Paul,

  Thought you would enjoy viewing a video of my P-Port 20B taken last
  weekend
  (11/28/10).  I was preparing for takeoff.  The video of my departure
  didn't
  turn out too well.

  http://www.youtube.com/watch?v=1Zsy-cgWvj4

  Mark S.

  What idle speed was that Mark?

  Paul Lamar

 What a very happy looking airplane  :)
 I gave it a thumb up.

 John

 Paul,

Idle was up and down between 1600 & 2100 rpm.  It will idle slower, but
there is no reason for it.  It needs a bit more tuning, but it is running
much better than before the recent EC-2 upgrade.  I'm curious if it would
idle smoother if the primary injector was downstream of the slide throttle.
 What do you think?

By the way, I recently removed the tangential muffler and replaced it with
my original 3-into-1 exhaust with DNA muffler and picked up gobs of hidden
power.  This one is louder, but the power gain was unbelievable!  Now I have
to really have to press hard on the right rudder to keep it on the
centerline during the takeoff roll.  Ya gotta love it!!!

Mark S.

I don't think the idle will improve by moving the injector
but I could be wrong. Getting a P-port to idle at 1600 engine RPM is a
major improvement in P-ports. Prop RPM is 560 which is far lower than my
C182 will idle. That is due to the slide throttle
being close to the rotor housing. A P-port side exhaust RX8
engine idles even better. NSU and the old Power Sport guys
put the butterfly near or in the rotor housing. The NSU RO80 idle
was great. The Spider had 2 p-ports. One small one for idle and
a larger one for full power. I drove an RO80 in Germany back about 2000.

It is hard to judge the sound on the video. I have a standard
position and that is 30 feet off the wing tip. Noise should
be in the range of 100 db to 106 DB. 100 being relatively quiet
and 106 rather loud. The SCCA have a 103 DB limit. Noise
pressure double every 3 DB. 60 DB is near silence.

Here is a video of Al Gietzen's side port 3 rotor with probably
100 HP less than yours. No db reading
http://www.rotaryeng.net/Velocity_Vignette.wmv

This one is of Ian's RX8 side port engine of unknown HP in WA.
It is very quiet indeed. Again no db reading
as I forgot to pack the Radio Shack sound level
meter. http://www.youtube.com/watch?v=XgLw3a8DZgM

Sometimes you get more wind noise in the mike.

It is also hard to separate prop noise from engine
noise.

Here is Dave Leonard's turbo 13B. No db reading on that
either.
http://www.youtube.com/watch?v=o6iz7mgO4UQ
http://www.youtube.com/watch?v=kjXEM2D_4-Q

Paul Lamar