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Old March 6th 07, 09:49 PM posted to rec.bicycles.tech
Dan Connelly
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Posts: 451
Default Chain Ring Diameters

James Fitch wrote:
Does anyone know, offhand, what the outside diameters are of 53, 52, 51, 50
tooth chain rings? I'm fine tuning a derailleur fit. I'd like to get the
tail of the derailleur dropped a couple of mm to keep the chain from
dragging one rear cog smaller than it does now (currently 53 on the front).

-Jim


Each tooth is a half-inch. Diameter = circumference / pi.

Dan
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