Return-Path: Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 619801 for flyrotary@lancaironline.net; Mon, 24 Jan 2005 14:21:12 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.165] by imf22aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050124192035.ZOWQ2068.imf22aec.mail.bellsouth.net@[209.214.45.165]> for ; Mon, 24 Jan 2005 14:20:35 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.7.3]); Mon, 24 Jan 2005 13:20:30 -0600 Message-ID: <005701c50249$c38ec8f0$a52dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Battery load test Date: Mon, 24 Jan 2005 13:20:28 -0600 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 Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-41F54A7E562C=======" --=======AVGMAIL-41F54A7E562C======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_0054_01C50217.78D0A450" ------=_NextPart_000_0054_01C50217.78D0A450 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Hi, Mark....unfortunately, I am presently working as a heavy truck = mechanic (18 wheelers), and I have been on many a road call where the = starter was stuck engaged.On a few units, once I disconnected the = batteries (4 of them) the starter would be OK to use again. On two of = the trucks, I could not get to them in time, and it burned the wiring = harness so badly that the whole harness had to be replaced. The other = tractor burned to the ground. Melted all the tires, all windows gone, = all fiberglass hood and fender parts melted....not a pretty picture.=20 I have a quick disconnect on the negative terminal on my motor = home so that if the starter solenoid should hang up, I can simply open = the blade-style switch and disconnect the battery. Hopefully I will = never need it, but it's nice to know it's there just in case. I have = been looking at the various battery switches/quick disconnects at West = Marine, and have been considering one for my aircraft. Heck, it's = convenient jus to be able to quick-disconnect the battery when working = on the panel, fuel pumps, spark plugs/wires, etc. Just a thought. Paul = Conner ----- Original Message -----=20 From: Mark R Steitle=20 To: Rotary motors in aircraft=20 Sent: Monday, January 24, 2005 8:47 AM Subject: [FlyRotary] Re: Battery load test Wendell, There is some benefit to using a starter relay in addition to the = starter solenoid. The argument is that this arrangement will keep the = fat wire going to the starter from being always hot. Also, I've heard = stories of starter solenoids sticking with no way to stop the starter = until it runs the battery dead. Not sure I buy that argument though. I = tied my alternator B+ wire to the battery terminal on the solenoid = (mounted on firewall) rather than running it all the way back to the = battery (in the tail). I also picked up on the same B+ terminal to = provide power to the Main Power Buss. This saved about 25' of heavy = gauge wire, offsetting the weight of the solenoid. =20 Mark S. =20 =20 =20 Refering to the battery going directly to the starter, most all = starters with built in solinoids are so wired. I remember having a = starter to hang on occasion and drain the battery or ruin the starter. = Is it practicle to use a relay in conjunction with the starter/solenoid = set up? Wendell -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.7.2 - Release Date: 1/21/2005 ------=_NextPart_000_0054_01C50217.78D0A450 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Hi, Mark....unfortunately, I am = presently working=20 as a heavy truck mechanic (18 wheelers), and I have been on many a road = call=20 where the starter was stuck engaged.On a few units, once I disconnected = the=20 batteries (4 of them) the starter would be OK to use again. =  On two of=20 the trucks, I could not get to them in time, and it burned the wiring = harness so=20 badly that the whole harness had to be replaced.  The other tractor = burned=20 to the ground. Melted all the tires, all windows gone, all fiberglass = hood and=20 fender parts melted....not a pretty picture. 
      I have a = quick=20 disconnect on the negative terminal on my motor home so that if the = starter=20 solenoid should hang up, I can simply open the blade-style switch and = disconnect=20 the battery. Hopefully I will never need it, but it's nice to know it's = there=20 just in case.  I have been looking at the various battery = switches/quick=20 disconnects at West Marine, and have been considering one for my = aircraft. =20 Heck, it's convenient jus to be able to quick-disconnect the battery = when=20 working on the panel, fuel pumps, spark plugs/wires, etc.  Just a=20 thought.  Paul Conner
----- Original Message -----
From:=20 Mark R Steitle =
Sent: Monday, January 24, 2005 = 8:47=20 AM
Subject: [FlyRotary] Re: = Battery load=20 test

Wendell,

There is = some benefit=20 to using a starter relay in addition to the starter solenoid.  = The=20 argument is that this arrangement will keep the fat wire going to the = starter=20 from being always hot.  Also, I=92ve heard stories of starter = solenoids=20 sticking with no way to stop the starter until it runs the battery = dead. =20 Not sure I buy that argument though.  I tied my alternator B+ = wire to the=20 battery terminal on the solenoid (mounted on firewall) rather than = running it=20 all the way back to the battery (in the tail).  I also picked up = on the=20 same B+ terminal to provide power to the Main Power Buss.  This = saved=20 about 25=92 of heavy gauge wire, offsetting the weight of the=20 solenoid.

 

Mark=20 S.

 =20   

 

 

Refering to the battery going = directly=20 to the starter,  most all starters with built in solinoids are = so=20 wired.  I remember having a starter to hang on occasion and = drain the=20 battery or ruin the starter.  Is it practicle to use a relay in = conjunction with the starter/solenoid set=20 up?

Wendell

No virus found in this incoming message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.300 / Virus Database: 265.7.2 - Release = Date:=20 1/21/2005
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