C15 Crankshaft thread size

[Steve C15]

Hi.

Thanks for letting me join the forum.

Can anyone tell me the thread size/type on the generator end of the 1963 BSA C15 crankshaft please ?

Steve

[Colin SS90]

Hi Steve

The threads on my B40 crankshaft are 5/8"x20 BSC or CEI (cycle thread). Your C15 should be the same.

Cheers, Colin

[Steve C15]

Thankd Colin.