New chain & sprockets - new whining noise?
 

I've just fitted a new DID chain and new sprockets to my SV650S K3 and adjusted chain tension to about 25mm (manual says 20-30mm). But the bike's got a new whine.

It's more of a background whine, most noticeable at low speeds (10-40mph), is not gear specific and is loudest when under load (ie: throttling up). I have been told it's quite usual for new chains and/or drive sprockets to whine but this info is anecdotal from other bikers, not from anyone who really knows.

Oil level is OK BTW.

Re: New chain & sprockets - new whining noise?
 

Checked alignment?

Re: New chain & sprockets - new whining noise?
 

Yup. Checked alignment. Chain has a straight run through, no visible kinks etc. Sprockets are on the right way round (tooth count stamp on outside).

Re: New chain & sprockets - new whining noise?
 

If you could see a visible kink in the chain I'd say there is a pretty serious problem!

I'm assuming seeing no kinks wasnt your only way of checking alignment?

I'm not going to preach here as I havent had a new chain and sprockets on my bike yet, but I'm due one now.

I'll let you know if I notice any odd sounds etc!

Re: New chain & sprockets - new whining noise?
 

did you torque up the sprocket bolts & rear axle up to the correct setting?

Re: New chain & sprockets - new whining noise?
 

Did the original front sprocket have a rubber damper? Replacement non-OE front sprockets typically don't come with the rubber damper on the sprocket and I know a few folk who notice a whine after replacing and have put it down to this.

Re: New chain & sprockets - new whining noise?
 

Wheel/sprocket alignment was set using the scales on the swing-arms, first ensuring that the triangular-shaped widgets with the alignment markers were seated centrally on the axle.

I know they're a pretty crude but that's all there is. And, more anecdotal opinion from biker mates, alignment doesn't have to be spot on.

Re: New chain & sprockets - new whining noise?
 

Yup. 145Nm on the front, can't remember what the back was off the top of my head.

Re: New chain & sprockets - new whining noise?
 

Aha, I have no knowledge on what mechanical knowledge you have, was basically just ensuring you weren't just eyeballing the alignment and calling it fine!

Now that has been established - next!

Re: New chain & sprockets - new whining noise?
 

have you checked the rear wheel bearing?