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  1. #1
    mtbr member
    Reputation: dobre shunka's Avatar
    Join Date
    Nov 2006

    Question for On One Fatty owners

    Building up my Fatty to run a double crank I hit an issue.

    Iíve got a FSA Alpha drive crank with a 36 outer chainring mounted to a FSA Platinum 100 x148 BB. If I fully tighten the crank down, the outer chaining will hit the chainstay so I guess I need a longer spindle than 148 mm.

    Before I go buy another crank and BB, what setup is everyone else using to run a double crank?

  2. #2
    All fat, all the time.
    Reputation: Shark's Avatar
    Join Date
    Feb 2006
    Need a spacer behind the BB cup on that side maybe??

  3. #3
    mtbr member
    Join Date
    May 2009
    It was posted in the On-One Frame thread that you need a 32 (or 34?) tooth or smaller to work with the typical setup. The spacer idea might work too. Let us know if you figure it out. You might check that thread for more ideas. Maybe the spacer idea is in there too. I can't remember.

  4. #4
    mtbr member
    Reputation: dobre shunka's Avatar
    Join Date
    Nov 2006
    A 32 ring clears the stay by about a 1 mm. I need about 3.5 to 4 mm to get 36 to work so I may try a spacer and see what happens.

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