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New chain and sprockets, new noise

Old 07-18-2011, 12:09 PM
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New chain and sprockets, new noise

Another "please diagnose this noise over the internet" question.

The bike has had an on-throttle rattle in 6th gear since I bought it 3.5 years ago.

I had the sprockets and chain replaced by a shop I trust a couple weeks ago. I still have the noise, and I also have what sounds like a gear whine. It's also on-throttle only, but appears to increase in frequency as I upshift, so it's at its highest pitch in 6th.

It's a DID, I believe a 520, don't have the invoice handy. It's my first new chain - is this normal? Break-in needed? Should I bring it back to the shop? Thanks for any pointers.
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Old 07-18-2011, 12:24 PM
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Well it is really hard to tell but a few things.....

What is the rear sprocket made out of? And is it a different type of sprocket or material than the one you replaced?

Also the chain could be too tight, how much free play does the chain have?
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Old 07-18-2011, 01:33 PM
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are the rubber/plastic chain guides on the swingarm ok? Also be sure of the clearance of the chain on the exhaust pipe just under the front.
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