I think some similar restriction was placed on him after he flew the Richard Noble inspired ARV Super 2 two seat aircraft built on the IOW.

[Linked Image]

Probably just as well as the Hewland three cylinder two stroke engine had a propensity for oiling plugs leading to a swift return to the airfield.


Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone