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  1. #1
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    will this bottom bracket work on a french bike?

    http://www.sjscycles.co.uk/product-S...reads-4521.htm

    Having some trouble finding a french threaded BB for my peugeot. Then I came across this.

    Anyone have any experience with these type of BBs? I assume it would work, but there might be something i'm missing.

  2. #2
    sch
    sch is offline
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    An interesting product, looks like one solution to the Fr thread problem.
    Not sure why they talk about 1.6mm washers, as it seems that the
    BB would accomodate any width from 68 to 73. Maybe the internal
    threading is not that robust. I would inquire about what tooling is
    used to tighten/loosen the BB and lube the internal thread with suitable
    grease. DO NOT use loktite, you would never get it off with the fine
    internal threading on the BB.

  3. #3
    Perineal Pressurized dobber's Avatar
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    From Sheldon Browns site:

    Quote Originally Posted by The Master, Sheldon Brown
    These YST bottom brackets fit any threaded 68-70 mm shell, and do not use the existing threads.

    The main unit slides in from the right side, and there is a conical lockring that screws in from the left. Uses standard Shimano splined tools.

    Uses standard industrial 61903 bearing cartridges, secured by snap rings.

    Note! Your frame must be modified (chamfered/countersunk) to permit one of these bottom brackets to be installed. This requires an expensive special tool that your local bike shop may or may not have available (same tool used for Mavic and Schlumpf bottom brackets.)

    Once the frame has been modified, a standard bottom bracket will no longer fit.

    We were initially very excited to get these in, but we found that the quality was too erratic, so we no longer carry this product.
    Having to mod the frame is a big requirement. The bottom bracket is of questionable quality. Sounds like a crap shoot.

    Have you absolutely determined that a french thread is required? A lot of Pugs, especially those produced in the 80's and beyond used British.
    Last edited by dobber; 01-15-08 at 12:54 PM.
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  4. #4
    Senior member Dan Burkhart's Avatar
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    Quote Originally Posted by pat_00 View Post
    http://www.sjscycles.co.uk/product-S...reads-4521.htm

    Having some trouble finding a french threaded BB for my peugeot. Then I came across this.

    Anyone have any experience with these type of BBs? I assume it would work, but there might be something i'm missing.
    The problem with those is you need to find someone with a chamfering tool to chamfer the BB shell. I can tell you from first hand experience if you skip this step, the outer flange will likely fail. Other than that, they seem to be of ok quality.
    Gearhubs demystified and other cool stuff.


    Rule #12: The correct number of bikes to own is n+1

  5. #5
    Senior Member Grand Bois's Avatar
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    You'd be better off with one of these than a piece of junk like that YST:

    http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=019

  6. #6
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    I'm not 100% sure it's french thread yet, I'll have it apart next week. I've dated it roughly to the mid 70s by the decals. However it is an Australian built model, i can't find any info about whether or not they used british thread on the BB.

    Just looking at my options, i may not have to replace the bottom cups if i can find a cotter-less axle to fit in the existing bb.

  7. #7
    cab horn
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    Quote Originally Posted by pat_00 View Post
    http://www.sjscycles.co.uk/product-S...reads-4521.htm

    Having some trouble finding a french threaded BB for my peugeot. Then I came across this.

    Anyone have any experience with these type of BBs? I assume it would work, but there might be something i'm missing.
    This is the standard YST brakcet. Low quality, low everything. It basically is a last ditch effort to revive a bike with F'ed up BB threads.

    I remember Sheldon Brown remarking that they stopped selling them cause they blew. Most shops should have this special "frame mod" tool. Once you do it, you can't go back.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  8. #8
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    okay i'm convinced not to go with this option

    thanks for your advice everyone.

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