Over-oiling seems to have been a common safeguard from the earliest days. Attached is a copy of a photograph from The Motor Cycle in 1912. It shows R A (Angus) MacMillan riding the Scott with which he won the Scottish Six Days Reliability Trial. I guess he can be excused for the smoke as he was photographed climbing an observed hill – I am not sure which, but Wednesday’s route ran from Aberdeen to Dingwall via Elgin and Inverness. I often think of this when I am accused of emitting too much smoke !