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Good job on the acquisition, Kirk. That will look great on your plane. I'm hoping you'll have some performance increases, too.

Pretty...

Thanks - I'm hoping to feel a difference in performance, too. Sensenich studied the airflow around the cowling of a Cessna 150 and came up with a more efficient pitch design. Technically it's still a 50" pitch, but the prop is stamped "50L", the "L" denoting the new design.

According to Sensenich:
Test data shows that, with a "50" pitch (52 pitch is standard on CESSNA 150 airplanes) and the revised blade-angle distribution, time to lift-off may be reduced by about 15%; rate-of-climb may be increased by a factor of about 9%; and the airplane upon which the prototype propeller was tested showed an 85 knot cruise at 10 rpm less than was required with the standard propeller.

I wish I had done more tests with my old McCauley prop. I suspect any benefits may be as much wishful thinking as real. I'll report back what I find.


-Kirk Wennerstrom
President, Cessna 150-152 Fly-In Foundation
1976 Cessna Cardinal RG N7556V
Hangar D1, Bridgeport, CT KBDR