Gearbox rough at low RPM? anyone had a box go bang?

beaver said:
But is it a knock every so often.. or like mine 4 or 5 times a second until you change something?

I did read the damper bit last night.. and that might help the issue on 2017 on bikes.. but just curious if others feel it?
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It’s a sporadic knock not regular at all. I always associated it with bumps which is why I thought it was the centre stand knocking.
 
spoonz said:
It’s a sporadic knock not regular at all. I always associated it with bumps which is why I thought it was the centre stand knocking.
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yes.. thats like my 3rd then.. but 5th has this small tapping feel
 
Moving the analysis outside the gearbox, I guess it could be a stiff shaft UJ dropping off centre. Maybe water ingress or lack of lube from the factory.
 
squibb34 said:
Moving the analysis outside the gearbox, I guess it could be a stiff shaft UJ dropping off centre. Maybe water ingress or lack of lube from the factory.
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But only in 5th?.. i'm tending to go more the other way.. input side of gearbox maybe.. even clutch?... that said, its only a very light tap so maybe one of those things that goes away?
Shaft is fine. It was off January time this year for a full inspection, paint and lubrication ...
 
Mine has never got any worse or better and it’s always been there. I had the clutch apart to fit the updated push rod and nothing was loose or worn etc. I’ve also had the shaft out or greasing.
 
spoonz said:
Mine has never got any worse or better and it’s always been there. I had the clutch apart to fit the updated push rod and nothing was loose or worn etc. I’ve also had the shaft out or greasing.
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Yes, one of those issues where you pull it in bits and can't find a thing. So the clutch bearing was nice, no play etc.. as I'm sure went through your mind.. a bouncing clutch could give you a knock..
 
beaver said:
Yes, one of those issues where you pull it in bits and can't find a thing. So the clutch bearing was nice, no play etc.. as I'm sure went through your mind.. a bouncing clutch could give you a knock..
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At the time the bike only had 9k miles so I wasn’t expecting any wear but I saw or felt no play and nothing abnormal. As it happened the bike had the updated pushrod already so it was a complete waste of time ( bmw vin numbers for the non updated bikes is wrong)
 
yes.. I've done it before.. pulled engines or boxes in bits and not found a thing wrong.. best see if it develops first.. as said above, for some obscure reason, change the tyres and it may go away??.. :)
 
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