The single rotor engine is finally running again. Dynamically balanced and a new ignition system helped a lot. The prop is set to give around 6000RPM at WOT. The repeated result are: RPM 6000/min Fuel flow 6.8 gph MAP 27" Mixture 14.6 EGT 1700 F Oil and water temperatures were stable at 160/140 respectivly. The fuel flow would indicate 80hp at a BFSC of .5 . If this is anywhere close to what the engine produces, the predicted 110hp at 7500RPM are feasible. Keep in mind that this is a 12A based engine. For a 13B based version it will be close to 150hp. I now will have to put all my efforts into putting the flyable engine together. Richard Sohn N2071U

Richard, How fast will the single rotor drive the pick up backwards?
Bill Jepson