Return-Path: Received: from sccrmhc12.comcast.net ([204.127.202.56] verified) by logan.com (CommuniGate Pro SMTP 4.2.2) with ESMTP id 421219 for flyrotary@lancaironline.net; Sun, 19 Sep 2004 09:37:06 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.202.56; envelope-from=kenpowell@comcast.net Received: from 204.127.205.148 ([204.127.205.148]) by comcast.net (sccrmhc12) with SMTP id <200409191336340120079mt8e>; Sun, 19 Sep 2004 13:36:34 +0000 Received: from [68.51.44.162] by 204.127.205.148; Sun, 19 Sep 2004 13:36:34 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Re: Engine start Date: Sun, 19 Sep 2004 13:36:34 +0000 Message-Id: <091920041336.10717.414D8B620006A85B000029DD220073544604040A99019F020A05@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_10717_1095600994_0" --NextPart_Webmail_9m3u9jl4l_10717_1095600994_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit John, It's easy to check for a non-running rotor/cylindar. Crand it up, then spray water (spit works too but I dont think I want to be that close to a spinning prop (I've used up my 9 lives due to prop injuries-ask me at Tracy's if you're curious!!!)) on the header pipes - the pipe that doesn't instantly boil the water off isn't running. Ken Powell -------------- Original message -------------- > Quoting John Slade : > > > It IS running rich, so I tried changing the overall range with mode 3. As I > > lowered the mixture with 7 or 8 pushes the rpm came up a bit, then started > > to slow down again. At the best rpm the EC2 is showing slightly higher than > > center on the mixture. I tried switching off either set of coils and felt a > > degradation with either off. Disabling secondary injectors killed the > > engine. Primaries didn't make much difference. I checked compression. 105# > > on each rotor. > > > > My next thought is to check that cold start is operating properly, but I'm > > pretty sure it is because the engine slowed down when I tried switching it > > on. > > > > I spoke with Tracy and he suspects fuel, possibly a bad connection in the > > injector wiring, so tomorrow I'll rewire the entire injector circuit if > > necessary. > > > > Thoughts anyone??? > > > > Frustrated in West Palm > > > > John, > Have you verified that your injectors are operating properly. After sitting for > a long time they sometimes freeze up. You can put some fuel pressure to them > and activate the solenoids with 12V and observe the spray pattern. Be careful > with sparks. Suggest you perform this test outside. > > Mark S. > > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html --NextPart_Webmail_9m3u9jl4l_10717_1095600994_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

John,

It's easy to check for a non-running rotor/cylindar. Crand it up, then spray water (spit works too but I dont think I want to be that close to a spinning prop (I've used up my 9 lives due to prop injuries-ask me at Tracy's if you're curious!!!)) on the header pipes - the pipe that doesn't instantly boil the water off isn't running.
Ken Powell

-------------- Original message --------------

> Quoting John Slade :
>
> > It IS running rich, so I tried changing the overall range with mode 3. As I
> > lowered the mixture with 7 or 8 pushes the rpm came up a bit, then started
> > to slow down again. At the best rpm the EC2 is showing slightly higher than
> > center on the mixture. I tried switching off either set of coils and felt a
> > degradation with either off. Disabling secondary injectors killed the
> > engine. Primaries didn't make much difference. I checked compression. 105#
> > on each rotor.
> >
> > My next thought is to check that cold start is operating properly, but I'm
> > pretty sure it is because the engine slowed down when I tried switching it
> > on.
> >
> > I spoke with Tracy and he suspects fuel, possibly a bad connection in the
> > injector wiring, so tomorrow I'll rewire the entire injector circuit if
> > necessary.
> >
> > Thoughts anyone???
> >
> > Frustrated in West Palm
> >
>
> John,
> Have you verified that your injectors are operating properly. After sitting for
> a long time they sometimes freeze up. You can put some fuel pressure to them
> and activate the solenoids with 12V and observe the spray pattern. Be careful
> with sparks. Suggest you perform this test outside.
>
> Mark S.
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html

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