Cooper Mark IV

The Cooper Mark IV was a Formula Three and Formula Two racing car designed and built by the Cooper Car Company at Surbiton, Surrey, England, in 1950. Following the adoption of the 500cc formula for F3 in 1949, Cooper evolved the Mark III to use a 500 cc (31 cu in) JAP single. The ladder frame was retained, with the aluminum body supported by hoops. Lockheed twin-shoe disc brakes became standard, coupled to two master cylinders. The suspension was Fiat 500 transverse leaf spring independent suspension, used at front and rear.

Cooper Mark IV

The Cooper Mark IV was a Formula Three and Formula Two racing car designed and built by the Cooper Car Company at Surbiton, Surrey, England, in 1950. Following the adoption of the 500cc formula for F3 in 1949, Cooper evolved the Mark III to use a 500 cc (31 cu in) JAP single. The ladder frame was retained, with the aluminum body supported by hoops. Lockheed twin-shoe disc brakes became standard, coupled to two master cylinders. The suspension was Fiat 500 transverse leaf spring independent suspension, used at front and rear.