On Aug 1, 2005, at 5:54 PM, Brent Regan wrote:

If you calculate the horsepower derating based on the density delta from 0 to 9,000' MSL you will have 76 horsepower where you once had 100 so you now have 8 gallons per hour per 76 horsepower or (given 8 lbs per gallon for Jet-A) 64 lbs per hour per 76 horsepower or  0.84 pounds per horsepower hour.  My Lycoming running at 75% power and 150 deg F rich of peak burns 0.47 pounds per horsepower hour. To be fair, there are 15% more pounds in a gallon of Jet-A than a gallon of 100LL and Jet-A is ~10% cheaper so the fuel consumption of the Innodyne only 116% of the Lycoming comparing dollars per...

Brent! Stop! I have a headache already! ;)-

So, for us non-engineer types your telling us that the fuel specifics v. power trade off for this engine are just not there????

Thanks!

Barry "layman" Hancock
122LL