• I dont know if this is a BB/Crank/Chain problem ... or if it's even a problem at all but....

    if I rotate my cranks backwards (essentially pedalling backwards quickly but not on the bike) I have noticed something makes a loud clunk noise on every second rotation. It sounds like it might be the chain but im not sure.

    Any ideas? and is it something I should be worried about? It doesnt seem to do if I spin forwards.

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