sizing up bottom bracket
Could somebody give me a quick run through on bb sizes? I'm just trying to get my head round it all.
I just bought cranks and bottom bracket off ebay for my Zaskar frame, I thought I'd got the sizes right but clearly I haven't. The shell measured up to 73mm, the bb said it did 68 and 73 so I didn't worry about that. It's also got the measurement 113mm which I'm assuming is the complete width of the bb, I was buying the cranks and bb as a pair so I didn't worry about that. The problem is that it physically won't fit in the shell, the diameter of the bb is too large, but I can't find any measurements regarding diameter. Theres a label in the bb which talks about the FD type, then lists 'Clamp' and 'E-type' and it says that if yours is E-type and 73mm then this bb won't work. What is this FD type and is that whats causing the problem?
I'm just trying to determine what size to get, I'm building this bike on a budget and don't want to mess up again.
Thanks in advance, Steve