Thread: Spit IIa is now so much more inferior to the 109
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Old 05-15-2012, 02:46 PM
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Crumpp Crumpp is offline
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The following publications give 2850 RPM for Merlin II and 3000 RPM for Merlin III:
Notes for Pilot's on Merlin II, III and IV - 1940
Merlin II and III & V Aero Engine, 2nd Edition A.L. 4 - 1940
Spitfire Pilot's Notes - 1940
Well there you go...

In 1940 the Merlin III was given an rpm increase to 3000 rpm.