Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 368842 for flyrotary@lancaironline.net; Tue, 17 Aug 2004 18:32:12 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.202.64; envelope-from=kenpowell@comcast.net Received: from 204.127.205.147 ([204.127.205.147]) by comcast.net (sccrmhc13) with SMTP id <2004081722314201600dea00e>; Tue, 17 Aug 2004 22:31:42 +0000 Received: from [68.51.44.162] by 204.127.205.147; Tue, 17 Aug 2004 22:31:40 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Re: P-P Surprise / idle Date: Tue, 17 Aug 2004 22:31:40 +0000 Message-Id: <081720042231.27079.4122874C000BBE42000069C7220076219404040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Jul 16 2004) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_27079_1092781900_0" --NextPart_Webmail_9m3u9jl4l_27079_1092781900_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit I think that what we are seeing here is that the intake charge is being diluted by the exhaust due to the huge hole in the rotor housing for the PPort. As the rotor passes over this opening the exhaust gasses (which are still under some pressure)escape into the intake charge. This is one of tests that I plan when I finally get around to putting an engine together. Ken Powell > > Charlie > > > I have observed in earlier tests an influence of mixture on P-P running at > low RPM and transition throttle opening. I hope I have more definite results > at S-B in October. The only thing I dare to speculate on at this time is the > posibility of 2-Stroke like behavior at idle and low RPM as far as mixture > is concerned. > > Richard Sohn > N-2071U > unicorn@gdsys.net > > > > > > > > > > > >> Homepage: http://www.flyrotary.com/ > > >> Archive: http://lancaironline.net/lists/flyrotary/List.html > > > > > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html --NextPart_Webmail_9m3u9jl4l_27079_1092781900_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

I think that what we are seeing here is that the intake charge is being diluted by the exhaust due to the huge hole in the rotor housing for the PPort. As the rotor passes over this opening the exhaust gasses (which are still under some pressure)escape into the intake charge. This is one of tests that I plan when I finally get around to putting an engine together.

Ken Powell

> > Charlie
> >
> I have observed in earlier tests an influence of mixture on P-P running at
> low RPM and transition throttle opening. I hope I have more definite results
> at S-B in October. The only thing I dare to speculate on at this time is the
> posibility of 2-Stroke like behavior at idle and low RPM as far as mixture
> is concerned.
>
> Richard Sohn
> N-2071U
> unicorn@gdsys.net
>
> >
> >
> >
> >
> > >> Homepage: http://www.flyrotary.com/
> > >> Archive: http://lancaironline.net/lists/flyrotary/List.html
> >
>
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html

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