The strangest of noises

[buggerit]

Does it happen in gear with the clutch in?

[the bear zxr]

So, I'm going to go on the basis that it is the final drive bearing.... and just hope like hell thats the problem... now the challenge is to remove the old one...: the catch: I'm NOT pulling the engine apart... I'm not even gonna take it out of the frame...

Has anybody ever attempted something like this? (removing a bearing, accessible only from the side that it needs to come OUT of, and with the shaft still in place....? I'm thinking along the lines of breaking the inner ball cage apart, removing the balls, then applying heat to remove both the outer and inner races separately... If anybody has any advice or experience I would love to hear it!

(please leave your negativity at the login screen: this place is about advice and exploration..... not "it can't be done" comments which may often be proved wrong!!!)

Cheers guys, Photos will be posted of the operation once it has been attempted!

[the bear zxr]

Does it happen in gear with the clutch in?

Yes, it does

[Katman]

As in the first post, yes, it occurs in all gears, when the engine is running or not, whether the clutch is engaged or not

So if the bike is in gear with the motor not running and the clutch not engaged, how have you determine that the noise is still there?

[Katman]

Has anybody ever attempted something like this? (removing a bearing, accessible only from the side that it needs to come OUT of, and with the shaft still in place....? I'm thinking along the lines of breaking the inner ball cage apart, removing the balls, then applying heat to remove both the outer and inner races separately... If anybody has any advice or experience I would love to hear it!

The bearing will not come out without the cases being split.

The shape of the case castings holds the transmission bearings in place.

[the bear zxr]

So if the bike is in gear with the motor not running and the clutch not engaged, how have you determine that the noise is still there?

ok, this seems to be causing a great deal of confusion, let me clear it up:

If the bike MOVES, it makes the noise.... unless it is in neutral

[bogan]

Does it occur with the engine running and bike in neutral?

It sounds like something in the gearbox, but not happening in neutral suggests it might be the gearbox input shaft rather than the gearbox output shaft...

I'd do a bit more diagnosing before replacing something anyway.

[Katman]

ok, this seems to be causing a great deal of confusion, let me clear it up:

If the bike MOVES, it makes the noise.... unless it is in neutral

So how are you moving the bike if it's in gear with the motor not running and the clutch lever not pulled in?

[the bear zxr]

So how are you moving the bike if it's in gear with the motor not running and the clutch lever not pulled in?

on a hill................

how do you crash start a bike......?

[the bear zxr]

Does it occur with the engine running and bike in neutral?

It sounds like something in the gearbox, but not happening in neutral suggests it might be the gearbox input shaft rather than the gearbox output shaft...

I'd do a bit more diagnosing before replacing something anyway.

Hmmmmmmm, fair point: I'm not sure how I over looked that detail... neutral should still make the output shaft click... but the input shaft will follow the signs I have..

Oh hell, deeper and deeper the problem goes!

[buggerit]

If it happens with bike in gear and with clutch in the bearing behind the sprocket is not rotating to create noise.

[Murray]

(please leave your negativity at the login screen: this place is about advice and exploration..... not "it can't be done" comments which may often be proved wrong!!!)

Welcome to kiwibiker - you have much to learn - may the force be with you

[bogan]

Hmmmmmmm, fair point: I'm not sure how I over looked that detail... neutral should still make the output shaft click... but the input shaft will follow the signs I have..

Oh hell, deeper and deeper the problem goes!

It's not a certainty, as it could be just the extra torque from spinning the input shaft is making something on the output shaft click... The final drive bearing is by far the most common thing to fail in a gearbox I think.

Its a kwaka, get used to that shit

[EJK]

(please leave your negativity at the login screen: this place is about advice and exploration..... not "it can't be done" comments which may often be proved wrong!!!)

Cheers guys, Photos will be posted of the operation once it has been attempted!

[the bear zxr]

Its a kwaka, get used to that shit

Indeed!!!! a quick torque test on the output shaft (lunchtime sprocket removal!!!) and hopefully I'll be able to decipher which end I'm dealing with! god its a pain, but i do love 19,500rpm faaaar too much to think of selling it, at least until I grow up!!!