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Thread: Chainline Help

  1. #1
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    Chainline Help

    I am currently failing in my endeavor to go fixed.

    I have a Schwinn World Sport from about 86ish. Currently I am trying to put an 1/8 crank on the old square taper bottom bracket. The rear hub is a flip flop hub. Currently the chainline does not line up at all.

    Do I need a certain bottom bracket? Thanks for the help.

  2. #2
    Senior Member cnnrmccloskey's Avatar
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    Quote Originally Posted by HookAsnooK View Post
    I am currently failing in my endeavor to go fixed.

    I have a Schwinn World Sport from about 86ish. Currently I am trying to put an 1/8 crank on the old square taper bottom bracket. The rear hub is a flip flop hub. Currently the chainline does not line up at all.

    Do I need a certain bottom bracket? Thanks for the help.
    Yes you need the correct spindle length which will depend on your crankset, the information shouldn't be hard to find.
    Quote Originally Posted by Braden1550 View Post
    Monocoque unicycles with internal gear hubs, ridden by extortionists with an excellent sense of balance.

    You'll see. Unless you drilled out your eyes because they were too heavy.

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    Thanks I've been looking into that.

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    I've come to the conclusion that I need a 68 mm x 107(-110) mm bottom bracket. How do I know what the TPI is?

  5. #5
    Senior Member cnnrmccloskey's Avatar
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    Quote Originally Posted by HookAsnooK View Post
    I've come to the conclusion that I need a 68 mm x 107(-110) mm bottom bracket. How do I know what the TPI is?
    What kind of frame do you have, its most likely english thread.

    edit: dur its a world sport,than I am almost positive it is english threaded 1.370" X 24 tpi (I don't know why its underlining, but it wont stop)
    Last edited by cnnrmccloskey; 05-10-10 at 08:13 PM.
    Quote Originally Posted by Braden1550 View Post
    Monocoque unicycles with internal gear hubs, ridden by extortionists with an excellent sense of balance.

    You'll see. Unless you drilled out your eyes because they were too heavy.

  6. #6
    Veteran Bastard Scrodzilla's Avatar
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    Pick up a 107mm Shimano UN-54. You'll be all set.

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