Hi Paul
I have built an Australian designed stol a/c called a hornet that
normally uses engines 100 to 120hp  I am looking for an engine of about
120/150 hp what rotary would you recommend and what would its weight and
fuel burn be, I would only need about 80hp for cruise, the extra hp for
t/o and climb.

Paul MacRae

You could do that with a p-port one rotor. Power would be around
120 to 140 HP. Fuel burn would be .47 pounds per HP per hour.
Richard Sohn has the closest to production light weight
Mazda based one rotor.

Richard Sohn <res12@fairpoint.net>

RES12
Power 110hp/7500RPM
Weight (w/o cooling rads) dry 170lb
Incl. Alternator, Redrive, Starter
Rotax type prop flansh
Redrive Hirth G 40
Ratios 2.03, 2.25, 2.64, 2.96, 3.33

RES13
Power 140hp/7500RPM
Weight (w/o cooling rads) dry 195lb
Incl. Alternator, Redrive, Starter
Redrives Hirth G 40
Ratios 2.03, 2.25, 2.64, 2.96, 3.33
RWS RD-1B (1:2.176)
RWS RD-1C (1:2.85)


Paul Lamar