Hello Paul
              We are working on a new conceptual helicopter project, and have come to the conclusion that the only engine type suitable for this is the Wankel Rotary.
Turbines would of course be nice but the cost is not. Aircraft engines are also heavy as well as costly.

Power needed is at least 300HP, but 400 better.  What would your recommendation be ?
-  a standard 3-rotor Renesis with light boost, perhaps perhaps 3-6 Lb.
-  a 4-rotor (26B) naturally-aspirated
-  a turboed 13B
-  something else

Thanks, and with best regards

Paul Randall
Bumblebee Project Leader
Lithz & Co.

I recommend a turbo P-port 2 rotor running on auto fuel. 400 HP for take off and about 300 HP
continuous. Half the fuel burn of a turbine with about the same weight.

Here is a 650 HP AC time to climb version running on alcohol with water injection. Weight is 220 pounds
with a Bell 47 gear box and Racing Beat end and centre housings.


Paul Lamar

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