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Thread: "BCD" question

  1. #1
    mtbr member
    Join Date
    Nov 2013

    "BCD" question

    I've got an old Cannondale mountain bike with an equally old XT crank set, 5 arms on the spider, with about 55mm between the adjacent bolt holes. Can anyone do the math to figure out what the diameter of the spider's bolt circle is? I suspect 94, but I'm not sure.

    Charlie Koster
    San Gabriel, CA

  2. #2
    the new Gilbert Grape
    Reputation: laffeaux's Avatar
    Join Date
    Jan 2004
    Each bicycle owned exponentially increases the probability that none is working correctly.

  3. #3
    mtbr member
    Join Date
    Nov 2013

    BCD Question

    Quote Originally Posted by laffeaux View Post

    Got it, thanks very much.


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