Clutch/Gearbox :GS:GS:GS:GSknow's what

[(RIP) maverick]

This morning leasurly driving down Tulse hill road at about 20mph. Nothing strange and for a change little traffic and all in all a good Monday morning. Idling down the hill I open the throttle slightly and nothing? Maybe I did not select 5th gear, re-select and still nothing. I slow down and go through my gears and the only sound I hear is an afwul noise when I pull the clutch in?? Stopped and get the bike on it's center stand. I can turn the wheel and it does not sound like the drive shaft has snapped but there is this ominous sound coming from the front of the gearbox.

Now could it be the input shaft splines has stripped and how is this possible?
Or can clutch/pressure plate failure cause something like this. The current clutch has not even seen 3000 miles yet. Anybody ever have this happening to them.

I am very very close to call it the day on BMW and biking as a joke is a joke but you don't open an umbrella in someone's ass!!

 

[richie]

Keep yer chin up Maverick....

 

[(RIP) Yosi]

Dirk:
It sound like a U joint failure. try to pry open the rubber cover on the driveshaft and see if the shaft is actually rotating. Do the same at the front joint.

If not, it seems to me some sort of clutch failure...

Leave a message on the AdvRider web site. The American seems to mess more with the inners of the bike than the British...

 

[The Mechanic]

Sounds like....

You could be right on the ball with the clutch centre causing the fault, its possible the centre plate was 'flexed' too much wben the gearbox was offered up; this will weaken the centre or even cause a stress fracture.

Doubtful about striping the spline off, but you never can tell.

Diagnosis at a distance is difficult!

Are you serious about giving up or were you just p*ssed off with B*W?

Hope the problem is (relatively) easily fixed, if the driveshaft is ok then the fault will most certainly be inside the box/clutch housing.

Drain the gearbox oil and look at the oil, run a magnet through it to collect any 'evidence'.

 

[The Mechanic]

OH and this to....

Sorry, try the gear selector it could just be that the mechanism is not moving the selector shaft/lever and you are almost in gear hence the noise; hope thats it!

 

[(RIP) maverick]

Re: Sounds like....

Are you serious about giving up or were you just p*ssed off with B*W?

Tony I think if there was a lemon out there this bike is the root of the freakin tree. In less than a year I had less joy than enjoyment and you have to start thinking whether it is worth the time and effort when something like this happens.

Don't think I will ever give up biking just need to re-asses the situation and calm down again. The selector selects all the gears fine but it does not engage on the engine side by the sound of things. The little centre plate did jump out when we put the gearbox back and I had to strip the clutch down to get it in place again

I can move the back wheel and hear everthing turning in the gearbox so that sort's of let me think the shaft is ok. Will check in due time when it is hotter and I have gained enough momentum not to burn the piece of metal to the ground.

For time being it is back to the train for me.

Cheers

 

[Steptoe]

dirk, oh dirk, you didn't did you, don't tell me you didn't; did you use an old input shaft and pushrod to line up the new clutch/gearbox when you put it in recently. sounds like the splines have worn/torn on the clutch friction plate; when you redo it (?) you can use my input shaft and pushrod to line it all up, ( i hire it out by the hour )

don't give up, its only a few hours work

 

[Mick Fagan]

Which bike did this happen to?

Was it an early 800 or a recent 1100/50 model?

There is a bit of a difference, although the basics are the same.

Mick.

 

[(RIP) maverick]

dirk, oh dirk, you didn't did you, don't tell me you didn't; did you use an old input shaft and pushrod to line up the new clutch/gearbox when you put it in recently. don't give up, its only a few hours work

Ermm don't be silly why would I line it up. Unfortanetely NO. Why would this make a big difference as it either goes into the splines or it does not? Surely these clutch/friction plates can't be that soft that it just strips or tears apart

Mick - It is on my R1100GS 94' model.

 

[Steptoe]

Ermm don't be silly why would I line it up. Unfortanetely NO. Why would this make a big difference as it either goes into the splines or it does not? Surely these clutch/friction plates can't be that soft that it just strips or tears apart

Mick - It is on my R1100GS 94' model.

thats that solved- the splines wear on the centre of the friction plate because its not central with the gearbox input shaft-- it happens on K series models as well- supplies me with a good income D ) you can borrow my centering tool when you redo it Dirk, hopefully you haven't worn the input shaft splines as well-- ( they should be ok, just wanted to worry you)

 

[Jimb]

Bad Luck

My god maverick if you did'nt have bad luck you wouldn't have any luck at all.

 

[(RIP) maverick]

Re: Bad Luck

My god maverick if you did'nt have bad luck you wouldn't have any luck at all.

LOL yeah might you right at least there is still some luck about.

Just a thought, is it at all possible that the pushrod has snapped and what affect would this have? Is it possible to pull the pushrod out when the swingarm is off and check it before I go all the way with stripping the gearbox out at some point in the future.

 

[Steptoe]

if the pushrod has snapped it wouldn't give the symptoms you describe, the bike would still have drive, but you would have increasing trouble disengaging the clutch and putting it into gear---------------- nice try Dirk.

 

[(RIP) maverick]

if the pushrod has snapped it wouldn't give the symptoms you describe, the bike would still have drive, but you would have increasing trouble disengaging the clutch and putting it into gear---------------- nice try Dirk.

With my luck you never know mate