flyrotary@lancaironline.net Mailing List Archive

Richard,

Love to hear that info on th single - good work mate, as usual.

80hp at 6,000 rpm is very respectable for a 12A. The 150hp sounds good but will it get there, who knows!

I've roughed out my single crank and it wasn't all that difficult, now I'm setting up for centres both ends and a drive dog for final cut.

I'm slow but rough!

George ( down under)

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

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