Mailing List flyrotary@lancaironline.net Message #24646
From: Bob White <bob@bob-white.com>
Subject: Re: [FlyRotary] Re: P Ports working on dyno
Date: Wed, 29 Jun 2005 07:40:29 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi Rusty,

He's using Tracy's controller.  I got the impression that it was idling
at 1000, but maybe not smoothly till around 1500.
Quote:
"Will idle below 1000 RPM.  Starts easily. Idles smoothly more or less
under 1500 RPM."

I don't remember the details on the muffler, but they are going to try
Jerry's muffler before getting off the dyno.  I'm really interested in
seeing the results from that as  I have one hanging on my engine.

Let's hope it sounds good Jerry :)

Bob W.

On Wed, 29 Jun 2005 08:04:35 -0500
"Russell Duffy" <13brv3@bellsouth.net> wrote:

 From Paul Lamar's list it has just been posted that the p port engine
on the dyno at MazdaTrix with remote fuel injectors is now running very
well, developing 220 hp (this sounds like a 6000 rpm number to me but
the post did not say the rpm) and it is idling smoothly at 1000 rpm.

 
Hi Jerry,
 
220 at 6000 would be impressive, assuming there are no big negatives we
don't know about.  Did they specifically say they checked the throttle
response?  Do you know what ECU they're using?  It could be that they can
tune out some of the the remote injector problems. Any idea what they're
using for a muffler?   For the record, who's actually conducting the dyno runs, and who's reporting
the results?  I would be more skeptical of the reports, if they're only
coming from PL, as he's well known for only telling us what he wants us to
hear.   Don't get me wrong, I AM interested, just skeptical.  I won't do anything
significant with the RV-3 engine for a while, so hopefully, more details
will be available.  Unfortunately, I don't think it's ever been a problem
getting good numbers from a PP engine on a dyno, but the problems occur in
the real world, from fuel mileage, noise, and "drivability" issues (which
could be meaningless to us, or not).   Cheers,
Rusty (250 HP would be nice)








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