Curious Droid
The Rolls Royce Crecy was a revolutionary piston aero engine that promised to take over from where the Merlin/Griffin engines left off with power level up to a possible 5000 hp from its two-stroke sleeve valve double blower design all from a 26 litre V-12. This is the story of the Rolls Royce Crecy and why you've probably never heard of it.
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Another interesting engine design from England. Would love to hear one of these run. It was said you could hear it on the dyno from 5 miles away!