That sounds like Ron Burch you are referring to. I met him when I was racing at Scarborough a few years back. He was around all the GP's in the 70's wearing those clothes he wears.
He was in the Cat With No Tail pub one time too (just up the road from me) with John "Spud" Kneale, former Sector Marshal in the Windy Corner area for many years, and a bit of a "Superfan" himself!!!