Noticed a whining noise since the last ride, can`t say I have noticed it before, sounds like a bearing to me, took the gen cover off and no movement at all at the crank or balance shaft, goes away at tickover comes back when you rev the bike, bike itself runs as it always has?

Any ideas? does it sound teminal!!

Balance shaft bearing.
Mike

I suspect FMtB is correct.

Is it likley to go bang if I carry on riding it? I take it the bearing is a complete engine strip?

Thanks

If it is a balance shaft bearing then it won't go bang and it won't need an engine split.

There is more info in the Faq section.

Thanks for the replies, does the needle roller come out from the generator side? so is the tool for putting through the clutch side to knock the bearing out?

Thanks

Yes and yes.

Thanks mate, I am planing on one more ride, with the whine and then try to remove the needle roller without spliting the engine!

Cheers to all the replies it is a nice forum this

There is a good chance that the balance shaft itself will have some chatter marks on the bearing face.
I know mine did so i fitted a new shaft along with both bearings only for the same thing to happen a couple of thousand miles later.
I ended up disconnecting the balance shaft. That is leaving it in but taking the gear off and replacing it with a spacer. No more noise.

The job can be done in a couple of hours if you get yourself sorted first.

Give it a go and see if the vibes bother you. it smooths out a lot when it warms up.
If you dont like it just replace the worn bits and reconnect it.

Hi Eddie, I remember you talking about disconnecting it, was planning on going on a ride this Sunday, bike should be OK for that one ride? there is no play at the generator end, I will prob strip it next week after the ride, what you reckon?

Mark

It is unlikely to get so bad as to cause any damage for a long time.
It's just the noise it makes that worries people.

Years of running left in it yet.
Mike

However if its come on suddenly.....................and not gradually may need looking at sooner than later.

xander77 wrote:Noticed a whining noise since the last ride, can`t say I have noticed it before, sounds like a bearing to me, took the gen cover off and no movement at all at the crank or balance shaft, goes away at tickover comes back when you rev the bike, bike itself runs as it always has?

Any ideas? does it sound teminal!!

No report of any increase in vibration.
Mike

Yep it was sudden I think, last ride out it was feeling a little laboured now and again? but all will tell Sunday cause I am off out on the lanes! no more vibs than normal and no movement on the crank or the balancer shaft end? with the cover off and a screw driver?