Return-Path: Received: from fed1rmmtao09.cox.net ([68.230.241.30] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3163492 for flyrotary@lancaironline.net; Mon, 12 Apr 2004 21:07:00 -0400 Received: from BigAl ([68.107.116.221]) by fed1rmmtao09.cox.net (InterMail vM.6.01.03.02 201-2131-111-104-20040324) with ESMTP id <20040413010659.CBXM14862.fed1rmmtao09.cox.net@BigAl> for ; Mon, 12 Apr 2004 21:06:59 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: EGTs Date: Mon, 12 Apr 2004 18:07:27 -0700 Message-ID: <000001c420f3$b05838d0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C420B9.03F960D0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C420B9.03F960D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 Subject: [FlyRotary] Re: EGTs =20 One question is at what percent power are these temps. Clearly they are = on the high side. =20 =20 It was full throttle, about 6000 rpm. =20 I'd say WOT and 6000 is not a good time to start leaning - unless you're over 8,000 ft. At those conditions I had peak close to 1750, so with a = bit higher compression, 1800 is maybe not so far out-of-line. Try cruising = at about 5000 - 5200 RPM and a few thousand ft; then lean out to about 100 = lean of peak, and see what your temps and fuel flow are.=20 =20 I did just briefly, but not understanding the 1800+ readings, I didn't = want to mess with the mixture much until I knew more about what I was looking = at. =20 Good thinking. 1800+ for very long is very unhealthy for SS exhaust. =20 Al ------=_NextPart_000_0001_01C420B9.03F960D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

 

Subject: [FlyRotary] Re: EGTs

 

One question is at what percent power are these temps.  Clearly they = are on the high side.   

 

It was full throttle, about 6000 rpm.

 

I’d say = WOT and 6000 is not a good time to start leaning - unless you’re over = 8,000 ft.  At those conditions I had peak close to 1750, so with a bit higher = compression, 1800 is maybe not so far out-of-line.  Try cruising at about 5000 = – 5200 RPM and a few thousand ft; then lean out to about 100 lean of peak, = and see what your temps and fuel flow are.

 

I did just = briefly, but not understanding the 1800+ readings, I didn't want to mess = with the mixture much until I knew more about what I was looking at.  =  

 

Good = thinking.  1800+ for very long is very unhealthy for SS exhaust.

 

Al

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