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![]() "Charles Vincent" wrote in message news ![]() Torn Lawence wrote: The British made some WWII engines with rotating cylinder sleeves that had in and out ports cut into them - rotary valves! No poppets. Good performance, but burned oil and left conspicuous smoke trails, not a good thing for a warbird to do. That's what I remember from an engine class, unless I'm hallucinating again. That was a sleeve valve engine, Harry Ricardo's magnum opus. The Bristol Hercules and Centaurus. Wear was an issue they never did tackle. Charles They still live today, but in a different form? http://www.rcvengines.com/corporate/rcv_technology.htm |
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