Return-Path: Received: from fed1rmmtao09.cox.net ([68.230.241.30] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 552672 for flyrotary@lancaironline.net; Wed, 01 Dec 2004 12:37:24 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.30; envelope-from=ALVentures@cox.net Received: from BigAl ([68.107.116.221]) by fed1rmmtao09.cox.net (InterMail vM.6.01.04.00 201-2131-117-20041022) with ESMTP id <20041201173654.IAUI14654.fed1rmmtao09.cox.net@BigAl> for ; Wed, 1 Dec 2004 12:36:54 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Another precautionary landing Date: Wed, 1 Dec 2004 09:36:54 -0800 Message-ID: <000901c4d7cc$5968ff10$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01C4D789.4B483010" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_000A_01C4D789.4B483010 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit John- You probably already have this covered...but just in case...make sure you don't have any Teflon tape or pipe thread sealant on you single wire sensors. They are grounded through the housing and Teflon tape and thread sealant insulate them from the engine ground. ------------ Well, I don't know - I used thread compound on the sensors, then measured resistance from sensor case to ground. Zero (below 1 miliohm) in every case. I think a light coat of thread compound is important to lube and seal, and a well tightened tapered thread is going to give good contact. FWIW, Al ------=_NextPart_000_000A_01C4D789.4B483010 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

John-

You probably already have this covered...but just in case...make = sure

you don't have any Teflon tape or pipe thread sealant on you = single

wire sensors. They are grounded through the housing and Teflon = tape

and thread sealant insulate them from the engine ground.

------------

Well, I don’t know - I used = thread compound on the sensors, then measured resistance from sensor case to = ground.  Zero (below 1 miliohm) in every case.  I think a light coat of thread = compound is important to lube and seal, and a well tightened tapered thread is = going to give good contact.

 

FWIW,

 

Al

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