How do I figure out what size Bottom Bracket I need?
Hi, I am building up a road frame, and I need to know what size Bottom Bracket I need to order. Im building a 2003 Orbea Mitis road frame. The cups are 68mm and the threads are english. I have no idea what length spindle I need. Ill be building with a double ring Ultegra crank. I tried emailing Orbea, but had no luck there. Roadbikereview was useless so far. Can anybody help me here? Hopefully somebody knows what size I need. If now, how do i measure it. Thanks