X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] (67%) URL: contains host with port number (33%) HEADERS: mail has MS Outlook properties but missing "Outlook" in "X-Mailer" Headers Return-Path: Received: from bay0-omc3-s26.bay0.hotmail.com ([65.54.246.226] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2039238 for flyrotary@lancaironline.net; Sat, 12 May 2007 02:28:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.246.226; envelope-from=lors01@msn.com Received: from hotmail.com ([65.54.250.80]) by bay0-omc3-s26.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.2668); Fri, 11 May 2007 23:27:32 -0700 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 11 May 2007 23:27:13 -0700 Message-ID: Received: from 4.171.150.206 by BAY115-DAV8.phx.gbl with DAV; Sat, 12 May 2007 03:59:03 +0000 X-Originating-IP: [4.171.150.206] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EC2 question Date: Fri, 11 May 2007 23:58:59 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_013F_01C79428.57EAD940" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.50.0034.2000 Seal-Send-Time: Fri, 11 May 2007 23:58:59 -0400 X-OriginalArrivalTime: 12 May 2007 06:27:13.0093 (UTC) FILETIME=[93CDE750:01C7945E] Return-Path: lors01@msn.com This is a multi-part message in MIME format. ------=_NextPart_000_013F_01C79428.57EAD940 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable You can cut it off without grounding anything but of course the auto = tune function of the EM2 will not work without the O2 sensor input. = The mixture indicator on EM2 will drift around unless you ground it. = This is one example of where you can usually parallel two instruments = from one sensor and it will work. Mixture monitors just look at = voltage from the sensor and are usually very high input impedance so = they should not load down the sensor. BTW Buly, when I looked at your EC2 map table prior to the snubber = update it was VERY erratic. I was surprised the engine ran well enough = to fly. Take a look at it with your EM2 and make sure it looks = reasonable after you do some tuning.=20 For instance, if two adjacent MAP addresses are at opposite ends of = the scale, it is not reasonable and you should investigate. It is very = instructive to fly with the MAP table screen up on the EM2 in track mode = and watch the table pointer (blinking bargraph bar) and the mixture = monitor. Move the throttle around so that the pointer moves through the = suspected problem areas and insure that the mixture monitor stays in the = middle. If it doesn't, adjust the MAP address that causes mixture to go = out of proper range. =20 Tracy ----- Original Message -----=20 From: atlasyts@bellsouth.net=20 To: Rotary motors in aircraft=20 Sent: Thursday, May 10, 2007 9:58 PM Subject: [FlyRotary] Re: EC2 question I'm not using the O2 sensor lead for the EM2. I wander if I can just = cut it off at the plug, or have to ground it? I have installed a wide = band O2 sensor with it's own processor and display. Buly=20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_013F_01C79428.57EAD940 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

You can cut it off without grounding anything but of course the = auto tune=20 function of the EM2 will not work without the O2 sensor = input. The=20 mixture indicator on EM2 will drift around unless you ground = it. This=20 is one example of where you can usually parallel two instruments from = one sensor=20 and it will work. Mixture monitors just look at voltage from = the=20 sensor and are usually very high input impedance so they should not load = down=20 the sensor.

BTW Buly, when I looked at your EC2 map table prior to the = snubber=20 update it was VERY erratic. I was surprised the engine ran = well=20 enough to fly. Take a look at it with your EM2 and make sure it = looks=20 reasonable after you do some tuning.

For instance, if two adjacent MAP addresses are at opposite = ends of=20 the scale, it is not reasonable and you should investigate. = It is=20 very instructive to fly with the MAP table screen up on the EM2 in track = mode=20 and watch the table pointer (blinking bargraph bar) and the mixture=20 monitor. Move the throttle around so that the pointer moves = through the=20 suspected problem areas and insure that the mixture monitor stays in the = middle. If it doesn't, adjust the MAP address that causes mixture = to go out=20 of proper range.

Tracy

----- Original Message -----

From: atlasyts@bellsouth.net =

To: Rotary motors in = aircraft

Sent: Thursday, May 10, 2007 = 9:58=20 PM

Subject: [FlyRotary] Re: EC2=20 question

I'm not using the O2 sensor lead for the EM2. I = wander if I=20 can just cut it off at the plug, or have to ground it? I have = installed a wide=20 band O2 sensor with it's own processor and display.
Buly=20

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Homepage: http://www.flyrotary.com/
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