why? you choose your one gear ratio according to the terrain you are riding over..

say what that is..

Over..


FWIW,
Track racers have a bag of different cogs and chainrings ..
they change according to current situation..

A cheap build , discarded parts .. I had a 22/42, 26" wheel..

freewheel , JRA, on the very limited flats, in no hurry..

now i go with an IGH.. because not much is that flat.




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