seems to have developed a strong urge to strike it quiet violently

 

[D6]

was a prob on early boxs but usually only 3rd?
ugg has some spare box parts but i suspect u want a replacement?
motorworks do em, others will tell you elsewhere too, shortly, id think

 

[gazzar]

yes mate s/h one, is it post 79 i want? if u know. prob do bevel box bearings as well. "life is like a box of chocolates" yeah, well i keep getting the bloody toffee ones and pull a filling out!!!! homme neh herangaque... (go on then, you spell it)

 

[D6]

pm ugg , he knows more bout these things, or the god known as steptoe, i should think u will get a sensible reply of one of em
(edit) u aint a member u cant pm, sorry