X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.52.245.18] (HELO ispwestemail2.mdeinc.com) by logan.com (CommuniGate Pro SMTP 4.3.2) with ESMTP id 964921 for flyrotary@lancaironline.net; Thu, 26 May 2005 23:28:55 -0400 Received-SPF: none receiver=logan.com; client-ip=216.52.245.18; envelope-from=wschertz@ispwest.com Received: from 7n7z201 (unverified [63.13.186.15]) by ispwestemail2.mdeinc.com (Vircom SMTPRS 4.1.361.20) with SMTP id for ; Thu, 26 May 2005 20:28:04 -0700 Message-ID: <07b201c5626c$5b281270$6401a8c0@7n7z201> From: "William" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] D-sub connectors - Prewired cables Date: Thu, 26 May 2005 22:29:56 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_07AF_01C56242.71F655E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_07AF_01C56242.71F655E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The crimp on connectors are much easier to use (make a good connection). = I am with Al on this one. Bill Schertz KIS Cruiser # 4045 ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Thursday, May 26, 2005 11:20 AM Subject: [FlyRotary] D-sub connectors - Prewired cables One thing to consider is that with a canard pusher you can't get a = prewired harness installed easily because the plugs won't go down the = electrical conduit. A harness could be installed during the fuselage = construction, but once the fuselage is built you either have to run the harness another = way, add a connector, or snip and resolder all the wires. One easy solution is to use the gold plated, machined crimp-on d-sub = pins. Put all the pins on, but pull the wire bundle to where it goes = before snapping the pins into the connector.=20 After doing all my avionics and EFIS plugs with the gold plated = crimp-on D-subs, I got to love them. Quick easy, and with the special = D-sub crimp tool; very secure connections. Snap them into the connector = after making and checking the crimp. I'm recommending that Tracy go that route. Yeah, it takes a good tool = ($44 t Aeroelectric = http://www.bandc.biz/cgi-bin/ez-catalog/cat_display.cgi?9X358218#RCT-3) = I believe in soldered connections for all critical leads that carry much = current, but the risks involved in soldering those little solder-socket = d-subs that are already in the connector - I don't think so.=20 It is especially important on the EM2 P-1 connector because the TC = wire does not solder well. Tinned copper works OK, but the TC wires do = not form a eutectic at the joint, and you only get a 'mechanical' = connection anyway. I found I had to use additional acid to get the = solder to wet out on these wires - risk of corrosion in the future. If I = were doing that one over, I'd toss that connector and get a new one with = the plated crimp-on pins. Any seconds to that motion (Tracy needs a little more pressure; don't = ya think :) Al ------=_NextPart_000_07AF_01C56242.71F655E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
The crimp on connectors are much easier = to use=20 (make a good connection). I am with Al on this one.
Bill Schertz
KIS Cruiser # = 4045
----- Original Message -----
From:=20 Al = Gietzen=20
Sent: Thursday, May 26, 2005 = 11:20=20 AM
Subject: [FlyRotary] D-sub = connectors -=20 Prewired cables

 

One thing to consider is that with a canard = pusher you=20 can't get a prewired

harness installed easily because the plugs = won't go=20 down the electrical

conduit. A harness could be installed during = the=20 fuselage construction, but

once the fuselage is built you either have = to run the=20 harness another way,

add a connector, or snip and resolder all = the=20 wires.

 

One easy = solution=20 is to use the gold plated, machined crimp-on d-sub pins.  Put all = the=20 pins on, but pull the wire bundle to where it goes before snapping the = pins=20 into the connector.

 

After = doing all my=20 avionics and EFIS plugs with the gold plated crimp-on D-subs, I got to = love=20 them.  Quick easy, and with the special D-sub crimp tool; very = secure=20 connections. Snap them into the connector after making and checking = the=20 crimp.

 

I=92m = recommending=20 that Tracy go=20 that route.  Yeah, it takes a good tool ($44 t Aeroelectric http://www.bandc.biz/cgi-bin/ez-catalog/cat_display.cgi?9X358218#R= CT-3) =20 I believe in soldered connections for all critical leads that carry = much=20 current, but the risks involved in soldering those little = solder-socket d-subs=20 that are already in the connector =96 I don=92t think so. =

 

 It = is=20 especially important on the EM2 P-1 connector because the TC wire does = not=20 solder well.  Tinned copper works OK, but the TC wires do not = form a=20 eutectic at the joint, and you only get a =91mechanical=92 connection = anyway. I=20 found I had to use additional acid to get the solder to wet out on = these wires=20 =96 risk of corrosion in the future. If I were doing that one over, = I=92d toss=20 that connector and get a new one with the plated crimp-on=20 pins.

 

Any = seconds to=20 that motion (Tracy=20 needs a little more pressure; don=92t ya think :)

 

Al

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