What an interesting thread and what a knowledgeable lot you are, however, slightly off thread topic tilt and at the risk of being shot by you piston heads, I present the following quick vid.
Sat atop a hill one day in sunny Jersey, one of these came up from behind and flew over my head not very many metres up, I literally shook from my head through every internal organ to my feet, never have I heard noise like it, I nearly weed with excitement.
Crank up the volume guys, it's like god's come to town and he's fuggin well angry.
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