Bluebird-Proteus CN7 taken at Goodwood Following the low-speed tests conducted at Goodwood, the CN7 was taken to the Bonneville Salt Flats in Utah, USA, scene of Campbell's father's last LSR triumph in 1935. In early September, CN7 accelerated from a standing start to just under in 24 seconds covering 1.5 miles, using approximately 80 per cent of the engine's full power. The LSR attempt however, which was heavily sponsored by BP, Dunlop, and other British motor component companies, was unsuccessful and CN7 was severely damaged during a high-speed crash on 16 September. Campbell suffered a fracture to his lower skull, a broken
Triumph Speed Twin Speed Twin. Edward Turner’s Triumph twin was a major turning point for the British motorcycle industry, as although a 500 cc parallel twin of medium capacity was not revolutionary, the 5T Speed Twin model was lighter than many contemporary singles with significantly more power and torque. Early models were only available in 'Amaranth red' with hand painted gold pinstripes to set off the chrome. Initially the one piece iron cylinder was secured with six studs which led to weakness, so these were replaced by eight studs. The two cylinders were fed by a single Amal Type 6 carburettor and many