X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 10 Dec 2013 12:10:33 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-dupuy.atl.sa.earthlink.net ([209.86.89.62] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6633289 for lml@lancaironline.net; Tue, 10 Dec 2013 11:06:12 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.62; envelope-from=panelmaker@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=fLJYABIlfBvTgAxb19HQCm+m0dhMOz3rvnHIk2nTG+EreJwxRsGZR24TXuftdj8f; h=Received:From:To:References:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:In-Reply-To:Thread-Index:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [209.173.71.64] (helo=COMPUTER1) by elasmtp-dupuy.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1VqPoX-0001g1-9j for lml@lancaironline.net; Tue, 10 Dec 2013 11:05:37 -0500 From: "Jim Nordin" X-Original-To: "'Lancair Mailing List'" References: Subject: Bendix S4LN-21 Mag shorted? X-Original-Date: Tue, 10 Dec 2013 10:05:41 -0600 X-Original-Message-ID: <63A098BCC7904D45A355B4B37A181619@COMPUTER1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0084_01CEF58F.629A9770" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: Thread-Index: Ac71rXTqlvMtt4c9R3uvltQC937hkwAE6h+g X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-ELNK-Trace: bdfc62829fd2a80cc8ad50643b1069f8239a348a220c2609c21d89df7af54b616efedb98934fdb50350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 209.173.71.64 This is a multi-part message in MIME format. ------=_NextPart_000_0084_01CEF58F.629A9770 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Too bad professional organizations that sell us approved parts/systems still use antiquated cheap methods of removing insulation from wire. Strippers that cut insulation (with steel jaws) then pull the insulation from the wire should never be used in aircraft. A small nick will eventually be the point of fracture in copper due to the vibrations of aircraft. What to do? Use electric strippers that cause no nicks. Jim _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Steve Colwell Sent: Tuesday, December 10, 2013 7:41 AM To: lml@lancaironline.net Subject: [LML] Bendix S4LN-21 Mag shorted? John, When the connector to the P-lead wire at one mag was installed and the P-lead Shield was stripped, the cut went through the P-lead insulation. It didn't show up for about 300 hours until it started intermittently shorting for about 1 minute then it would be OK for hours. Mucho time checking/testing went into that one. The wire had to be moved just right to short. Steve Colwell Legacy 550 But this saga isn't over yet, because I checked the right mag and it reads open at the P-lead terminal. To be continued... ------=_NextPart_000_0084_01CEF58F.629A9770 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Too bad professional organizations that sell us approved parts/systems still use = antiquated cheap methods of removing insulation from wire. Strippers that cut = insulation (with steel jaws) then pull the insulation from the wire should never be used = in aircraft. A small nick will eventually be the point of fracture in = copper due to the vibrations of aircraft.

What to do? Use electric strippers that cause no nicks.

Jim

 

From: Lancair Mailing List [mailto:lml@lancaironline.net] = On Behalf Of Steve Colwell
Sent: Tuesday, December = 10, 2013 7:41 AM
To: = lml@lancaironline.net
Subject: [LML] Bendix = S4LN-21 Mag shorted?

 

 

John,=

 

When the = connector to the P-lead wire at one mag was installed and the P-lead Shield was = stripped, the cut went through the P-lead insulation.  It didn’t show = up for about 300 hours until it started intermittently shorting for about 1 = minute then it would be OK for hours.  Mucho time checking/testing went = into that one.  The wire had to be moved just right to short. =   

 

Steve = Colwell  Legacy 550

 

But this saga isn't over yet, because I = checked the right mag and it reads open at the P-lead terminal. To be = continued...

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