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@GreatSince78
Hi all, I'm restoring an old steel road bike, British hand made in 531c tubing etc, nice Campag Nuevo record parts throughout, a real gem, but I'm having problems replacing the bottom bracket.
Basically while the threads are English the bottom bracket shell width seems unconventional at 64mm from edge to edge of the shell. I tried fitting a standard 68mm BB and unsurprisingly it's too wide, i.e. the cups won't screw into the shell fully.
So any ideas, I've looked online but can't find any useful references to 64mm BB's... Thanks in advance!