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  1. #1
    Senior Member SingeDebile's Avatar
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    bottom bracket for french threaded TA cranks

    I just bought some beautiful 180mm TA cranks (im tall) they will be used with a triple chain-ring with the rear spacing being 126mm. I'm just not exactly sure of the taper since they are French threaded for the pedals I didn't know if that changed anything. I do not want to mess these up by experimenting... I am hoping they will last me a very long time.

    I don't mind weather its sealed cartridge or not..... but what kind of decent bottom bracket should I be looking for? (that is not too expensive) and what width?

    The frame is English threaded..

    ,thanks for the help!
    bike bike
    ,/(looking for high end steel frames in the larger then life sizes of 68-70cm)
    69cm Romic 'Sport Tourer/Porteur'

  2. #2
    Senior Member sykerocker's Avatar
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    If memory serves me correctly, the crank spindle is ISO tapered - at least, it's NOT the taper used by Shimano, Sugino, and all the later mainstream stuff. Best shot is to look for either a TA or Stronglight (the taper is interchangable) spindle.

    Finding said spindles or bottom brackets isn't all that hard, as I've noticed a fair selection on eBay in the last few months. You'll just need a bit of patience.
    Syke

    "No wonder we keep testing positive in their bicycle races. Everyone looks like they're full of testosterone when they're surrounded by Frenchmen." ---Argus Hamilton

  3. #3
    Senior Member
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    There was someone with new TA English triple spindles on ebay recently, I bought one. Or, here's the whole shebang:

    http://cgi.ebay.com/TA-bottom-bracke...QQcmdZViewItem

  4. #4
    Senior Member SingeDebile's Avatar
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    ive found one on ebay thanks... i hope the price doesnt go up too much
    bike bike
    ,/(looking for high end steel frames in the larger then life sizes of 68-70cm)
    69cm Romic 'Sport Tourer/Porteur'

  5. #5
    feros ferio John E's Avatar
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    Quote Originally Posted by sykerocker View Post
    If memory serves me correctly, the crank spindle is ISO tapered - at least, it's NOT the taper used by Shimano, Sugino, and all the later mainstream stuff. Best shot is to look for either a TA or Stronglight (the taper is interchangable) spindle.

    Finding said spindles or bottom brackets isn't all that hard, as I've noticed a fair selection on eBay in the last few months. You'll just need a bit of patience.
    Actually, early 1970s Sugino cranks used a European end width (the taper is always 2 degrees), rather than the wider Shimano size. Campagnolo changed over to the old Shimano size in the early 1990s.
    "Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
    Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
    Peugeot: 1970 UO-8, S/N 0010468
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  6. #6
    bici accumulatori pinerider's Avatar
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    SD, depending on how old the crankset is, you should check the pedal threads in the crankarms. French bikes of the early 70's used smaller pedal threads than everybody else. They're not hard to correct, just use the proper thread size to retap them, but if your pedals don"t fit, that"s why.
    ...!

  7. #7
    Senior Member Grand Bois's Avatar
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    Quote Originally Posted by pinerider View Post
    SD, depending on how old the crankset is, you should check the pedal threads in the crankarms. French bikes of the early 70's used smaller pedal threads than everybody else. They're not hard to correct, just use the proper thread size to retap them, but if your pedals don"t fit, that"s why.
    Did you actually read his post?

  8. #8
    Senior Member SingeDebile's Avatar
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    Quote Originally Posted by Dirtdrop View Post
    Did you actually read his post?
    hahaha thank you
    bike bike
    ,/(looking for high end steel frames in the larger then life sizes of 68-70cm)
    69cm Romic 'Sport Tourer/Porteur'

  9. #9
    Senior Member cyclotoine's Avatar
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    That's a newer TA BB on ebay which could very well use JIS taper, which TA also uses currently. I have no idea what year TA would have changed but I assume all Pro-5-vis crank arms are ISO. Did you score those off ebay? 180mm are hard to come by even 175s... though I have a set of those.
    1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear

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