I have a build concept for a SimpleBeam kind of thing. The steep hill I live on completely rules out a singlespeed for the uphill part, and rules out riding fixed for the downhill part. Still, I notice that for my commute I use a particular small handful of gears. It makes me think that it is plausible for me to build a 2-speed, using a White 16/19 on the back and two chainrings on the front with 3-teeth of difference, so I could have one rear wheel position.
Right now my concept is a 35/38 in front with the 16/19 in back. My two gears: 35x19 and 38x16 would be 50" and 64" with 27" diameter wheels (700x32). On a 110mm BCD, I could alternatively easily run a 36/39, a 39/42, a 40/43 or a 42/45 in front without having to chase down any weird chainrings. On a 94mm BCD, I could run a 29/32 for offroady stuff. As a shifting maneuver, I'd loosen the right side bolt. Stick-shift the chain from big-to-small and then from small-to-big. Then tighten the right side bolt again and ride away. Anyway, by my numbers, spinning at 110RPM with a 27" diameter wheel is 21mph, which is plenty fast for road cruising for me, especially when I can coast downhills. I think I can handle the 50" gear up my hill as well. I wonder what others feel they need. I know Patrick Moore zens out with a slow metronome cadence climbing with 70-something gear inches. Who else thinks my two speeds are a bad idea? Bill Lindsay -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
