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Old October 27th 06, 07:31 PM posted to rec.aviation.ifr
Doug[_1_]
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Posts: 248
Default 12 horsepower per hour per gallon, equates to percent power

Rule of thumb. So if you are burning 10 gallons an hour in a 180 hp
engine, you are developing (10x12) = 120 hp. 120/180 = .67, so that is
67% power. It's not exact but gets you close.