Sometimes we do give away our age with posts like this … I started out with 125s … my fave was what I thought now was the BSA shaft drive … though I may be mistaken, it may have been chain … S7, S8 had shaft (?) … but the first I legally rode was the Triumph 350, with eyes on the Bonny 650. Thought 350 when Kawasaki arrived but then decided CB500 was my thang as an all rounder bike … city, some touring.
“S7, S8 had shaft”
The S7 & S8 were Sunbeams. I’m not aware that BSA ever made a shaft drive bike (unless anyone knows otherwise?).