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