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Chain hop

Discussion in 'Beginners' started by tredder, 23 Mar 2008.

  1. tredder

    tredder New Member

    Location:
    East Anglia
    This is sometihng I have experienced before but never thought to ask.... When in a particular gear, my chain occasionally 'hops' over the currently selected cog. Is this because of a worn cog, chain, other?

    Assuming solution is replacement of rear cassette,chain, other?
     
  2. roadiewill

    roadiewill New Member

    Location:
    Wiltshire
    cog could be worn down, would have to have taken a fair amount of abuse to do so. how old is the bike?
     
  3. Gerry Attrick

    Gerry Attrick Lincolnshire Mountain Rescue Consultant

    Yep. Worn cassette, chain or both.
     
  4. heretic

    heretic New Member

    Location:
    In the shed
    I've got one that does this trick - cassette fine, probably 1700 miles, chain's done 600 ish, it works fine on all gears in outer & middle, but granny ring 2nd jumps like a frog in a frying pan. I suspect the rear mech top jockey roller's shot. The bottom one was just a ring of plastic when I changed it at Xmas, the top one's probably got no teeth left. We'll see tomorrow if it's not snowing.