I don't know how to change gears (well at least I don't do it enough). I ride pretty much my whole ride in my second highest gear (46X15 or 16) and only ever use maybe 4 gears total.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"