• could it have slipped down on the rear cassette so the chain slackened suddenly?

  • Maybe. Earlier on the same ride home it had slipped for a half turn which made me whack my knee but didn’t come off or anything. Had a look but couldn’t see what had happened. Chain was still in place everywhere it should have been.
    I’m just going to swap out the lot, I don’t like Shimano anyway but I don’t trust the cassette and chain any more

  • I don’t trust the cassette and chain any more

    after I came off my first fixed gear when some twat ran out of london bridge and straight into me in the middle of the road there was some sponginess to the right pedal on the remaining ride to work and on the way home. ordered a new chainset and took it round @Stonehedge gaff to use his tools to replace it. when we flipped it over the entire bottom bracket shell was being held to the rear triangle and seatpost by about 2cm of metal which was acting like a very fragile form of suspension for the entire bike when i pressed down on the pedal.

    I always check my whole bike after I come off now not just the bit i think is broken.

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