Originally Posted by
bikemig
Yeah, I'll likely take a shot at it as I might like to run campy derailleurs on this. Talk about non-standard parts, this bike has a british threaded bottom bracket and a raleigh 26 tpi steer column but with a 26.4 crown race. As far as I know Raleigh headsets only came in 27.0 crown race . . . .
I had a local bike shop re thread the bottom bracket to 24 tpi on my 1971 Raleigh Grand prix. Was not too happy with the results, the bb cup is a bit loose until it is almost threaded as far as it needs to go. Saw that it could be done on Sheldon Browns site.