Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 619506 for flyrotary@lancaironline.net; Mon, 24 Jan 2005 12:16:06 -0500 Received-SPF: none receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.rr.com [24.74.185.127]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j0OHFWCi026999 for ; Mon, 24 Jan 2005 12:15:33 -0500 (EST) Message-ID: <000c01c50238$9fbe4c40$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Battery load test Date: Mon, 24 Jan 2005 12:17:46 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01C5020E.B6AF0BD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0009_01C5020E.B6AF0BD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: Mark R Steitle=20 To: Rotary motors in aircraft=20 Sent: Monday, January 24, 2005 9:47 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 Wendell, I would say that is still a standard for aircraft - for = some on the reasons already mentioned. With a relay(Contactor) you can = break the circuit to the starter should it stick or short. I also have = a LED above my starter switch that is on so long as there is juice to = the starter - that way you can tell if the starter is still engaged = after the engine start - happens occasionally and ruins starts and = sometimes the gear teeth on the starter ring. However, there are folks who are now doing away with the contactor = feeling it is heavy and there is low risk of a hang-up happening. Ed A ------=_NextPart_000_0009_01C5020E.B6AF0BD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 Mark R Steitle =
Sent: Monday, January 24, 2005 = 9:47=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

 

Wendell, I would say that is = still a=20 standard for aircraft - for some on the reasons already = mentioned. =20 With a relay(Contactor) you can break the circuit to the starter = should it=20 stick or short.  I also have a LED above my starter switch that = is on=20 so long as there is juice to the starter - that way you can tell if = the=20 starter is still engaged after the engine start - happens = occasionally and=20 ruins starts and sometimes the gear teeth on the starter=20 ring.

 

However, there are folks who = are now=20 doing away with the contactor feeling it is heavy and there is low = risk of a=20 hang-up happening.

 

Ed=20 = A

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