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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 05-19-11, 03:19 PM   #1
abstractform20
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Going from 120mm bb to 113mm or 110mm bb: Help

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?
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Old 05-19-11, 03:22 PM   #2
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First determine what crank you are going to use, before trying to choose at BB spindle type and length.
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Old 05-19-11, 03:28 PM   #3
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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
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Old 05-19-11, 03:44 PM   #4
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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.
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Old 05-19-11, 03:49 PM   #5
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i cant remember. meh, ill see how it goes
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Old 05-19-11, 05:19 PM   #6
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There's no reason to waste money, do some research and find out what length spindle the cranks call for.
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Old 05-19-11, 05:51 PM   #7
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Exactly what Eric said.
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