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Old 03-25-15 | 09:29 AM
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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 top506
As I get older I build up more bikes with triples. My rule of thumb for a double to triple conversion is to add 5mm to the drive side of the BB spindle. I don't know if this supported by science or engineering, but it works for me.

Top
Hard to go wrong with that rule of thumb.
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