Originally Posted by CrossChain
Berts, heroism aside, maybe a 13% grade you could go for a 12x25 or, we promise to look the other way

, a 12x27........at least until you install that compact. A little "chutzpah" on the ascent ?
CC: so what difference would a compact make for this? I'm assuming that the compact double would probably be a 50/34 or thereabouts?
Or perhaps I should ask this question on the 'Dumb Questions' thread?
Or try to understand all that protoengineering discussion from another recent thread?
or if I think through my own question, then evidently the 34 combined with berts' rear cassette would have geared him down sufficiently to attempt the 13% grade?
centexwoody