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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
    78 Raleigh Professional__ 80 Ranson______________ 80 unknown French
    82 Peugeot PXN10______ 83 Trek 620 (nee 600)____ 85 Gianni Motta
    85 Trek 560___________ 88 Guerciotti GLX________ 90 Miele Gara
    02 Casati Dardo (g/blue)_ 02 Casati Dardo (y/blk)___ 03 Casati Dardo
    08 BF IRO (fixed/SS)____ 09 Dogma FPX magnesium_ 10 Vassago Fisticuff (IGH)

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