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  1. #1
    Newbie
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    Dec 2009
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    crank arm length

    k im alil outa the loop but i wanna take jr racin, got him a vintage mini. its got 152's on it but they are way too long for now, i know theres a certain way to find out how long they should be but i cant remeber, with adults it has to do w seat heights and frames but this bike is tinyfied and so should they go halfway up his calf or does anyone know? probly have to ask a road guy huh

  2. #2
    member
    Join Date
    Oct 2004
    Location
    San Jose, CA
    My Bikes
    Solid AA
    Posts
    4,751
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    http://www.maineventpress.com/subpage.html

    Inseam(")/Crankarm(mm)
    20/140
    22/150
    24/160
    26/166
    28/175
    30/180
    32/185
    34/190

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