THANK YOU FOR YOUR BRAIN
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fred zeppelin II: Electric Boogaloo, Sat 27 Jun 2015, 1:01,
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Rereading it this morning
I realise that, apart from it being a not entirely coherent explanation in desperate need of editing, I also cocked up the calculation:
The distance travelled by the piston during one cycle is double the stroke length. i.e. up and down the cylinder. That still doesn't get you anywhere near sonic velocities though, so doesn't change the conclusion.
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wheresthefish Partly filled with wrong, Sat 27 Jun 2015, 9:16,
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