Return-Path: Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 620622 for flyrotary@lancaironline.net; Tue, 25 Jan 2005 00:04:33 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.65; envelope-from=sqpilot@bellsouth.net Received: from [209.214.44.213] by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050125050356.LMCS1992.imf17aec.mail.bellsouth.net@[209.214.44.213]> for ; Tue, 25 Jan 2005 00:03:56 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [265.7.3]); Mon, 24 Jan 2005 23:03:50 -0600 Message-ID: <006a01c5029b$4120c420$d52cd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Battery load test Date: Mon, 24 Jan 2005 23:03:48 -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-41F5D3360029=======" --=======AVGMAIL-41F5D3360029======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_0067_01C50268.F6569190" ------=_NextPart_000_0067_01C50268.F6569190 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable I guess the old saying is true....great minds think alike. Paul Conner If at first you don't succeed, do it like your wife told you to. ----- Original Message -----=20 From: Finn Lassen=20 To: Rotary motors in aircraft=20 Sent: Monday, January 24, 2005 9:55 PM Subject: [FlyRotary] Re: Battery load test Funny you should mention that. That's what I use as a master switch = (this one is a round one with a red plastic "key"), mounted directly on = the battery plus terminal. No master contactor (solenoid) to drain the = battery. I usually leave it on when not tied down at home and always get = helpful comments about how I've left the power on (engine monitor = warning LED is lit). But actual power draw between my EM and handheld = Icom and GPS is well less that 0.5 amp. Can sit there 1/2 day and still = no problem starting. And yes it is very convenient when fiddling with engine, starter, etc. = to be comfortable that there is no power out there to be shorted to = ground. Finn Paul wrote: 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. Mark S. =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 -------------------------------------------------------------------------= --- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.7.3 - Release Date: 1/24/2005 = -------------------------------------------------------------------------= --- Homepage: http://www.flyrotary.com/ Archive: http://lancaironline.net/lists/flyrotary/List.html =20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.7.3 - Release Date: 1/24/2005 ------=_NextPart_000_0067_01C50268.F6569190 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
I guess the old saying is true....great = minds think=20 alike.   Paul Conner
 
If at first you don't succeed, do it = like your wife=20 told you to.
----- Original Message -----
From:=20 Finn=20 Lassen
Sent: Monday, January 24, 2005 = 9:55=20 PM
Subject: [FlyRotary] Re: = Battery load=20 test

Funny you should mention that. That's what I use as a = master=20 switch (this one is a round one with a red plastic "key"), mounted = directly on=20 the battery plus terminal. No master contactor (solenoid) to drain the = battery. I usually leave it on when not tied down at home and always = get=20 helpful comments about how I've left the power on (engine monitor = warning LED=20 is lit). But actual power draw between my EM and handheld Icom and GPS = is well=20 less that 0.5 amp. Can sit there 1/2 day and still no problem=20 starting.

And yes it is very convenient when fiddling with = engine,=20 starter, etc. to be comfortable that there is no power out there to be = shorted=20 to ground.

Finn

Paul wrote:
Hi, Mark....unfortunately, I am = presently=20 working as a heavy truck mechanic (18 wheelers), and I have been on = many a=20 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=20 again.  On two of the trucks, I could not get to them in time, = and it=20 burned the wiring harness so badly that the whole harness had to be=20 replaced.  The other tractor burned to the ground. Melted all = the=20 tires, all windows gone, all fiberglass hood and fender parts = melted....not=20 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=20 disconnect the battery. Hopefully I will never need it, but it's = nice to=20 know it's there just in case.  I have been looking at the = various=20 battery switches/quick disconnects at West Marine, and have been = considering=20 one for my aircraft.  Heck, it's convenient jus to be able to=20 quick-disconnect the battery when working on the panel, fuel pumps, = spark=20 plugs/wires, etc.  Just a thought.  Paul = Conner
-----=20 Original Message ----- From:=20 Mark R Steitle = To:=20 Rotary motors in = aircraft=20 Sent:=20 Monday, January 24, 2005 8:47 AM Subject:=20 [FlyRotary] Re: Battery load test

Wendell,

There = is some=20 benefit to using a starter relay in addition to the starter=20 solenoid.  The argument is that this arrangement will keep = the fat=20 wire going to the starter from being always hot.  Also, = I=92ve heard=20 stories of starter solenoids sticking with no way to stop the = starter=20 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=20 solenoid (mounted on firewall) rather than running it all the way = back to=20 the battery (in the tail).  I also picked up on the same B+ = terminal=20 to provide power to the Main Power Buss.  This saved about = 25=92 of=20 heavy gauge wire, offsetting the weight of the=20 solenoid.

Mark=20 S.

 =20   

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