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  1. #1
    Open Waterbike Founder
    Join Date
    Sep 2008
    Location
    Friul, North-EasternItaly, European Union
    My Bikes
    recumbent M5 Streetlegal 28-20
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    square tapered shafts for cranks: ISO or JIS standard?

    Hello everybody

    we (at The Open Waterbike Project) are building a special transmission for a pedal boat, and we ill have it customized to have square tapered shafts for standard bicycle cranks.

    We know there are two standards for square tapered, the ISO and the JIS. From you viewpoint, which do you think is the most used for hpv in the USA and worldwide?

    Thanks in advance for your opinion and your help!

    Giuseppe 'Beppe' Carignani

    Initiator, The Open Waterbike Project http://www.openwaterbike.com/

  2. #2
    Senior Member
    Join Date
    Oct 2008
    Location
    Ohio
    My Bikes
    Franklin Frames Custom, Rivendell Bombadil, '83 Specialized Stumpjumper
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    JIS is most common.

  3. #3
    Senior member Dan Burkhart's Avatar
    Join Date
    Oct 2004
    Location
    Oakville Ontario
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    Virtually unlimited crank options with JIS. Not so much with ISO. I'd stick with JIS.
    Gearhubs demystified and other cool stuff.


    The greatest mistake you can make in life is to be continually fearing you will make one. Elbert Hubbard.

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