Singlespeed & Fixed Gear - Going from 120mm bb to 113mm or 110mm bb: Help
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05-19-11, 04:19 PM
my bike had an older cup and cone bb; 68 x120 dimensions.
should i be okay going to a cartridge bb with either 68 x 113 or 110?
05-19-11, 04:22 PM
First determine what crank you are going to use, before trying to choose at BB spindle type and length.
05-19-11, 04:28 PM
already have the crankset, square spindle sugino m type off an old road bike. i had used it before, but i needed a larger chainring and the bb was getting rough. the bb will be the shimano bb-un54
05-19-11, 04:44 PM
What was the chainline like with the 120mm BB? Losing 7mm may be a bit of an issue if it was straight with a 120.
05-19-11, 04:49 PM
i cant remember. meh, ill see how it goes
05-19-11, 06:19 PM
There's no reason to waste money, do some research and find out what length spindle the cranks call for.
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