Thread: biopace rings
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Old 01-16-07, 12:13 AM
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shogun17
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I used a 42t biopace on my ultra-crap conversion. It was 42-17 gearing (lazy, I know. Its 52-18 now) with very long chainstays. I think a bigger rear cog & longer chainstays make the sag less important. It worked fine. Acceptable tensions all the way through a rotation. Makes bugger all difference though, run a normal ring.
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