I have a Motobecane Messenger FG/SS that I spread the rear triangle to wedge a SRAM S-7 internal gear hub into. Since this hub is wider than the stock flip-flopper my chainline isn't straight anymore leading to a lot of chain-dropping. I'm cool with buying a new BB but I'm not sure what spindle length I need. I believe the stocker is a 110mm so I'm guessing I need a 113 or 115mm but I'm not sure? Anyone know how I should approach this?
Thanks in advance.
and an art shot: