I have a 1978 Raleigh Rampar R-1 and took on the challenge of converting it into a fixed gear. This is my first build and everything has been easy so far, until now....bottom brackets and crankset/cog alignment. I have to replace my bottom bracket to fit my new Eighthinch Crankset because the spindle was "cottered."
I have tried everything, including ordering another cotterless axle from Europe but nothing seems to work...the new spindle is too long for smooth chain alignment. So I figured the best bet is to replace the old bottom bracket with a completely new one...I'm pretty sure the BB is 68mm but I have no clue how wide the new BB needs to be...in order to save room for the lockring to screw on. If anyone can help, I would be VERY HAPPY!! Thanks!
This is my bike model: