Thread: Bottom Bracket Question
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Old 09-08-13 | 07:06 PM
  #8  
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ThermionicScott
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From: CID

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)

BB lengths are specified for the crankset so that it can achieve the right chainline. The BB length for the prior crankset is more or less irrelevant if you're not going to use it anymore.
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