Bill, for years I have wondered about that TTP Spidercycle. My younger brother had one.
If I recall correctly, the back wheel was `energised` via an air pump blowing against fan blades on the back wheel?
Many an evening was spent in the living room with our dad (i'm sure mum probably hated it) with a huge ramp made from a 4ft long piece of fibreboard curved skywards.
That bike FLEW the length of the room and outshone Evel Kneivel everytime.
Fond memories. Thanks for sharing.
"I should say I`m very much cleverer than any of the people who put me here. As a matter of fact, I could leave any time I wanted. It`s only a doll`s house after all. Anyway, I don`t mind. I like dolls" - The Mad Hatter, Arkham Asylum.