Crank Size

Discussion in 'General Bike Discussion' started by KFaulkner, Jul 27, 2009.

  1. KFaulkner

    KFaulkner Guest

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    How can you determine the crank size on your bike?
     
  2. hophead

    hophead New Member Tavern Member

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    According to Peter White your crank length should be 18.5% of the length of your leg measuring from the top of your femur to the floor.
     

  3. Sean

    Sean New Member

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    It is usually stamped on the inside of one of the crank arms.
     
  4. tajcrews

    tajcrews New Member

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    Look on the inside of the crank arms. It should be stamped such as 170, 175, etc.
     
  5. Sean

    Sean New Member

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    ^^ No, that will not work at all...
     
  6. tajcrews

    tajcrews New Member

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    Whoops didnt even read your response before i posted. Hopefully that will actually work :D
     
  7. bantam700

    bantam700 New Member

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    Have you looked on the inside of your crank arm? It's usually stamped on there :D
     
  8. hophead

    hophead New Member Tavern Member

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    Apparently, I may have misread the op's post. Anyway, if the length is not stamped into the crankarm, simply grab a ruler and measure it. Crankarm length is measured in millimeters from the center of the pedal shaft to the center of the bb spindle. If your ruler doesn't have metric graduations, the conversion factor for inches to mm's is 25.4.
    [​IMG]
     
  9. vassago

    vassago pedal pusher

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    the OP did not say he wanted to know where it is located, but how to determine what it should be?
     
  10. hophead

    hophead New Member Tavern Member

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    That's what I thought at first, but after reading the post a second time, I'm not sure because of the wording. Either way, I think all the bases have been covered.
     
  11. Chainset

    Chainset Guest

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    @hophead

    Thanks a lot for the picture, I've just found this thread through search and I found the answer thanks to you.
     
  12. hophead

    hophead New Member Tavern Member

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    Glad it helped!

    -Scott