What torque pulses? Today was the first run with the complete engine in
flight configuration,
meaning engine - psru - prop. No vibration out of the ordinary. It, off
curse, is shaking
at 1300 RPM idle, just as my Soob does. Once it goes over 1700 running
like an electric
motor, almost. Didn't go over 5k yet, have to make sure everything stays
together.
I am using the testing now for power optimizing and just running it until
something
wears out or brakes. In the meantime the flyable components still missing
will be
designed and built for the final configuration.

Richard Sohn
N2071U

This is a p-port engine folks.

Paul Lamar ...No rotor no motor.

Congratulations!

A p-port no less. Carb or FI?

Doc Custer
Retired Software Engineer and sometime Audiologist

Its a carb.

-- 
Paul Lamar ...No rotor no motor.

The intake system  is not final. I am presently running a 36mm Mikuni,
flowing 5gph gas at 5000rpm.

Richard


What Richard is saying here is 5 gph is 30 pounds per hour at a BSFC
of .5 that is about 60 HP. 36 mm is of course about 1.4 inches in diameter
so this will give you a good idea how much HP a 2 rotor p-port engine with that size
runner will generate at 5000 RPM. Probably a bit more with a longer runner
around 30 inches. So for a two rotor you are looking at 120 HP at 5000 RPM.
Assuming for the moment the HP curve is still a straight line at 5000 to 6500 RPM
you will get 156 HP at 6500 RPM. If the straight line function still holds 168 HP at
7000 RPM.

1.400 inches inside diameter has an area of 1.54 square inches.
1.875 inches inside diameter has an area of 2.76. Pushing the linear extrapolation
envelope here..... the HP for the larger dia. runner P-port is then estimated
at 300 HP. We are NOT getting that. We are getting 240 HP on the dyno so obviously
power is not directly proportional to intake port area. We are now obviously
in the convex portion of the p-port HP curve.

Paul Lamar ...No rotor no motor.

The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.