The SC1 was Yamaha's entry into the scooter segment. At that time the most succesful brands were Mitsubishi with their "Silver Pigeon" scooter and Fuji heavy Industries with the "Rabbit". The SC1 had a 175 cc engine (10,3 hp) which drove the rear wheel through a torque converter and shaft drive, too complicated as it turned out to be. The body was full monocoque construction as well. Today, with the oils we have now, most probably the machine would have been a very good one. But the SC1 was ahead of its time, as so many other motorcycles were.......!

Yamaha SC1, Mar. '60

The small picture 2# shows a scaled-down clay model with a saddle type seat. Today you see this on modern 50 cc scooters! Picture 3# is a full-size clay model and the other pictures show further development to the final model. The last sketch show the monocoque body panels.