Inspired by a veteran plane the other day and Neko's thread, I've been looking at some engine porn lately. Am I the only one who loves the noise, sound and vibration in the air of a proper engine? Here's the Rolls-Royce Merlin, one of my favourites. I'll never forget the first time I heard it, at an air show in the mid eighties.
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Here it is in its natural environment, the Spitfire, one of several planes equipped with this beauty:
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Gentlemen, start your engines!