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Old 05-14-2011, 01:54 AM   #15
Bill Harris
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Joined: Sep 2008
Location: backwoods Alabama
Oddometer: 6,290
Classic photos of a worn crank sprocket.

One theing that has puzzled me is why the double-row crank sprocket wears more quickly than the single-row. "In theory", the double-row sprocket ought to have half the load on each tooth that a single row sprocket does, so it should wear less. Metallurgy problem?
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