Sender: <marv@lancaironline.net>
To:  lml@lancaironline.net
Date: Thu, 05 Dec 2013 07:32:36 -0500
Message-ID: <redirect-6626366@logan.com>
Received-SPF: none
 receiver=logan.com; client-ip=98.138.91.147; envelope-from=casey.gary@yahoo.com
DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=yahoo.com;
  h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type;
  b=lP5/ZUY/CnQwRBJY0pOoKgntd/Je4Dqop0563eV4J1MEcCFX25+z+RcOM/sbzWMxsuNMNU4cdaNBPNrF6q70CnvZ9wE4G1vqN+0eyxM7kQC4tQjYTLXQW8NbO6gZCXksXeSZS0phJ1SFXyImBznZXYS90kXt4eGzcnfKoESqTnM=;
From: Gary Casey <casey.gary@yahoo.com>
Reply-To: Gary Casey <casey.gary@yahoo.com>
Subject: Re:  Bendix S4LN-21 Mag shorted?
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="1072509510-1966577073-1386241751=:59618"

--1072509510-1966577073-1386241751=:59618
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

Don't forget that the P-lead is almost shorted to ground all the time. =A0W=
hen the points are closed it is shorted and when the points are open the re=
sistance is something like 0.7 ohms. =A0Easy to misinterpret that as being =
"shorted." =A0That might be your problem. =A0If the mechanic timed the mag =
with a buzzer, it shows the mag was certainly good.=0AGary Casey=0A=0A=0AAs=
 part of bringing my Lycoming O-290-D2 into AD compliance, My A&E had=A0=0A=
the mags rebuilt at a shop in Ohio. When they returned, he reinstalled=A0=
=0Athem on the engine and timed them. Today, after I hooked up the new=A0=
=0ABogert P-leads, I was ohming them out to insure that I had the ignition=
=A0=0Aswitch wired up correctly when I=A0 discovered that the Left mag was=
=A0=0Ashorted to ground where the hex nut P-lead connects to the mag.I=A0=
=0Aeliminated all possibilities other than something internal to the mag.=
=A0=0AWhat could cause that? The A&E mentioned something about a metal fing=
er=A0=0Adown in the bottom of the hole. Anyone know what that does? Could a=
=A0=0Ashorted capacitor- the one that was supposedly just replaced - cause=
=A0=0Athis problem? My logs are at the hangar but I think this is a S4LN-21=
=A0=0Amag. Any advice would be appreciated, 'cause I'm getting real tired o=
f=A0=0Agoing backwards on this project.=0A
--1072509510-1966577073-1386241751=:59618
Content-Type: text/html; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

<html><body><div style=3D"color:#000; background-color:#fff; font-family:He=
lveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;fo=
nt-size:12pt"><div>Don't forget that the P-lead is almost shorted to ground=
 all the time. &nbsp;When the points are closed it is shorted and when the =
points are open the resistance is something like 0.7 ohms. &nbsp;Easy to mi=
sinterpret that as being "shorted." &nbsp;That might be your problem. &nbsp=
;If the mechanic timed the mag with a buzzer, it shows the mag was certainl=
y good.</div><div>Gary Casey</div><div style=3D"color: rgb(0, 0, 0); font-s=
ize: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, =
'Lucida Grande', sans-serif; background-color: transparent; font-style: nor=
mal; "><span class=3D"Apple-style-span" style=3D"font-family: monospace; fo=
nt-size: 13px; border-collapse: separate; "><br><br>As part of bringing my =
Lycoming O-290-D2 into AD compliance, My A&amp;E had&nbsp;<br>the mags
 rebuilt at a shop in Ohio. When they returned, he reinstalled&nbsp;<br>the=
m on the engine and timed them. Today, after I hooked up the new&nbsp;<br>B=
ogert P-leads, I was ohming them out to insure that I had the ignition&nbsp=
;<br>switch wired up correctly when I&nbsp; discovered that the Left mag wa=
s&nbsp;<br>shorted to ground where the hex nut P-lead connects to the mag.I=
&nbsp;<br>eliminated all possibilities other than something internal to the=
 mag.&nbsp;<br>What could cause that? The A&amp;E mentioned something about=
 a metal finger&nbsp;<br>down in the bottom of the hole. Anyone know what t=
hat does? Could a&nbsp;<br>shorted capacitor- the one that was supposedly j=
ust replaced - cause&nbsp;<br>this problem? My logs are at the hangar but I=
 think this is a S4LN-21&nbsp;<br>mag. Any advice would be appreciated, 'ca=
use I'm getting real tired of&nbsp;<br>going backwards on this project.</sp=
an><br></div></div></body></html>
--1072509510-1966577073-1386241751=:59618--