Spitfire P7539 Engine
John Romney Mather
66 Squadron, Gravesend
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Rolls-Royce Merlin III
This is the Rolls Royce Merlin engine from Spitfire P7539, which crashed at the Half Moon Public House, Hildenborough, Kent on Sunday 27th October, 1940. The engine although buried more than 12 feet down, is in remarkably good condition. You can read the story of how I recovered P7539 in our Tribute to the Few section.
The Rolls-Royce Merlin III
Variant of Merlin II with universal propeller shaft, able to be fitted with de Havilland or Rotol propellers. From late 1939, using 100 octane fuel and + 12 psi (83 kPa) boost, the Merlin III developed 1,310 hp (977 kW) at 3,000 rpm at 9,000 ft (2,700 m). Later developing 1,440 hp (1,074 kW) at 3,000 rpm, +16 psi (110 kPa) boost at 5,500 ft (1,676 m) for the Sea Hurricane.