X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail20.syd.optusnet.com.au ([211.29.132.201] verified) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTPS id 719813 for flyrotary@lancaironline.net; Mon, 12 Sep 2005 20:52:58 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.201; envelope-from=lendich@optusnet.com.au Received: from george (d58-104-232-31.dsl.nsw.optusnet.com.au [58.104.232.31]) by mail20.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j8D0qAH4008245 for ; Tue, 13 Sep 2005 10:52:11 +1000 Message-ID: <004801c5b7fd$ab97ac20$1fe8683a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Ignition Coil Connectors Date: Tue, 13 Sep 2005 10:54:17 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0045_01C5B851.7CF43C90" 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 This is a multi-part message in MIME format. ------=_NextPart_000_0045_01C5B851.7CF43C90 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Ed, I'm getting there ! George ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Tuesday, September 13, 2005 9:03 AM Subject: [FlyRotary] Re: Ignition Coil Connectors ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Monday, September 12, 2005 5:23 PM Subject: [FlyRotary] Re: Ignition Coil Connectors Mark, Good suggestions, never thought of that. I went to a auto supply specialist the other day and he told me that = the wiring is only + ve and - ve ( two wires) and in fact some coils ( = in Australia) have non-plug type connections ( thread and lock nut). Does Tracy use the LS 1 coils for any particular reason i.e.because = there much lighter or something like that. I'm led to believe they are = very reliable and they don't stock them because there is little to no = demand for non-genuine replacement - so that's good info. They are found = in the GM V8 here in Australia but the cost is about $150 from GMH ( = your GMC) Also can someone explain the wiring of the injectors, I didn't ask = about that. George ( down under) I'll give the injector wiring a shot, George. There's not much to it compared to the ignition wiring. The = injectors each have two leads coming out of their electrical connector. = One lead has 12-14Volts on it and the other lead (it doesn't matter = which lead) is attached to a lead from the EC2 (or some Fuel Injection = computer unit) which is connected internally to a high power = transistor. When the EC2 computer turns on the transistor it grounds = (completes the circuit) for that injector. A completed circuit =3D = current flow =3D injector open =3D fuel flow =3D power. When the "ON" = time equals that determined by the computer for the power = requirements/conditions - the EC2 turns off the transistor opening the = injector power connection to ground and the injector closes until the = next pulse. So, that basically means one side of each injector is wired to 12V = (often with a switch/circuit breaker) and the other side to a lead from = the injection computer. Tracy's Ec2 has specific instructions for how to hook up the wiring = for the injectors (including the resistors if you are using low = impedance injectors) and their disabling switches. =20 The basic things you need are 1. The electrical connector (female) which plugs onto the injector = connector. Most of these have keys to prevent you from plugging a low = impedance injector into a circuit meant for a high impedance injector - = doing that could damage the computer. That means you need the female = connector that has the key position to match you injectors. The key = (raised bit of plastic) is generally (but not always) in the center of = the connector for the low impedance injector and off-center for the low = impedance injectors. So you need to check and be certain. 2. Wire to hook up your four injectors (or however many) to the = controller, switches and power. So for 4 injectors you should have 4 = pairs of wire. One wire to the power (through a switch/circuit breaker = or whatever) and the other to the correct terminal on the computer. 3. It is important to hook up the correct injector positions (such = as primary, secondary) to the right leads from the computer to make = certain that when the computer thinks its turning on the primary = injectors (or secondary) - that it is. It might run hooked up wrong - = but trouble shooting it that way can drive you crazy {:>) Ed A ------=_NextPart_000_0045_01C5B851.7CF43C90 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Ed,
I'm getting there !
George
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Tuesday, September 13, = 2005 9:03=20 AM
Subject: [FlyRotary] Re: = Ignition Coil=20 Connectors

 
----- Original Message -----
From:=20 George Lendich
To: Rotary motors in = aircraft=20
Sent: Monday, September 12, = 2005 5:23=20 PM
Subject: [FlyRotary] Re: = Ignition Coil=20 Connectors

Mark,
Good suggestions, never thought of=20 that.
I went to a auto supply specialist = the other=20 day and he told me that the wiring is only + ve and - ve ( two = wires) and in=20 fact some coils ( in Australia) have non-plug type connections = ( thread=20 and lock nut).
Does Tracy use the LS 1 coils for = any=20 particular reason i.e.because there much lighter or something like = that. I'm=20 led to believe they are very reliable and they don't stock them = because=20 there is little to no demand for non-genuine replacement - so that's = good=20 info. They are found in the GM V8 here in Australia but the cost is = about=20 $150 from GMH ( your GMC)
 
Also can someone explain the wiring = of the=20 injectors, I didn't ask about that.
George ( down under)
 
I'll give the injector wiring a shot,=20 George.
 
There's not much to it compared to the = ignition=20 wiring.  The injectors each have two leads coming out of their=20 electrical connector.  One lead has 12-14Volts on it and the = other lead=20 (it doesn't matter which lead) is attached to a lead from = the EC2=20 (or some Fuel Injection computer unit)  which is connected = internally=20 to a high power transistor.   When the EC2 computer turns = on the=20 transistor it grounds (completes the circuit) for that = injector.  A=20 completed circuit =3D current flow =3D injector open =3D fuel flow = =3D power. =20 When the "ON" time equals that determined by the computer for the = power=20 requirements/conditions - the EC2 turns off the transistor opening = the=20 injector power connection to ground and the injector closes until = the next=20 pulse.
 
So, that basically means one side of each = injector is=20 wired to 12V (often with a switch/circuit breaker) and the other = side to a=20 lead from the injection computer.
 
Tracy's Ec2 has specific instructions for = how to hook=20 up the wiring for the injectors (including the resistors if you are = using=20 low impedance injectors) and their disabling switches.  =
 
The basic things you need are
 
1.  The electrical connector (female) = which plugs=20 onto the injector connector.  Most of these have keys to = prevent you=20 from plugging a low impedance injector into a circuit meant for a = high=20 impedance injector  - doing that could damage the = computer.  That=20 means you need the female connector that has the key position to = match you=20 injectors.  The key (raised bit of plastic) is generally (but = not=20 always) in the center of the connector for the low impedance = injector and=20 off-center for the low impedance injectors.  So you need to = check and=20 be certain.
 
 2.  Wire to hook up your four = injectors (or=20 however many) to the controller, switches and power.  So for 4=20 injectors you should have 4 pairs of wire.  One wire to the = power=20 (through a switch/circuit breaker or whatever) and the other to the = correct=20 terminal on the computer.
 
3.  It is important to hook up the = correct=20 injector positions (such as primary, secondary) to the right leads = from the=20 computer to make certain that when the computer thinks its turning = on the=20 primary injectors (or secondary) - that it is.  It might = run=20 hooked up wrong - but trouble shooting it that way can drive you = crazy=20 {:>)
 
 
Ed=20 A
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