Donald Campbell guise of Dunlop, BP, Smiths Industries and Lucas Automotive,Rubery Owen as well as many others, became heavily involved in the project to build the most advanced car the world had yet seen. CN7 was powered by a specially modified Bristol-Siddeley Proteus free-turbine engine of driving all four wheels. Bluebird CN7 was designed to achieve 475–500 mph and was completed by the spring of 1960. Following low-speed tests conducted at the Goodwood motor racing circuit in Sussex, in July, the "CN7" was taken to the Bonneville Salt Flats in Utah, USA, scene of his father's last LSR triumph, some 25 years
Triumph Speed Twin as the model developed before disappearing altogether for the last year of production in 1966. The unit 500 engine continued development in the parallel Tiger 100 range ending with the Tiger Daytona models which ceased production in 1973. Triumph Speed Twin The Speed Twin 5T is a motorcycle that was made by Triumph at their Coventry, and later Meriden factories. Edward Turner, Triumph’s Chief Designer and Managing Director, launched the Triumph Speed Twin at the 1937 National Motorcycle Show. It was a 500 cc OHV vertical twin in a lightweight frame and the first truly successful British parallel twin, setting