Originally Posted by pissypaw

I started out on a 46/16 (77"), and that was way too low for a steep downhill. I find that I'd rather do it tough up a hill than spin out down a hill. I've just gotten a 46/13 (95") and it's heaven! It's like riding a V8. It's a bit too heavy on some of the really long uphills or the really steep uphills, but the fun it grants me on the flat and downhill makes it all worth it. Changing the sprocket is cheap and easy, so if you don't know what to go for, just start out at 80" and see if you need a smaller or bigger one.