I just bought a 2000 XCR 4000, and when I pedal sometimes there is a clunking noise. It happens when I start to pedal in a very high gear and initially there is no load on the drivetrain. When the load hits, there is this clunking sound. sometimes it's one clunk, sometimes two. It seems to happen in any chainring. It sounds like a loose BB, but there is no detectable play.
Is this a problem with the eccentric maybe? any other ideas?
thanks in advance
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