I am looking to change bottom brakets on my Raleigh supercourse. From the what I have been reading the later modles had Raleigh threading. I dated the bike a 1973-1974. UNLESS I am measuring wrong I have a 68mm shell, But I have a cottered crank. One thing I read from sheldon browns site is that If it is a cottered crank then it is 26tpi, but the othere says 68mm shells are english. I am pretty confused and have been reading on this for the past 2 days. I am going to evetualy tear the bike down and build it up as a fixed gear I just want to figure out the bottom bracket first. Oh and if anyone has a sugguestion on the length of a spindle I would greatly appreciate it.
I have been reading to much and it is to late.