X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2632016 for flyrotary@lancaironline.net; Sat, 05 Jan 2008 09:17:08 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([24.74.103.61]) by cdptpa-omta02.mail.rr.com with SMTP id <20080105141627.SLYB14132.cdptpa-omta02.mail.rr.com@edward2> for ; Sat, 5 Jan 2008 14:16:27 +0000 Message-ID: <001701c84fa5$9abd8950$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Wiring Date: Sat, 5 Jan 2008 09:16:46 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0014_01C84F7B.B1A4D300" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 This is a multi-part message in MIME format. ------=_NextPart_000_0014_01C84F7B.B1A4D300 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bob, here is some quick checks you may want to make before connecting = the battery (if you have not already done so). 1. . Turn off all switches. Take a volt/ohm meter and place it on a = resistive setting. Without the battery connected - place one probe on = the + battery connection and the other - probe to an electrical ground = (could be the negative battery terminal). You should get an open = reading - infinite resistance. Because with off equipment turned off = there should be no path from + terminal to - terminal. =20 If you get a short/ low ohm indication then I would suspect a = short/mis-wiring some place. Try turning on a simple circuit such as = your landing lights, pumps, etc. The resistance reading should decrease = as more circuits are brought on-line.=20 2. With the - probe on the negative battery terminal - check that you = have a good ground connection to the engine block by touching several = places on the block with the + probe. People have fried electronics = when all the current tried to go through them due to lack of a properly = connect ground between engine and rest of electrical circuit. 3. With all electrical switches/components off connect your terminals to = the battery. IF step 1 check was OK then you should get no/very minimal = spark when you make the final connection. I think somebody else = mentioned if you get a big spark - immediately remove the connection = (although it may be too late). Also if you have an amp meter in your = circuit, monitor it for any indication of current drain when you first = hook up the battery. A volt meter drop might indicate a massive current = drain but would I wouldn't rely on it. =20 4. IF you are really uncomfortable, you could try sticking a 5-10 amp = fuse/CB in line with your battery terminal before you connect it up. It = should remain untripped if there is no current flow. If it doesn't trip, = Then you can remove it and connect directly to the battery. IF it = trips, then that tells you that you have something drawing juice even = when you think you have every thing off. That's about all I can think of. Al already mentioned the liquid = fortification that may be helpful {:>) Good Luck Ed ----- Original Message -----=20 From: BMears9413@aol.com=20 To: Rotary motors in aircraft=20 Sent: Friday, January 04, 2008 11:12 PM Subject: [FlyRotary] Wiring I'm just about done with my wiring. Triple checked it all. Which = doesn't mean a lot since I can over look a tool for hours to find it = right where I thought it was in the first place. Now my question....how = do I get over the fear to hook up a battery!!!! Bog Mears Supermarine Spitfire -------------------------------------------------------------------------= ----- Start the year off right. Easy ways to stay in shape in the new year. ------=_NextPart_000_0014_01C84F7B.B1A4D300 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bob, here is some quick checks you may want to = make=20 before connecting the battery (if you have not already done = so).
 
1.  . Turn off all switches.  =  Take a=20 volt/ohm meter and place it on a resistive setting.  Without the = battery=20 connected - place one probe on the + battery connection and the = other -=20 probe to an electrical  ground (could be the negative battery=20 terminal).  You should get an open reading - infinite = resistance. =20 Because with off equipment turned off there should be no path from + = terminal to=20 - terminal. 
 
If you get a short/ low ohm indication then I would = suspect a=20 short/mis-wiring some place.  Try turning on a simple circuit such = as your=20 landing lights, pumps, etc.  The resistance reading should decrease = as more=20 circuits are brought on-line.
 
 2.  With the - probe on the negative = battery=20 terminal - check that you have a good ground connection to the engine = block by=20 touching several places on the block with the + probe.  People have = fried=20 electronics when all the current tried to go through them due to lack of = a=20 properly connect ground between engine and rest of electrical=20 circuit.
 
3. With all electrical switches/components off = connect=20 your terminals to the battery.  IF step 1 check was OK then you = should get=20 no/very minimal spark when you make the final connection.  I think = somebody=20 else mentioned if you get a big spark - immediately remove the = connection=20 (although it may be too late).  Also if you have an amp meter in = your=20 circuit, monitor it for any indication of current drain when you first = hook up=20 the battery.  A volt meter drop might indicate a massive current = drain but=20 would  I wouldn't rely on it. 
 
4.  IF you are really uncomfortable, you could = try=20 sticking a 5-10 amp fuse/CB in line with your battery terminal before = you=20 connect it up.  It should remain untripped if there is no current=20 flow. If it doesn't trip, Then you can remove it and connect = directly=20 to the battery.  IF it trips, then that tells you that you have = something=20 drawing juice even when you think you have every thing off.
 
 
That's about all I can think of.  Al already = mentioned=20 the liquid fortification that may be helpful {:>)
 
Good Luck
 
Ed
 
 
 
 
----- Original Message -----
From:=20 BMears9413@aol.com
Sent: Friday, January 04, 2008 = 11:12=20 PM
Subject: [FlyRotary] = Wiring

I'm just about done with my wiring. Triple checked it all. Which = doesn't=20 mean a lot since I can over look a tool for hours to find it right = where I=20 thought it was in the first place. Now my question....how do I get = over the=20 fear to hook up a battery!!!!
 
Bog Mears
Supermarine Spitfire



Start the year off right. Easy ways to stay in shape in the new year.=20
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