Mailing List lml@lancaironline.net Message #68493
From: Jim Nordin <panelmaker@earthlink.net>
Sender: <marv@lancaironline.net>
Subject: Bendix S4LN-21 Mag shorted?
Date: Tue, 10 Dec 2013 12:10:33 -0500
To: <lml@lancaironline.net>

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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