Originally Posted by
CrankyFranky
Huh. I've had two bike shops that declined my asking them to spread my 531 from 120 to 130. Guess I have to talk to a frame builder to get a straight answer.
You took the wrong approach. You could have gone to shop 1), asked for and got a spread 120 to 126. Then go to shop 2) and ask for and get a spread from 126 to 130. Does your town have two more shops?
My Mooney came (at my request) 120. Had it spread to 126 20 years ago. I have been debating going to 130 but have held off. Glad I did. Last year I set it up fix gear with a Miche Pista fix-fix flip-flop hub dished 4mm so I can run 3 cogs (with a "dingle") on three separate chainlines. Having the space from 126 made it easy. I probably could have managed 130 but I really didn't need another hoop to jump through! (Custom "dingle", custom chainring bolts, a Phil Wood BB that made dialing in the exact chainlines a piece of cake and lots of computer/CAD time to find an approach that would work.)
Ben