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Old 04-01-2013, 04:08 PM   #2
Strokizator
Gnarly Adventurer
 
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Joined: Oct 2006
Location: Cincinnapolis, Pennsyltucky
Oddometer: 242
Dropping one tooth from from 42 to 41 is only a 2.3% change, so you'll need to rev it up to over 8500 rpm to see a 200 rpm drop.

17/42 is about all you need for the highway and then only if you like to hypermile at high speeds. I've run a 16/42 and now a 17/45 and much prefer it even though most of my miles are on pavement.
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