29-12-2023, 04:22 PM
(29-12-2023, 04:06 PM)Ruairidh Dunford Wrote: There are two types of crankcase hole, for the rubber mounted ones.
Only the larger sized rubber is made, these days, so you can either open the hole up to suit or leave it out.
(29-12-2023, 04:17 PM)Reckless Rat Wrote: Some of the earlier rubber mounted crankcases have a smaller diameter for the mounting bolt/rubber to pass through - you'll have to improvise. The new rubbers you show in the photo are for the later crankcase. I don't know when the size changed, but mine at #M238100 has the larger holes. (1935 I think). I have a 1933 crankcase with the same size holes as yours...
Thank you both... I'll have a look and see what I can find.