Thread: Vintage Crank converted to compact?
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Old 03-10-15 | 02:54 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 SimplySycles1
In process of a commuter build and while it is nowhere near original a modern compact crank would just look wrong. I want to take a double Shimano 600, DA 7400, or similar and put 48 / 32 or something around that. I want to stay with 80/90s cranks as 130 spaced chain rings in any number of teeth are reasonably priced.

Any advise?
The smallest 130 BCD ring possible is a 38T. I've had good results with 48/39, 48/38, and 50/38 combos on those. Vintage 110 BCD Sugino double cranks like the GT will take a 33T small ring (though 34T is much more likely to be found):

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