Westerly Owners Association

Does anyone know when they changed from 1" to 25mm. Ours is believed 1974, no CR1222
Many thanks
Jonathan

Not I, but I do have the old shaft somewhere (1975, hull/sail no 1361) removed when the engine and all the stern gear was changed. I coud measure it if you want but I think it's at home (in Liverpool - and I'm in the boat in Falmouth!).