Well I think that this may have outfoxed us all!

The lockstops are cast forward of centre, so it can't be Mc18 - "Mc 18 stem is a tidy bit longer the 21,28 and the stops are right at the back of the yoke where the 21, 28 are midship"
It can't be MC21 because otherwise they would work (unless the frame is wrong, but it's not)

So by process of elimination it should be MC28, except I don't think it is, can anyone confirm if 21 & 28 use the same lock stop casting position? Frame/vs/Yoke


...MC16 anybody?


Last edited by Max on Mon May 04, 2020 12:06 pm; edited 1 time in total