X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost06.isp.att.net ([204.127.217.106] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5544421 for flyrotary@lancaironline.net; Tue, 15 May 2012 23:38:00 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.106; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-74-235-253-90.mco.bellsouth.net[74.235.253.90]) by isp.att.net (frfwmhc06) with SMTP id <20120516033724H06006vjcde>; Wed, 16 May 2012 03:37:24 +0000 X-Originating-IP: [74.235.253.90] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: High EGTs Date: Tue, 15 May 2012 23:37:27 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0019_01CD32F3.B0500B90" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac0zCjjYzEV2bbjhRUeVn9eYbqBZ6gACq46Q X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0019_01CD32F3.B0500B90 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Mark, Now you have gotten me concerned! I changed the muffler and that didn't seem to have any effect on the EGTs, so I don't think that is the cause, but I don't want to damage any orings. What were the temps you were seeing when the orings were damaged? Bill _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle Sent: Tuesday, May 15, 2012 10:18 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: High EGTs Brian, I had high EGT's at one time. Turns out it was due to an overly restrictive muffler. The high EGT's damaged the o-rings resulting in an engine overhaul. Could this possibly be at the root of your high EGT readings? Mark S. On Tue, May 15, 2012 at 8:51 PM, wrote: My engine is now running just the way it should, temps were 180 or lower on a 75 degree day, but my EGTs have always been high, really high- above 1800 almost all the time. I think it may be a calibration issue. My egt sensors are about 3 inches downstream of the exhaust ports, and I am using Tracy's EM2, calibrated at the stock settings. When the engine is stone cold, the egt's read about 230 degrees, which I assume is normal because the sensors are meant to operate at a much higher temperature. Any thoughts? Brian Trubee ------=_NextPart_000_0019_01CD32F3.B0500B90 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Mark,

Now you have gotten me = concerned! I changed the muffler and that didn’t seem to have any effect on the EGTs, = so I don’t think that is the cause, but I don’t want to damage any = orings. What were the temps you were seeing when the orings were = damaged?

Bill

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Tuesday, May 15, = 2012 10:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = High EGTs

Brian,

I had high EGT's at one time. Turns out it was due to an = overly restrictive muffler. The high EGT's damaged the o-rings resulting = in an engine overhaul. Could this possibly be at the root of your high = EGT readings?

Mark = S.

On Tue, May 15, 2012 at 8:51 PM, <bktrub@aol.com> = wrote:

My engine is now running just the = way it should, temps were 180 or lower on a 75 degree day, but my EGTs have = always been high, really high- above 1800 almost all the time. I think it may = be a calibration issue. My egt sensors are about 3 inches downstream of the = exhaust ports, and I am using Tracy's EM2, calibrated at the stock settings. When the engine is stone cold, = the egt's read about 230 degrees, which I assume is normal because the sensors are = meant to operate at a much higher temperature. Any = thoughts?

=

Brian = Trubee

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