X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta02.emeryville.ca.mail.comcast.net ([76.96.30.24] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5593852 for flyrotary@lancaironline.net; Mon, 11 Jun 2012 19:39:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.24; envelope-from=hoursaway1@comcast.net Received: from omta12.emeryville.ca.mail.comcast.net ([76.96.30.44]) by qmta02.emeryville.ca.mail.comcast.net with comcast id MBZj1j0040x6nqcA2BeYfm; Mon, 11 Jun 2012 23:38:32 +0000 Received: from sz0081.ev.mail.comcast.net ([76.96.26.137]) by omta12.emeryville.ca.mail.comcast.net with comcast id MBeX1j0032xV6SL8YBeXt7; Mon, 11 Jun 2012 23:38:32 +0000 Date: Mon, 11 Jun 2012 23:38:31 +0000 (UTC) From: hoursaway1@comcast.net To: Rotary motors in aircraft Message-ID: <1402867460.1428953.1339457911003.JavaMail.root@sz0081a.emeryville.ca.mail.comcast.net> In-Reply-To: Subject: Re: [FlyRotary] Re: EGT MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1428952_1989128387.1339457911003" X-Originating-IP: [71.206.108.115] X-Mailer: Zimbra 6.0.13_GA_2944 (ZimbraWebClient - IE8 (Win)/6.0.13_GA_2944) ------=_Part_1428952_1989128387.1339457911003 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Will add some shielding were we can, is there an ohm reading I could watch = with Fluke meter in place of EM2 on lead to sensor so I can look for interm= ittant open?=C2=A0 David=20 ----- Original Message ----- From: "Tracy" =20 To: "Rotary motors in aircraft" =20 Sent: Thursday, June 7, 2012 11:46:49 AM=20 Subject: [FlyRotary] Re: EGT=20 Possible it may be going open (thermocouple sensors are normally a shorted = junction) but also possible you are picking up noise on the leads from some= source.=C2=A0 These are millivolt level signals so it doesn't take much no= ise to make a wild reading.=C2=A0 Keep leads away from high tension wires (= spark plug leads)=C2=A0 and lines with a lot of switching current (injector= , ignition coil power, etc).=20 Tracy=20 On Wed, Jun 6, 2012 at 11:01 PM, < hoursaway1@comcast.net > wrote:=20 Info needed about EGT sensors, on my RWS EM2 #2 EGT about every 10 seconds = will come up as 4000 deg. F. or so.=C2=A0 Is the sensor going open or short= ed intermittently.=C2=A0 Have not checked it yet, just removed break-in oil= after 24 hrs. run time & went with 20w50w full synthetic, getting ready fo= r first flight ( got delayed last year by coolant & oil temp readings in-op= ., solved=C2=A0& my youngest daughter grad. EMU,=C2=A0Meagan &=C2=A0Cody mo= ved to Bloomington Illinois for Cody's new job, with dad as one of the move= rs ).=C2=A0=C2=A0=C2=A0 David R. Cook=C2=A0 RV6A Rotary=C2=A0 Lansing MI.= =C2=A0=20 ------=_Part_1428952_1989128387.1339457911003 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit

Will add some shielding were we can, is there an ohm reading I could watch with Fluke meter in place of EM2 on lead to sensor so I can look for intermittant open? David

From: "Tracy" <rwstracy@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, June 7, 2012 11:46:49 AM
Subject: [FlyRotary] Re: EGT

Possible it may be going open (thermocouple sensors are normally a shorted junction) but also possible you are picking up noise on the leads from some source. These are millivolt level signals so it doesn't take much noise to make a wild reading. Keep leads away from high tension wires (spark plug leads) and lines with a lot of switching current (injector, ignition coil power, etc).

Tracy

On Wed, Jun 6, 2012 at 11:01 PM, <hoursaway1@comcast.net> wrote:

Info needed about EGT sensors, on my RWS EM2 #2 EGT about every 10 seconds will come up as 4000 deg. F. or so. Is the sensor going open or shorted intermittently. Have not checked it yet, just removed break-in oil after 24 hrs. run time & went with 20w50w full synthetic, getting ready for first flight ( got delayed last year by coolant & oil temp readings in-op., solved & my youngest daughter grad. EMU, Meagan & Cody moved to Bloomington Illinois for Cody's new job, with dad as one of the movers ). David R. Cook RV6A Rotary Lansing MI.

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