1. Early Prototype model photographed in December 1968, Cycle World, revealing a Japanese test rider at the Honda factory riding a "mysterious" four cylinder bike with electrical monitoring devices mounted on the gas tank and the sides of the bike with wires from these devices dangling everywhere. Had drum front brake & chrome side panels on gas tank. There are apparently more & different pictures of this bike in the Italian magazine periodical �Motociclisimo,� published sometime in 1969. ANYBODY KNOW MORE? Please send information to be posted. DOES ANYONE KNOW WHO THE MAN RIDING THE MACHINE IS ?
28.Dec.04 - per Norman Gaines; "I recall that the rider of the early CB750 with the drum brake in the black and white picture was Morio Sumiya, Honda's #1 test rider and a semi-factory racer. He was the one who ran with (and finished ahead of) Steve McLaughlin at Daytona in Honda's second CB750 foray. He was killed not much after that in a national race in Japan. The answer to the question of the strange small "alternator" cover is that the prototypes had magnetos, not alternators. Take a look at the CR750 mag cover for confirmation. In the pre-production pictures, you didn't mention that the cylinders and upper crankcase were one piece! That was advanced technology for 1968 - I don't think Honda actually produced an engine like that until the Interceptor models." Thanks, Norman !
29.Dec.04 - just in from Hirokazu Sugiyama, employee with HONDA motorcycles of Japan since 1972; "The photograph of CB750 may have measured an exhaust-related temperature. The rider in the photograph appears not to be Mr SUMIYA. Mr SUMIYA was a man with a very sufficient physique. The rider in the photograph is thinner than Mr SUMIYA." Thanks, Hiro ! (Ed.note - Let's keep this healthy debate alive!)