I've recently bought an old racing bike (probably mid 80s)
Im doing it up and have have removed to original bottom bracket, which wasn't a sealed unit.
Im buying a new bottom bracket but i'm not sure what axel width to get. The axel on the original bike was 150mm long. Would a new Shimano UN26 or UN54 with a 113mm axel be ok? Or would i need one as long as the original?