Whining noise

First topic message reminder :

Just been out on the bike & started to hear a whining noise, vague I know but's it all I can say to describe it.
I can't really hear where its coming from but is still evident when I have the clutch engaged.
Was thinking wheel bearings but have had a check on front & rear and there appears to be no excessive play in either. Also whilst free wheeling with no engine running I can't hear anything.
Is it just gremlins or any other ideas.
Just had new C&S so maybe need to look at adjusting??? (a bit of inspiration then)

Just remembered I have just changed the clutch cable & adjusted it both ends so I'll maybe look at that aswell


Cheers

Sorry about the wind noise but is this the 'cat whining gearbox????


https://www.youtube.com/watch?v=AD1SUkCfa5o

Damn that's loud! Much louder than mine anyway.
Just out of interest does it make any noise if you run it while up on a stand? Or Is there any obvious noises when you spin it by hand?

Doesn't make any noise when spinning wheel or when free wheeling.
A lot of the excess noise could be my can aswell 
New tyre tomorrow so wheel is off at the mo. Will check sound when I put wheel back on
Back to work aswell so don't know when I'll get chance

Done about 400 miles this week and doesn't seem to be getting louder
May be a visit to local mechanic just to put my mind at ease

All I was thinking is that if you put it up on a paddock stand and run it in first gear.
If it still makes the noise then it's definitely something to look into.
If it doesn't and it only makes it under load then I'd look into the sprocket bearings.

But to be honest if you've got a mechy you can trust then it's worth taking it in just for peace of mind.
Just make sure it's not some cowboy who's gonna play on your insecurity and fix an imaginary problem......... I've been stung that way before :-(

Transmission whine in all gears is very often a symptom of a too-tight chain.  In my experience workshops (and tyre fitters) often err on the side of tightness, maybe because it's good for business when the gearbox and rear sprocket bearings fail prematurely.  

I seem to remember adjusting the chain on my 'Cat so you could just lift it enough to touch the guide on the bottom of the swingarm, with the bike on the sidestand.  Ideally do a second check with a (heavy, if possible) mate on the pillion seat to make sure the chain isn't tight with the suspension at mid-travel.

Adjusted chain as yamaha suggest BUT my gut feeling is its still too tight 
So going to get a piece of excess baggage (mate) to sit on the back and try that

Yeah mine turned out to be huge tight spots in the chain. So need new chain and sprockets and since it was making the noise in the first place I'm going to replace the sprocket bearing too. But as soon as the chain was slacked off a bit it lessened the noise

C+S changed 2k ago but it's a triple s chain which by all accounts were OEM but are c**p.
If I remember correctly the whining only really started after I took my wheel off to clean the swingarm to check it's condition.
Left the chain a bit slacker after replacing the tyre but going to get someone to sit on it and check again

HAD ENOUGH NOW!!!
Going to watch the Ashes next week so she's going in to see if it's me or her!!!!
Slackened chain. Tightened chain I give up. 
Hope it's gremlins!!!!!

Well she's back with a clean bill of health. 
Mechy actually slackened the chain
 
and now it's just touching swingarm. Said C&S but if it gets any worse take it back. Does sound a bit quieter but will wait until I have had a good run out. 
Had a quick look over her too and found nothing untoward

30 quid well spent for peace of mind

Same as mine then, except after 2 weeks with a new c&s mine has started to make the intermittent grinding noise again, I'm convinced it's a bearing but don't wanna seem like a pain in the Arse taking back to the mechy complaining again haha will just wait and see if it gets worse again :-(

If it's a failing bearing within the drivetrain or wheels then I'd reccomend finding it as soon as poss, if it fails properly on you then it could get a little hairy at the time!

Not got a grinding noise at all just the whine!!!
Does seem a bit quieter and also had a bit of inspiration by listening to some other cats on you tube.
Some sound a darn sight worse than mine & some sound a darn sight quieter!!
So overall i'm a lot happier.
Might stick with an OEM front sprocket next time I change, which I hope will be a few years yet with a scottoiler installed!!!

OH - WHERE'S THE BLOODY SUMMER GONE!!!!!!!!!!!!!

I've noticed with mine that the whining I'd worse in 2nd and 3rd gear to the point where I can but riding in 4th quietly and when I drop down for a corner I instantly hear the whining. To be honest I'm not worried about it anymore. The grinding on the other hand I may need to get looked at lol