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Trek 7000 Mt. bike's crank will all of sudden start spinning free as I peddle. Seems to happen more in wet conditions.

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  • clint969 May 11, 2010

    Do you mean that the cranks turn but the chain doesn't? Or is the chain not turning the rear wheel?

  • matthew kuhl May 11, 2010

    Are the teeth of the chainrings and cassette good? Do you need a new chain? If you take it to a bike shop, they will be able to tell you if your chain needs replacing.

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  • Expert
  • 90 Answers

Your gear wheel,
the one on the wheel,
need to be changed,
the feeder in it is damage.

Posted on Dec 01, 2009

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