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  1. #1
    mtbr member
    Join Date
    Apr 2015

    100mm Eccentric Bottom Bracket?

    Trying to make a pre-alternator Mukluk into SS.

    Anyone have ideas?

    I've read that Problem Solvers PF30 can be extended with the right bolts but wouldn't have any idea what size or where to get them.
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  2. #2
    mtbr member
    Reputation: Velobike's Avatar
    Join Date
    Jun 2007

    The larger effective diameter can interfere with the granny ring mounts on some cranks (it did with mine) but this can be solved by spacing the crank out a bit if needed (assuming it allows this), or as I did, simply grind them off.

    You also need their tool.
    As little bike as possible, as silent as possible.
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  3. #3
    mtbr member
    Reputation: bikeny's Avatar
    Join Date
    Feb 2004
    What kind of BB shell does your Mukluk have? If it's threaded, I think you only have 2 choices, the above Exzentriker, or the Phil Wood Philcentric.

    If it has a PF30, than there are more options. None marketed directly for 100mm BB though. The Problem solvers, Niner Biocentric II PF30, etc. will work, you just need to source 30mm longer bolts.

    I'm using a Niner Biocentric II PF30 on an 83mm BB fat/29+ bike with great results.

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