Keeps jumping out of gear

Bagpuss12
Bagpuss12 Posts: 2
edited March 2017 in MTB workshop & tech
I have a 2010 Specialized Hardrock MTB. Whenever I was in the smallest rear cog it kept jumping and upon looking it was clear that the rear cassette was damaged around this cog. I have replaced the rear cassette and fitted a new chain whilst I was at it but I'm still experiencing the same problem. It only jumps when it is in the smallest rear cog and there are no issues with the other 7 rear cogs or the front 3 cogs????

Comments

  • JGTR
    JGTR Posts: 1,404
    Have you checked the gears are adjusted correctly ot that the hanger is not bent?
  • JBA
    JBA Posts: 2,852
    It sounds like your gears may need indexing. There are plenty of 'how to' videos and guides on the web. e.g. HERE
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