Originally Posted by
79pmooney
Shimano BBs are usually symmetric. Poor tolerances on the crank might make for a couple of mms difference in fit on the spindle. Maybe the right is a touch big and the left a touch small? (I replaced a Phil Wood that was a touch too close with a Phil spindle 3mm longer and gained 5mm. That's with very high quality stuff.
Symmetry makes very little difference to our perception of fit. My knees need the lowest Q-factor I can get but care zero which side that comes from.
Edit: While I am on Phil Wood, know that they will make any length and asymmetry you want. Shimano makes very high quality BBs so you can decide how much you want to alter each side, adjust the 110 symmetrical Shimano accordingly and order that from Phil Wood. Phil's BBs are adjustable so you can play with the symmetry to dial in the chainline. Expensive and not overnight, but fun. Good company and their stuff is beautiful!
Ben
I did have a Phil Wood BB a long time ago. I got it because it was the only thing I could find with Raleigh threaded cups for an old Raleigh frame. It was a very nice BB, but probably the cost of 6-7 UN55's. I still have my Phil Wood BB tools as well, but I haven't used them since. Maybe one day once again
Originally Posted by
nomadmax
I said "Ride THAT bike" meaning the one with a 4mm difference, not a made up one with a foot difference.
4mm doesn't matter if the chainline is correct. Your time would be better spent riding and enjoying the bike.
Will do. Gonna take it out tomorrow, I think.