I know the helmet, but canāt think who 
George Fogarty?
Nope. Not a Fogarty.
Giacomo Agostini?
It is not the goat.
supermac
Wasnāt he a footballer?
Raymond āSupermacā McCullough
Edit - FOOTBALL!!! Ffsā¦ 
Indeed it is he.
The eyes made me think of Guy, then my head was bolloxed!!!
At least this one was a bit of a challenge. Usually somone pops up with the answer almost immediately.
Iāll post a picture of why I knew the helmet specifically (if I can find it)
One of the images that really captured road racingā¦ I think it might have been the Temple 100ā¦ awesome!
Which made me look into it a bit moreā¦
So I spent an evening or 2 going on media sites to watch clips of it
Like thisā¦
And they did all that on basic suspension and treaded tyres. Mad.
Thatās why I went for his Dad!
I think youāre right @Dawsy, good callā¦ I was thinking Guy, but his concentration has a softer lookā¦ Ray And Carl have an aggression
Guy
Carl
Ray
A very young Rossi?