G'day Paul
I flew my RV7 Rensis for the first time today. All went well, except for
the heat radiating from the Tangential Muffler, more shielding coming up.
A question for the Propeller people.
Static full power run gives 5900 rpm with no cowls on and the 68"X86"
Prince P tip prop. However the max I can on take off is 5200 rpm.
Does this mean the prop. is stalled when static? Does a stalled prop.
spin faster than an unstalled one?
 The other possibility is that the [carb] air intake  under the cowl  is
drawing in very hot air.

Ian Beadle Western Australia.

Great news Ian. Congratulations. You built that thing in
record time. My guess is.. it being your second rotary powered
RV really helped. I'll see if Robin and I can get over there
in the next year or two and go for another ride. Are you still
at the same airport and hangar?

Don ought to hire you to help finish his Mustang II.
You now qualify as an expert rotary engine installer.


Well it depends on your definition of stalled.
I have heard of that condition before. Typically people refer
to that condition as the prop starting to "bite" when the airplane
starts moving. Do you have the 2.85:1 or the 2.17:1 gear ratio?

Please send me some more pictures of your cowl opening and rad
configuration and I will try to figure out what is going one.

In the mean time here are some old pictures of Ian's first airplane
and hanger for the realatively new guys.

The last picture is Ian's new TB and intake air filter.
My guess is the intake runners are too short for 5900 RPM.
They need to be 22 to 24 inches long or there abouts for a
2.17 gear box. Shorter for a 2.85:1 gear box. 18 inches or so.

A 180 degree cold air  ram air scoop coming up and out
of the top of the cowling will help. See the 3D. The last
thing you should change is the prop pitch.

Paul Lamar ...No rotor no motor.

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