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  1. #1
    mtbr member
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    May 2004
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    AC Sizing 17" or 18"

    I'm buying an AC1 frame to build. I am 5' 8.5" and 180 lbs. My inseam is only 28" and I have a long torso. I've been on a 17" AC1 bike but am wondering if it is too short for my torso. Would I be able to straddle an 18" frame comfortably?

  2. #2
    San Diego County
    Reputation: Duzitall's Avatar
    Join Date
    Feb 2004
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    1,475
    Small: top tube is 565mm, seat tube is 430mm
    Med: top tube is 585mm, seat tube is 455mm.

    So I assume the stand over is 7/8" taller and the reach to the handlebars is 3/4" longer on the 18" medium frame.

    Hope that helps. Have fun,

    Chris
    Quote Originally Posted by turnerbikes View Post
    Of course the easiest way to fix this is to go for a hike.
    DT

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