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Old 05-27-08, 07:19 PM   #1
KLW2
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Inner chain ring

I have a Biopace triple that is 50 - 44 - 28 and I would like to go to a 22 inner ring for touring. Should I go to a smaller middle as well to ease shifting? what are the considerations?
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Old 05-27-08, 07:26 PM   #2
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If your cranks have 110/74mm BCD (bolt circle diameter) like I suspect, the smallest chainring that will work will be a 24 tooth.
You'll also need a front derailleur that can handle that wide a difference in chainring sizes.
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Old 05-27-08, 07:53 PM   #3
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ditch the Biopace. Go to round rings. your knees will thanks you
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