OK, so, I'm building this Cannondale. I've written elsewhere about how this frame is like hooking up with a highschool crush twenty years on, so I'll post this in-process photo:
I'm really how pleased with how hot she is, and I'm proud of the bike, too.
Anyway, the chainline is farkakte. The high gear is right up against the chainstay and the chain is least noisy in sixth gear.
Since 8th or 9th is most likely to be cruising gear, I'd like that one to be smoothest, as I've got a single ring on the front.
So, it looks like I can move a spacer over to the right and redish. But that'll only get me as far as seventh. This looks to me like the BB should be wider, but how do I figure out how long it should be? Should I have had a way to figure this out using the power of numbers, instead of the power of trial and error? Cuz finding bottom brackets by trial and error seems expensive.