Return-Path: Received: from [24.25.9.102] (HELO ms-smtp-03-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3051361 for flyrotary@lancaironline.net; Sun, 29 Feb 2004 16:34:17 -0500 Received: from edward (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i1TLYAs2004949 for ; Sun, 29 Feb 2004 16:34:11 -0500 (EST) Message-ID: <000a01c3ff0b$c9a1e7a0$2402a8c0@edward> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Injectors on? Was 13B - No start problem Date: Sun, 29 Feb 2004 16:34:18 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C3FEE1.E092A730" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C3FEE1.E092A730 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable David, I agree that you plan would work, however, I must admit I am = still concerned that your injectors are open with power to them. Should = not be. Injectors should only be on when triggered by the EC2 during = engine running (or cranking more than 150 rpm). I would recommend = getting to the bottom of that at some point before flying. Believe me = every little hiccup or hesitation of the engine (real or imagined) = really gets your attention as the thousand and one things you told = yourself you "should have done" flash past your minds eye {:>) Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: David Leonard=20 To: Rotary motors in aircraft=20 Sent: Sunday, February 29, 2004 1:48 PM Subject: [FlyRotary] Re: Injectors on? Was 13B - No start problem Thanks Ed, I do have fuese to the injectors, one for the lead and one = for the trail. The fuse box is in the engine compartment. It would not = be the end of the world to wire it into the panel and install a swithch, = but I feel I have a workable solution. For testing it is easy enough to = pull the fuse to one or other of the injectors. To turn off the engine = I will still just turn off the key - which controls the EC2 main power = and the fuel pump. If I need to turn the engine off sooner I will have = to turn off the main battery buss. I see the advantage of using fuel = cut out to turn off the engine as keeping the fuel out of the engine to = help prevent rusting of the apex seals. Just like in a lycoming when = you go to full lean to stop the engine. Will let you know what happens when I try to 'make noise'. speaking = of which.. It off the airport J David Leonard The Rotary Roster: http://members.aol.com/_ht_a/rotaryroster/index.html You are correct, David. With power to injectors via a separate = connection to the battery bus (which I also have) the way I stop the = engine is by turning off the fuel injector enable switches which kills = power to the injectors but not the EC2. That is how I found out about = the "sneak" circuit. I turned off the switch that is dedicated to = providing power to the EC2 module which should have kill the engine but = the engine continued to run!!. The other option is to kill all power = to the system through a master switch. In my case, my EC2 and injectors = are wired to the battery bus through switches. So turning off the = master switch will not stop my engine. I either turn off power to = injectors via the injector disable switches or pull the circuit breaker = between the battery and battery bus. It would seem that at your stage, the simplest thing might be to put = a switch in the circuit with your injector fuse (I think you said you = had one) to kill power to the injectors. That way you can ensure no = power is getting to them. Actually, its not a bad set up, you can play = with your EC2 and ignition while assured the injectors will not inject = fuel and start the engine. Ed ------=_NextPart_000_0007_01C3FEE1.E092A730 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
David, I agree that you plan would = work, however, I=20 must admit I am still concerned that your injectors are open with power = to=20 them.  Should not be.  Injectors should only be on when = triggered by=20 the EC2 during engine running (or cranking more than 150 rpm).  I = would=20 recommend getting to the bottom of that at some point before = flying. =20 Believe me every little hiccup or hesitation of the engine (real or = imagined)=20 really gets your attention as the thousand and one things you told = yourself you=20 "should have done" flash past your minds eye {:>)
 
Ed
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 David=20 Leonard
Sent: Sunday, February 29, 2004 = 1:48=20 PM
Subject: [FlyRotary] Re: = Injectors on?=20 Was 13B - No start problem

Thanks = Ed,  I do=20 have fuese to the injectors, one for the lead and one for the = trail.  The=20 fuse box is in the engine compartment.  It would not be the end = of the=20 world to wire it into the panel and install a swithch, but I feel I = have a=20 workable solution.  For testing it is easy enough to pull the = fuse to one=20 or other of the injectors.  To turn off the engine I will still = just turn=20 off the key =96 which controls the EC2 main power and the fuel = pump.  If I=20 need to turn the engine off sooner I will have to turn off the main = battery=20 buss.  I see the advantage of using fuel cut out to turn off the = engine=20 as keeping the fuel out of the engine to help prevent rusting of the = apex=20 seals.  Just like in a lycoming when you go to full lean to stop = the=20 engine.

 

Will let = you know=20 what happens when I try to =91make noise=92=85  speaking of = which=85.  It=20 off the airport  J

 

David=20 Leonard

The Rotary=20 Roster:

http://memb= ers.aol.com/_ht_a/rotaryroster/index.html

You are = correct,=20 David.  With power to injectors via a separate connection to = the=20 battery bus (which I also have)  the way I  stop the = engine=20 is by turning off the fuel injector enable switches which kills = power to the=20 injectors but not the EC2.  That is how I found out about the = "sneak"=20 circuit.  I turned off the switch that is dedicated to = providing power=20 to the EC2 module which should have kill the engine but the engine = continued=20 to run!!.   The other option is to kill all power to the = system=20 through a master switch.  In my case, my EC2 and injectors are = wired to=20 the battery bus through switches.  So turning off the master = switch=20 will not stop my engine.  I either turn off power to injectors = via the=20 injector disable switches or pull the circuit breaker between the = battery=20 and battery bus.

 

It would = seem that=20 at your stage, the simplest thing might be to put a switch in the = circuit=20 with your injector fuse (I think you said you had one) to kill power = to the=20 injectors.  That way you can ensure no power is getting to = them. =20 Actually, its not a bad set up, you can play with your EC2 and = ignition=20 while assured the injectors will not inject fuel and start the=20 engine.

 

Ed

 

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