X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4485879 for flyrotary@lancaironline.net; Wed, 29 Sep 2010 09:51:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=1.1 cv=sPYQOJmam8qjEXwwiPGKZXTVgm+AfnVsk2mdbnz8xrY= c=1 sm=0 a=61ju2Vd_9Q4A:10 a=rPkcCx1H5rrOSfN0dPC7kw==:17 a=arxwEM4EAAAA:8 a=r1ClD_H3AAAA:8 a=C_IRinGWAAAA:8 a=NuXN9cpSiuqP6IcA6oAA:9 a=XhEsTL0kxM80I9blVbwuO4cFjaoA:4 a=wPNLvfGTeEIA:10 a=si9q_4b84H0A:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=DrikpJILUeq_j-RneWcA:9 a=L9Bnah75gV5CMwctdM4A:7 a=g83s3JmEDi8pMLbedf-S0CgVbS8A:4 a=MSl-tDqOz04A:10 a=EzXvWhQp4_cA:10 a=rPkcCx1H5rrOSfN0dPC7kw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.167.5 Received: from [174.110.167.5] ([174.110.167.5:49387] helo=EdPC) by cdptpa-oedge03.mail.rr.com (envelope-from ) (ecelerity 2.2.2.39 r()) with ESMTP id D1/BE-09966-15443AC4; Wed, 29 Sep 2010 13:51:13 +0000 Message-ID: <3311B0E5BA684C31920B3CB0B5110DBF@EdPC> From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Auto tune/oxygen sensor Date: Wed, 29 Sep 2010 09:51:05 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0035_01CB5FBB.D5443050" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_0035_01CB5FBB.D5443050 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Should work OK, Mark. The narrow band O2 sensors are pretty much the = same except some have a heater element and a signal ground and some = don't. The single wire O2 sensor has no heater element just the sensing = element - so makes it pretty tough to miswire it {:>). So yes, just = about any of the "Universal" single wire O2 sensors should work with no = problem. Ed Edward L. Anderson Anderson Electronic Enterprises LLC 305 Reefton Road Weddington, NC 28104 http://www.andersonee.com http://www.eicommander.com From: Mark Steitle=20 Sent: Wednesday, September 29, 2010 9:31 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Auto tune/oxygen sensor Bill,=20 Funny you would post this. Last weekend I was attempting auto-tune = without much success. I noticed that the O2 bar was off the bottom of = the scale. No amount of tweaking of the mixture knob would bring it = back. Attempts to auto-tune would result in overly rich mixtures. I = had decided that the O2 sensor must have failed, but didn't have time to = remove it. =20 I will take my old one down to Auto Zone and try to match it to another. = If it is a narrow-band sensor, it is my understanding that they all = work on the same basic principle. So, if it has the proper threads, and = a single wire, I don't see why it shouldn't work. That's how I = initially picked the one I have been using for the last 200 hours. = Anyone see a flaw in my logic? Mark S. On Wed, Sep 29, 2010 at 8:10 AM, Bill Schertz = wrote: Was going to do some auto tune in the air yesterday, to get to some = regions of the performance map that can't be reached on the ground. Took off and the O2 sensor indication completely disappeared from the = EM-2 display. Did one circuit of the airport and landed. Discovered that the O2 sensor had failed (physically -- the top fell = off and separated from the body). This caused me to raise the following = questions. 1. I believe that the oxygen sensor readout is only that, not used by = the EC-2 for control purposes.=20 2. When in auto tune, is the EM-2 looking at the sensor for = indications of which way to adjust the mixture? If not, what is the = feedback mechanism? I went to the Auto parts store for a replacement, and ran into the = problem that there are 100's of different oxygen sensors, and they need = to know what car it came from. Anyone have the specs on what this sensor = is?=20 Bill Schertz KIS Cruiser #4045 N343BS Phase I testing ------=_NextPart_000_0035_01CB5FBB.D5443050 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Should work OK, Mark.  The narrow band O2 = sensors are=20 pretty much the same except some have a heater element and a signal = ground and=20 some don't.  The single wire O2 sensor has no heater element just = the=20 sensing element - so makes it pretty tough to miswire it {:>).  = So yes,=20 just about any of the "Universal" single wire O2 sensors should work = with no=20 problem.
 
Ed
 
Edward L. Anderson
Anderson Electronic = Enterprises=20 LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com
 
 

Sent: Wednesday, September 29, 2010 9:31 AM
Subject: [FlyRotary] Re: Auto tune/oxygen = sensor

Bill,
 
Funny you would post this.  Last weekend I was attempting = auto-tune=20 without much success.  I noticed that the O2 bar was off the bottom = of the=20 scale.  No amount of tweaking of the mixture knob would bring it=20 back.  Attempts to auto-tune would result in overly rich=20 mixtures.  I had decided that the O2 sensor must have failed, but = didn't=20 have time to remove it. 
 
I will take my old one down to Auto Zone and try to match it to=20 another.  If it is a narrow-band sensor, it is my understanding=20 that they all work on the same basic principle.  So, if it has = the proper threads, and a single wire, I don't see why it = shouldn't work.  That's how I initially picked the one I have been = using=20 for the last 200 hours.  Anyone see a flaw in my logic?
 
Mark S.

On Wed, Sep 29, 2010 at 8:10 AM, Bill Schertz = <wschertz@comcast.net> = wrote:
Was going to do some auto tune in the = air=20 yesterday, to get to some regions of the performance map that can't be = reached=20 on the ground.
 
Took off and the O2 sensor indication = completely=20 disappeared from the EM-2 display. Did one circuit of the airport and=20 landed.
 
Discovered that the O2 sensor had = failed=20 (physically -- the top fell off and separated from the body). This = caused me=20 to raise the following questions.
 
1. I believe that the oxygen sensor = readout is=20 only that, not used by the EC-2 for control purposes.
2. When in auto tune, is the EM-2 = looking at the=20 sensor for indications of which way to adjust the mixture? If not, = what is the=20 feedback mechanism?
 
I went to the Auto parts store for a = replacement,=20 and ran into the problem that there are 100's of different oxygen = sensors, and=20 they need to know what car it came from. Anyone have the specs on what = this=20 sensor is?
 
 
Bill Schertz
KIS Cruiser=20 #4045
N343BS
Phase I=20 testing

------=_NextPart_000_0035_01CB5FBB.D5443050--