X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from x2.itlnet.net ([64.19.112.8] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2633747 for flyrotary@lancaironline.net; Sun, 06 Jan 2008 21:32:21 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.19.112.8; envelope-from=jwvoto@itlnet.net Received: from x2.itlnet.net (localhost.localdomain [127.0.0.1]) by x2.itlnet.net (8.13.1/8.13.1) with SMTP id m072VUnk019708 for ; Sun, 6 Jan 2008 20:31:30 -0600 Received: from itlnet.net (email1.itlnet.net [192.168.10.156]) by x2.itlnet.net (x2.itlnet.net [172.16.1.147]) id k05KVU3169255024J1 ret-id none; Sun, 06 Jan 2008 20:31:30 -0600 Received: from JWVOTO (unverified [64.19.115.69]) by itlnet.net (SurgeMail 3.8p) with ESMTP id 171069-1769559 for ; Sun, 06 Jan 2008 20:31:28 -0600 Message-ID: <009b01c850d5$b3be2be0$48731340@JWVOTO> From: "Wendell Voto" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Wiring Date: Sun, 6 Jan 2008 20:33:01 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0098_01C850A3.54DFBEE0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 X-Authenticated-User: jwvoto@itlnet.net X-ITLnet-MailScanner-Information: Please contact the ISP for more information X-ITLnet-MailScanner: Found to be clean X-ITLnet-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-2.599, required 4, autolearn=not spam, BAYES_00 -2.60, HTML_MESSAGE 0.00, SPF_HELO_PASS -0.00) This is a multi-part message in MIME format. ------=_NextPart_000_0098_01C850A3.54DFBEE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Subject: [FlyRotary] Re: Wiring While on the subject of electricity, I am looking for a battery and = the Odyssey seems the most cost effective; however the PC625 stats show = better the the 625 than for the PC680 which has more cranking amps but = other specs are down for the 680 vs the 625. Can the PC625 crank the = rotary engine in cold weather (20 F)? Wendell 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_0098_01C850A3.54DFBEE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Subject: [FlyRotary] Re: Wiring
While on = the subject of=20 electricity, I am looking for a battery and the Odyssey seems the most = cost=20 effective; however the PC625 stats show better the the 625 than for = the PC680=20 which has more cranking amps but other specs are down for the 680 vs = the=20 625.  Can the PC625 crank the rotary engine in cold weather (20=20 F)?
Wendell

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=20 to - terminal. 
 
If you get a short/ low ohm indication then I = would suspect=20 a short/mis-wiring some place.  Try turning on a simple circuit = such as=20 your landing lights, pumps, etc.  The resistance reading should = decrease=20 as more 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=20 get no/very minimal spark when you make the final connection.  I = think=20 somebody else mentioned if you get a big spark - immediately remove = the=20 connection (although it may be too late).  Also if you have an = amp meter=20 in your circuit, monitor it for any indication of current drain when = you first=20 hook up the battery.  A volt meter drop might indicate a massive = current=20 drain but 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 = 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=20 something drawing juice even when you think you have every thing=20 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
To: Rotary motors in = aircraft=20
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=20 doesn't mean a lot since I can over look a tool for hours to find it = right=20 where I thought it was in the first place. Now my question....how do = I get=20 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.=20
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