X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from web81209.mail.mud.yahoo.com ([68.142.199.113] verified) by logan.com (CommuniGate Pro SMTP 5.1.4) with SMTP id 1724899 for flyrotary@lancaironline.net; Fri, 29 Dec 2006 19:02:12 -0500 Received-SPF: none receiver=logan.com; client-ip=68.142.199.113; envelope-from=mike.lafleur@sbcglobal.net Received: (qmail 77922 invoked by uid 60001); 30 Dec 2006 00:01:25 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net; h=Message-ID:Received:Date:From:Subject:To:MIME-Version:Content-Type; b=N3vAzy0+BFxs9K8oAf2N+cQWn11Mrv0XG0ylp0D/dJtdirCS9stx31uBn/lP9LrkhQYJ+kgNQWfSBCThwaZu3YuHmGH0sriddNqjyHEuLXEgTm1L3VlqvfMzxV5e035L60MPIKGxTq+hgctRAajf5RDn6Ydd8QltxSXjAHfgVpE= ; Message-ID: <20061230000125.77920.qmail@web81209.mail.mud.yahoo.com> Received: from [69.218.76.192] by web81209.mail.mud.yahoo.com via HTTP; Fri, 29 Dec 2006 16:01:25 PST Date: Fri, 29 Dec 2006 16:01:25 -0800 (PST) From: Michael LaFleur Subject: Re: [FlyRotary] Re: EC2 mixture changes To: Rotary motors in aircraft MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-359921480-1167436885=:77036" --0-359921480-1167436885=:77036 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable You would need to probe with engine running and probably at load to find th= e EMC problem.=0A=0AIt would be best to use a FET probe. Sometimes the capa= citance of a normal scope probe can be enough to eliminate the signal you w= ere looking for.=0A=0AMike LaFleur=0A=0A----- Original Message ----=0AFrom:= Al Gietzen =0ATo: Rotary motors in aircraft =0ASent: Friday, December 29, 2006 6:08:12 PM=0ASubject:= [FlyRotary] Re: EC2 mixture changes=0A=0A=0A=0A=0A=0A =0A=0A=0A =0A=0A=0A<= !--=0A _filtered {font-family:Verdana;=0Apanose-1:2 11 6 4 3 5 4 4 2 4;}=0A= /* Style Definitions */=0A p.MsoNormal, li.MsoNormal, div.MsoNormal=0A=09{m= argin:0in;=0Amargin-bottom:.0001pt;=0Afont-size:12.0pt;=0Afont-family:"Time= s New Roman";}=0Aa:link, span.MsoHyperlink=0A=09{color:blue;=0Atext-decorat= ion:underline;}=0Aa:visited, span.MsoHyperlinkFollowed=0A=09{color:blue;=0A= text-decoration:underline;}=0Aspan.EmailStyle17=0A=09{font-family:Verdana;= =0Acolor:blue;=0Afont-weight:normal;=0Afont-style:normal;=0Atext-decoration= :none none;}=0A _filtered {=0Amargin:1.0in 1.25in 1.0in 1.25in;}=0Adiv.Sect= ion1=0A=09{}=0A-->=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0ASo=0Afar, Al's controlle= r is the only one that I know of that has had this=0Aproblem. Not unit spe= cific because it has happened on 3 different EC2s in=0AAl's plane so I have= concluded that it is something unique to his=0Ainstallation. I'd like to= get to the bottom of it and any other=0Areports would be helpful.=0A=0A=0A= Small point, Tracy, but we=92ve actually=0Aseen the issues on just 2 EC2 un= its; the original and the current. But even then=0Ait would certainly sugge= st it is not specific a given =91box=92. The=0Aone intermediate box in whi= ch you had switched the internal connection on the=0Atemp sensor, to save m= e the trouble, never got past finding the transmit RFI problem,=0Aso never = determined whether there was corruption of settings. The connecting=0APCM = and EM2 are still the same.=0A=0A=0A =0A=0A=0AThe really puzzling (and frus= trating) thing=0Ais that we have had the scope on every pin on the EC2 conn= ector, and, after=0Aeliminating a couple potential noise issues, we saw not= hing that could explain=0Awhy it is happening. So the investigation contin= ues. If someone else sees=0Asimilar behavior, it might provide a clue.=0A= =0A=0A =0A=0A=0AAl (perfect weather conditions today,=0Aand the plane was r= eady to go =96 but at the last moment I decided I wasn=92t. =0AGuess I=92m = fighting some holiday bug. Bummer.)=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A= =0A=0A --0-359921480-1167436885=:77036 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
You would need to probe with engine running and probably at load = to find the EMC problem.

It would be best to use a FET probe. Someti= mes the capacitance of a normal scope probe can be enough to eliminate the = signal you were looking for.

Mike LaFleur

----- Origi= nal Message ----
From: Al Gietzen <ALVentures@cox.net>
To: Rota= ry motors in aircraft <flyrotary@lancaironline.net>
Sent: Friday, = December 29, 2006 6:08:12 PM
Subject: [FlyRotary] Re: EC2 mixture change= s

=0A=0A=0A=0A =0A=0A=0A =0A=0A