mixing chain rings
02-13-12 | 12:02 PM
#1
Thread Starter
Senior Member
Joined: Apr 2010
Posts: 817
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From: New York City
mixing chain rings
I want to put a 39t round inner ring on my oval biopace crank set.The bcd is identical.Is that acceptable?Can I expect any problems?The original ring is 42t and I could use the help on the hills.
02-13-12 | 01:36 PM
#2
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Joined: Apr 2006
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In the days when oval/biopace rings were common it wasn't unusual to find them that way from the factory. I still have a Sun Tour labled crank that ismoval, oval, round on the big ring and have put together sets will mixed rings without problems. Roger
02-13-12 | 02:40 PM
#5
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Joined: Aug 2011
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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)
40T 130BCD Biopace rings are rare, but sometimes come up for sale. A cassette swap could help, too.
