Rolls-Royce aircraft piston engines test stand. The Buzzard was an enlargement of the Kestrel of Condor size, developed in its most extreme form into the Rolls-Royce R racing engine used for the Schneider Trophy competition. The Vulture of 1939 was essentially two Peregrines on a common crankshaft in an X-24 configuration, both of these types being deemed unsuccessful. The Rolls-Royce Merlin, and later the development of the Buzzard, the Rolls-Royce Griffon were the two most successful designs for Rolls-Royce to serve in the Second World War, the Merlin powering RAF fighters the Hawker Hurricane, Supermarine Spitfire, fighter/bomber de Havilland Mosquito, Lancaster and Halifax heavy
Rolls-Royce Twenty Rolls-Royce Twenty The Rolls-Royce Twenty built between 1922 and 1929 was Rolls-Royce's "small car" for the 1920s and was produced alongside the 40/50 Silver Ghost and the successor to the 40/50, the Phantom. It was intended to appeal to owner drivers but many were sold to customers with chauffeurs. A new inline-6 cylinder overhead valve engine was designed for the car of 3127 cc with a bore of 76 mm and stroke of 114 mm. Unlike the Silver Ghost engine, the cylinders were cast in one block and the cylinder head was detachable. Both coil and magneto ignition were fitted.