> prop manufacturer here in Oz. said that that engine and there prop > would give me an estimated cruise about 150-160 kt cruise WOW!! if > it works. Another engine option I am considering is the new D-MOTOR > LF26 specs look really good to suit a KR2, direct drive, 92 Hp @ > 3000 RPM, water cooled, EFI, 88 Hp @ 2800 RPM for cruise,8 > liter/hour 2.1 gal/hour for the yanks,
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ I'm thinking your prop manufacturer has suffered a prop strike to get those numbers. If my math is correct, and prop 100% efficient, you would need to have a 90 inch pitch prop to achieve those numbers at that rpm. And on the D-Motor, rule of thumb is 1/2 pound of fuel per horsepower per hour. 2.5 gallon X 6 ppg=15X2 =30hp. A claim of 88 hp at that fuel burn is a 300 percent improvement in efficiently over my 0-200. What's their secret. Let the buyer beware. A local flyer has a Sonex Y-X or whatever that model is called with the V tail. He is running a Jabaru 120 hp, 6 cylinder, don't know what prop he has, but my KR with 0-200 turning a Sterba 60X64 will out run him with not much effort. Larry Flesner
