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  • Would the chainring be more of a likely culprit? Whatever the cause is, the slipping is happening at the cassette/ rear DR.

    To clarify, it’s not skipping, rather it is slipping/jolting forward, as if the chain has slid over a tooth or the rear hub has rotated, happening when I’m applying a sudden peak in power/get out of saddle. I’ve had something similar happen when the cassette lock ring hasn’t been tightened enough, although that’s not what’s happened here.

  • Maybe you’re right. I’m sure a new one and a chain will sort it. Do get it sorted though, I went over the bars once after getting out of the saddle to pedal hard and my chain slipping in the way you describe. Cranks spun with no resistance and I chucked myself off the bike essentially. Broke my helmet, glasses and saddle annoyingly.

  • Christ, yeah, I don’t want that happening. I’ve been very cautious riding it home.

  • I went over the bars once after getting out of the saddle to pedal hard and my chain slipping in the way you describe.

    I did that on a poorly-adjusted Sturmey Archer 3 speed hub, and ended up landing face first on the very pointy railings outside the University Library in Cambridge. I still bear the scars.

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