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 20/25 Best timed speed: 76.27 mph Maximum Speeds in gears: Petrol Consumption: Driven Hard – 14 mpg The 20/25 engine and chassis were designed for the owner driver market – ideally fitted with a smaller sedan or coupe body as the one used in the 1935 Autocar Test. Unfortunately many 20/25’s were fitted with larger and heavier limousine bodies which hurt their performance. Only the chassis and mechanical parts were made by Rolls-Royce. The body was made and fitted by a coachbuilder selected by the owner. Amongst the most respected coachbuilders who produced bodies for Rolls Royce cars are Park Ward,