Singlespeed & Fixed Gear - Chainline Help

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HookAsnooK
05-10-10, 07:27 PM
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.

cnnrmccloskey
05-10-10, 07:38 PM
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.
HookAsnooK
05-10-10, 07:46 PM
Thanks I've been looking into that.

HookAsnooK
05-10-10, 08:04 PM
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?
cnnrmccloskey
05-10-10, 08:10 PM
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)
Scrodzilla
05-10-10, 08:48 PM
Pick up a 107mm Shimano UN-54. You'll be all set.