Originally Posted by
AlmostTrick
That's an interesting and unusual set up you're running there, SHBR. Do you have a rear derailer to maintain chain tension?
I've spun my 42-12 over 35 mph many times. 37 at least once. The only way I could justify any taller gears is if I had some long descents, which I don't. Maybe the OP does.
I understand that not all riders care to, or even can, spin these higher RPM's.
I'm using an old 8 speed Shimano 600 tri-color short cage RD as a tensioner.
My rear wheel is 32 spoke, dishless with 72mm flange spacing. In theory, it should be slightly stronger and stiffer than my front wheel.