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  1. #1
    mtbr member
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    Nov 2010
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    6

    Seatpost diameter for 2012 Rift Zone 29er

    My seatpost/saddle "disappeared" (I left it behind when packing up at a trailhead and when I returned it was no where to be found). I never noticed what the post diameter is (I haven't had the bike very long) and now that I need another I need that info. 31.6 would have been my guess, but when I measure, with calipers, the inside diameter is out of round and no dimension is that big. Taken at three points I'm getting 31.54 (straight across, perp to the long axis of the bike), and 31.31 and 31.34 (taken in an "x" pattern diagonally across the long axis of the bike). So now I'm thinking the much less common 31.4. Does anyone have a post they could look at and see if it's marked? Thanks.

  2. #2
    Papa T
    Reputation: Numb Bum's Avatar
    Join Date
    Mar 2004
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    261
    Keep your head tube up!
    2012 Marin Mt. Vision XM Pro
    2009 Jamis Dragon ONE

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