Originally Posted by
rruff
Frame respacing pushes the crank Q factor out also... assuming you want to keep the chainrings and cassette centered. I doubt most people would notice 5mm (2.5mm on each side) though.
IMO 135mm is long overdue. 11 speed on 130 (or 131mm) really compromises wheel strength. And I really don't see the point of 11 gears either. I ride S9 (with C11 shifters) and though I live in a mountainous area, I don't feel that I suffer from a lack of gears.
Assuming gear width and spacing stayed the same, how many cogs could be on a cassette before a standard double wouldn't be able to hit n-1 of the cogs without rubbing? I'd assume there's a limit to how wide the rear could get to accommodate more gears before you'd start losing them as well.