
09-08-2010
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*SuPeRsTaR mEmBeR*
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Join Date: Sep 2006
Location: chesterfield - no-mans land!
Posts: 3,175
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You mean 28t 'pinion' gear?
I'm running a 7.5 on a 23 and its plenty fast enough, so I'd say somewhere around 25 would be a good starting point. 28 might be a bit high.
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