Originally Posted by
invisiblehand
That is a big jump in the front! ... most compact cranks are 16 teeth. Although I think Sheldon Brown did something similar with an TA-like crank.
Yup, 60/39 = big jump.. wanted to see if it would work.. I installed Shimano bar end shifters and an Ultegra road front derailleur... it actually worked sweet..
Originally Posted by
invisiblehand
Off topic question: Why not go with Capreo (or the Moulton equivalent ... at least I think Moulton has an alternative with a 9 or 10-tooth cog) and a smaller tooth jump in the front? You'd probably get a gear-inch-equivalent double to work that way.
On this particular bike, I didn't need anything over 100 g/i .. the 11/28 9spd gave me appealing steps.. the Capreo 9/26 has some gaps that I wanted to avoid.. the 10t Moulton cassette costs more than I make in a month, so there were some considerations to be made.. the result though gave me a bike with essentially two ranges 40 to 100 g/i on the 60t and 26 to 65g/i on the 39 with pretty even steps ..