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Old 10-02-19, 08:13 AM
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Hermes
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Some road races are very hilly with steep sections such that lower gearing may be an advantage but probably not.

With a 48t large ring, you give up some top end flexibility. Each tooth is equal to about 2 rpm in leg speed. So if your competitors are spinning 90 rpm at 25 mph using a 53t ring, you will be spinning approximately 100 rpm.
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