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  1. #1
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    upgrading french crank system

    Hi, I'm new- to bikes (mostly) and this forum.

    I recently came across a Follis frame (French build, little to no information available) and I'm stripping it, repainting it, and converting it to a fixed a gear for commuting. I would like to replace the crank system and bottom bracket with new parts (the old crank system is a bit rusted and banged up, and one of the cotter pins was rusted out and broke during the uninstallation).

    I'm not sure how to measure what size bottom bracket I need, and I'm not sure that the ones I'm looking at will be compatible with the crank set I'm looking at. Also (this is probably a dumb question) but does the fixed right cup stay on during the installation of of a new bottom bracket?

    These are the parts that I'm looking at:

    http://www.sheldonbrown.com/harris/f...ks.html#bottom

    http://www.amazon.com/gp/product/B00...A2TE9IQP68MWQU

    Thanks,
    Owen

  2. #2
    coprolite fietsbob's Avatar
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    French BB threading is 35mm, both RH.. , Italian is 36mm also RH

    you have to replace the whole thing..

    top dollar But Phil Wood BBs use interchangeable Mounting rings
    so you just buy the appropriate ring.

    If you don't know how to put things together Amazon won't help you,
    your local bike shop will..

  3. #3
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    Thanks for your reply. What does RH stand for?

    I know I have to replace the whole thing, the bottom bracket I linked to on Harris Cyclery is french threaded (so I'm assuming 35mm) but I'm not sure how to determine the other size (103mm, 107mm, 110mm, etc) to figure out which one I need. I'm also wondering whether that BB will compatible with modern crank systems, like the one I linked to.

  4. #4
    coprolite fietsbob's Avatar
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    Right Hand, clockwise, the most common way threads are cut.

    spindle elength is determined by what crank you have . there is a big difference

    shopping online wont answer that question.. nobody is there.

  5. #5
    slow as I ever was Ex Pres's Avatar
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    It looks like you'll need this (in 103mm) to match that crankset.

    Edit - I clicked and see Harris is now carrying the same, so you're good.
    72 special CNC ______ 72 Frejus (ala Legnano) _73 Holdsworth Record
    80 Ranson__________ 80 unknown French____ 83 Trek 600 (620 styled)
    85 Gianni Motta_____ 90 Miele Gara ________ 02 Casati Dardo #1
    02 Casati Dardo #2 __ 03 Casati Dardo ______ 08 BF IRO (fixed/SS)
    09 Dogma FPX magn_ 10 Vassago Fisticuff (IGH)

    For Sale: _________ 78 Raleigh Professional __ 82 Peugeot PXN10
    85 Trek 560_______ 88 Guerciotti GLX

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