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I can remember a new engine, announced about 20 years ago called the 'butterfly engine'??
The principal was similar to the above design, but as a flat twin on a single planitary gear. I believe that the patent was bought by a big manufacturer, never to be seen again.
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Andy
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If I would be a young man again and had to decide how to make my living, I
would not try to become a scientist or scholar or teacher. I would rather
choose to be a plumber or a peddler in the hope to find that modest degree
of independence still available under present circumstances.
-- Albert Einstein, The Reporter, November 18 1954
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