Cycling Equipment · Public discussion

ISO Vs JIS For ISO Crank

Started by Gary Jacobson · · Last activity · 2 posts · 745 views

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Cycling Equipment
Published
1 July 2005
Last activity
2 July 2005
Original author
Gary Jacobson
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  1. Is there are rule of thumb to guide me to select the proper length of an ISO
    spindle if I know what size JIS spindle gives the proper chainline with a
    ISO crank?

    In other words how much "deeper" would an ISO crank be drawn in, at the same
    torque value, than it is with a JIS spindle?

    (I want to use a ISO Mavic VTT crank on a Riv. Atlantis frame.)

    Thanks for any help.

    Gary Jacobson

  2. Gary Jacobson said:

    Is there are rule of thumb to guide me to select the proper length of an ISO
    spindle if I know what size JIS spindle gives the proper chainline with a
    ISO crank?

    In other words how much "deeper" would an ISO crank be drawn in, at the same
    torque value, than it is with a JIS spindle?

    Maybe about 4.5mm, but this is extrapolating from the behaviour of a JIS
    crank on an ISO spindle.

    http://sheldonbrown.com/bbsize.html#square

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