Engines

The Stirling had 4 Bristol Hercules VI or XVI air cooled radial engines, each 1635 hp, they used a fully-feathering constant-speed propeller. The engines were started electrically but provision was made for hand turning. A seperate oil system was provided for each engine. Power supply for electrical system was provided by two 24 volt, 1000 or 1500 Watt generators, driven by the inner engines. These charged four 12 Volt, 40 Amp accumulators connected in series-parallel to give 24 Volts, 80 Amp to feed the electrical systems.

  1. Hydromatic Propeller Press. Switch
  2. Cowl Gill Transmitter
  3. Cowl Gill Motor
  4. Fuel Pressure Switch
  5. Generator
  6. Fire Extinguisher Flame Switch
  7. Booster Coil
  8. Starter Motor
  9. Flame Switch Junction Box
  10. Fire Extinguisher Flame Switch
  11. Generator Suppessor
  12. Engine Speed Generator
  13. Oil Dilution Valve
  14. Isolation Spark Gap

The type of propellers used on the Stirling were De Havilland, type 55/10, 3 bladed, metal, 13ft 6in diameter, variable pitch with constant-speed control

RAF Engineers receive training on the Hercules Engine

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For Questions or Suggestions E-mail me at Stirling@box.nl