X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 5.0c4) with ESMTP id 764994 for flyrotary@lancaironline.net; Fri, 14 Oct 2005 15:22:20 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-025-165.carolina.res.rr.com [24.74.25.165]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j9EJLX1v017978 for ; Fri, 14 Oct 2005 15:21:34 -0400 (EDT) Message-ID: <000c01c5d0f4$7ea7f020$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: injector size stop. I had both injectors wired (as per schematic) to =20 Date: Fri, 14 Oct 2005 15:21:36 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01C5D0D2.F75D17B0" 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 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0009_01C5D0D2.F75D17B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: Bulent Aliev=20 To: Rotary motors in aircraft=20 Sent: Friday, October 14, 2005 3:08 PM Subject: [FlyRotary] Re: injector size stop. I had both injectors = wired (as per schematic) to =3D20 On Oct 14, 2005, at 2:58 PM, Ed Anderson wrote: ----- Original Message ----- From: Bulent Aliev To: Rotary motors in aircraft Sent: Friday, October 14, 2005 2:45 PM Subject: [FlyRotary] Re: injector size stop. I had both injectors = wired (as per schematic) to =3D20 On Oct 14, 2005, at 2:41 PM, Ed Anderson wrote: ----- Original Message ----- From: Bulent Aliev To: Rotary motors in aircraft Sent: Friday, October 14, 2005 2:32 PM Subject: [FlyRotary] Re: injector size stop. I had both = injectors wired (as per schematic) to =3D20 I think you were wise to split your injectors power like = that, I did not do that and in hind sight wish I had for the reason you = cited. However, I don't see how adding a circuit breaker would do = that. Now, if you are leaving even 1 of the CB ON then the EC2 is = receiving power even if the EC2 CB is pulled. As long as either the = primary or secondary injector has power on the line (either of your = injector CB is pushed in) then the EC2 will get this voltage. Tracy = used to have an LED on the program button of the EC2 and it would light = up when the EC2 controller had power - that is another way I found out = about the sneak circuit. If I turned on an injector toggle the EC2 = program button LED would come on even though its power switch/CB was = off. So do you get the 6.5volts when both injector CB are pulled? Ed When I turn on the P.injector switch ON, the EM lights up and = I get 6.5V Voltage reading and "Low Voltage" warning on the EM2 display. Buly This happens even when the injector power CB is pulled on = the primary injectors?? Ed I can not disable my CB. But I can pull the connector off? Buly Ok, so there is power to your primary injector switch since the CB = is not pulled. In that case, I suspect that your EM2 is sensing the = "sneakcircuit" voltage from your EC2. I can think of two things to try = depending on how much trouble each is to do 1. Disconnect the primary CB from power 2. Disconnect the Ec2 from the EM2. If easy to undo, I would disconnect the EM2 from the EC2 - that = way it either shows that the source is or is not the EC2. If the problem goes away when the two are disconnected then I am = convinced its the sneak circuit of the Ec2 feeding the EM2. If the problem does not go away then the only thing I can think of = is a ground loop of some type - a bitch to try and deal with. and see the results of each on the problem. Ed Ed, most likely it is a ground loop. Sneak voltage could not be 6.5V. = It can not drive anything? Buly Quite possible, but don't discount the fact that the sneak circuit = could provide a resistance path that would knock your normal 12VDC down = to 6.5 Volts. Since A ground loop is sometimes such a hard problem, I = would disconnect the ec2 from the em2 -just to confirm it before = starting on that task. But, that's just my view {:>) Good Luck Ed ------=_NextPart_000_0009_01C5D0D2.F75D17B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 Bulent=20 Aliev
Sent: Friday, October 14, 2005 = 3:08=20 PM
Subject: [FlyRotary] Re: = injector size=20 stop. I had both injectors wired (as per schematic) to =3D20


On Oct 14, 2005, at 2:58 PM, Ed Anderson wrote:
 
----- Original = Message=20 -----
Sent:=20 Friday, October 14, 2005 2:45 PM
Subject:=20 [FlyRotary] Re: injector size stop. I had both injectors wired (as = per=20 schematic) to =3D20


On Oct 14, 2005, at 2:41 PM, Ed Anderson wrote:
 
----- Original = Message=20 -----
From: = Bulent=20 Aliev
Sent: Friday, = October 14,=20 2005 2:32 PM
Subject: = [FlyRotary] Re:=20 injector size stop. I had both injectors wired (as per = schematic) to=20 =3D20


I think = you were=20 wise to split your injectors power like that, I did not do = that and=20 in hind sight wish I had for the reason you=20 cited.
However, I = don't see=20 how adding a circuit breaker would do that.  Now, if = you are=20 leaving even 1 of the CB ON then the EC2 is receiving power = even=20 if the EC2 CB is pulled.  As long as either = the=20 primary or secondary injector has power on the line (either = of your=20 injector CB is pushed in) then the EC2 will get this=20 voltage.   Tracy used to have an LED on the = program button=20 of the EC2 and it would light up when the EC2 controller had = power -=20 that is another way I found out about the sneak = circuit.  If I=20 turned on an injector toggle the EC2 program button LED = would come=20 on even though its power switch/CB was=20 off.
 
So do you = get the=20 6.5volts when both injector CB are=20 pulled?
 
Ed
 

When I = turn on the=20 P.injector switch ON, the EM lights up and I get 6.5V Voltage = reading=20 and "Low Voltage" warning on the EM2 display.
Buly
 
  This happens even when the = injector=20 power  CB is pulled on the primary=20 injectors??
 
Ed

I can not disable my CB. But I can pull the connector = off?
Buly
 
Ok, so there is power to your primary = injector=20 switch since the CB is not pulled.  In that case, I suspect = that your=20 EM2 is sensing the "sneakcircuit" voltage from your EC2.  I = can think=20 of two things to try depending on how much trouble each is to = do
 
1. Disconnect the primary CB = from=20 power
2. Disconnect the Ec2 from the=20 EM2.
 
If easy to undo, I would disconnect = the EM2=20 from the EC2 - that way it either shows that the source = is or is=20 not the EC2.
 
If the problem goes away when the two = are=20 disconnected then I am convinced its the sneak circuit of the Ec2 = feeding=20 the EM2.
If the problem does not go away then = the only=20 thing I can think of is a ground loop of some type - a bitch to = try and=20 deal with.
 
 
 
and see the results of each on the=20 problem.
 
Ed

Ed, most likely it is a ground loop. Sneak voltage could not be = 6.5V. It=20 can not drive anything?
Buly
Quite possible, but don't = discount the fact=20 that the sneak circuit could provide a resistance path that would = knock=20 your normal 12VDC down to 6.5 Volts.  Since  A = ground loop=20 is sometimes such a hard problem, I would disconnect the ec2 from = the em2=20 -just to confirm it before starting on that task.  But, = that's just=20 my view {:>)
Good Luck
 
Ed
 


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