>> 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.
Paul,
It really is looking somewhat better than that, my present one rotor is
based on 12A rotor and housing. If compared to a 13B you have to multiply
the hp by 1.14, which would be 68hp.
Sorry for not pointing that out earlier.
Richard
Thanks for doing this Richard. All the one rotor guys ought
to snap this engine up.
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.