Thread: What size bottom bracket?
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Old 01-08-15 | 06:31 PM
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ThermionicScott
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)

Originally Posted by bike-izle
So is it certain that different spindle lengths differ the same amount on each side of the spindle?

If so, either 107 or 110 seem to be OK for a 45 mm chain line:

107 --> 47.5 - 3 (difference from 113 bracket on one side) = 44.5 chain line.
110 --> 47.5 - 1.5 (") = 46 chain line.

107 being "most ideal."
From what I've read on the Sheldon Brown blog, Shimano's 110 is something of an oddball, having extra length on the NDS. I would go for the 107, personally.
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