Hello Paul,

If you look at fuel consumption charts...  I would really prefere to
cruise about 4500 rpm, and with only a ground adjustable prop for LSA
isn't 9000 rpm climb unattainable?

I will also question TBO after hearing back from Marc J.

Dan

Rotaries are not at all like piston engines.

Why do you want to Cruise at 4500 RPM? Get a flight in a rotary powered
airplane. Contact Tracy Crook in Bell Florida and go up there and get
a ride. I don't know where you live.

They cruise fine at 6500 RPM. The bearing loads are a minimum at 6000
RPM. My monster engine (compared to an Aixro) RX8 cruises great at 6000 RPM
120 MPH for awhile and then I am in the next town :) I run 4000  (80 MPH) all day
long on LA Freeways.

Mazda runs the engines at 7500 to 8000 full power for 24 hours with no
wear. In an airplane if you take off at 9000 RPM full power you will
be way down on power at 6500 RPM. So too will your fuel burn if the engine
is properly leaned. Especially at 7500 feet and above.

Do you have a way to manually lean the mixture?

My guess is the power will be down to around 30 HP at 6500 RPM. If you can lean it
to .5 BSFC that is 15 pounds of fuel per hour or 2.5 gallons an hour.

Send me the fuel consumption charts so I can analyze them.


Paul Lamar ...No rotor no motor.

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