I realised this weekend that my Williams cranks take different sized cotter pins on each size. I never noticed before as I used to have a loose bucket of them and would just fit one side and then the other.
At first I was sure that they weren't a matching pair but the serial numbers match. The drive side is english (9.5) and the other side is continental (9).
Has anyone come across this before?
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Julius Naim
London UK