I'm building an early 90's cannondale road frame to single speed and I'm ordering the parts online. How long do I need for my square taper spindle for proper chain alignment? Ordering online I would prefer to get it right the first time so I can avoid returns. I'll be using a flip-flop ss wheel set w/120 spacing. The bb is 68mm, if that maters. The options on the bb's I'm looking at are 107, 110 or 115mm.
The frame is bare so I can't do any meassuring of current chain line or spacing from a current crank.