noisy chain

mornin all, yesterday i fitted a 47t rear sprocket and new chain, first of all it has made a difference to accelaration (pulls off quicker) although the bike does rev slightly higher than normal, the thing thats bothering me is that i decided to go for a heavier chain than standard, now when i apply the throttle i can hear a noise that was'nt there before, i'm hoping it's just the sound of the heavier chain. has anyone else had this noise or should i go back to standard chain?

ANY IDEAS PLEASE!

You tend to get more chain noise when a new one is fitted and at the right tightness. Just make sure that it aint too tight or too loose thats the main thing.

[jambo]

Hi,
When you say you've gone for a heavier chain, I assume you're still on a 525 pitch chain, just a different manufacturer and spec? Make sure it's well oiled (being new, should be fine, but will be greased not oiled, no idea if that'll make a difference). Have you checked the front sprocket is OK?

Jambo

Edit: Also, as vardy points out, check chain tension

What he said

Could it be that you haven't aligned the rear wheel, making the chain/rear sprocket slightly "twisted" ?
Mike

Check it is lubed and aligned correctly.

thanks for all your replies, i've altered tension slightly and lubed it more, noise still there but not as much, i think it 's just the fact the chain is heavier.

Probably needs running in a little. Did you change both sprockets? And why did you go for a heavier chain anyway?