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Uploaded on Jul 28, 2008
Mel Larsen has claimed that his Larsen RADAX engine has set the word record in thermal efficiency for an engine. The Larsen RADAX is an 8-cylinder, 2-stroke, 300 horsepower Internal Combustion Engine that has an efficiency range of 45 - 54 percent, which far exceeds the 20 - 30 percent efficiency of a standard gasoline engine.