I don't recall any mention of bikes being included at that point. I'd have to look at the book which is the history of the Motor Racing Club to see when they first ran at Wigram. Unless someone on here has a copy.
And yes, of course he was a bike guy Spyda. A Grade at Monica Park speedway prewar. Scrute for first season of Aranui and chief lapscorer at Cust up to '61.
I understand that a large part of the "old pals act" being used on the senior police to get the circuit approved came from the old man having taught a lot of them to ride a motorcycle pre-war.