Thanks andmalc. I decided to sell the ultegra crankset and bottom bracket. Now I am deciding between a square taper bottom bracket or a hollowtech II or giga x pipe crankset due to the flexibility in bottom bracket lenghts. My other question is, are the hollowtech II and giga x pipe bottom bracket chainline adjustable by installing and removing washers/spacers from the bottom bracket? Thanks in advance.
Originally Posted by
andmalc
It looks like you'd need a much wider bottom bracket if you went with the 135mm Surly. If you have a wide pelvis that might be worth it, but with the 109mm BB-550 I'd say go shorter hub and washers.
You could also ask this question over in the Fixed Gear/SS forum