X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] Return-Path: Received: from ms-smtp-02.southeast.rr.com ([24.25.9.101] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2048060 for flyrotary@lancaironline.net; Wed, 16 May 2007 14:55:22 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-02.southeast.rr.com (8.13.6/8.13.6) with SMTP id l4GIsF3e012290 for ; Wed, 16 May 2007 14:54:16 -0400 (EDT) Message-ID: <005e01c797eb$d673cad0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Problem found and fixed. Date: Wed, 16 May 2007 14:55:56 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005B_01C797CA.4F02CCC0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_005B_01C797CA.4F02CCC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Bobby, Unfortunately, both of my coils are powered from the same CB. There is = no question in my mind now (if there was before {:>)) that was not a = good design decision. The smart thing is to power each ignition module = through its own CB and power line. I have the fuel pumps that way, = don't know why I didn't think to do the ignition the same way. Ed ----- Original Message -----=20 From: Bobby J. Hughes=20 To: Rotary motors in aircraft=20 Sent: Wednesday, May 16, 2007 3:06 PM Subject: [FlyRotary] Re: Problem found and fixed. Ed, Are you using one power lead for all coils or powering L /T = separately? Bobby -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Ed Anderson Sent: Wednesday, May 16, 2007 11:11 AM To: Rotary motors in aircraft Subject: [FlyRotary] Problem found and fixed. After my uneventful 1600 mile detour through Louisiana after Sun & = Fun, I went out several days later and could not start the engine. = Didn't have time to trouble shoot it then, but I did today. The simulation modes were a great help. If put the EC2 in mode 1 = (fuel pumps off) and pushed the store button - the injectors clicked = like mad. I detached one sparkplug wire , placed a screw driver in it = and laid it on the motor mount. I put the EC2 in mode 8 (ignition) and = pressed the store button - nothing, nada, not a spark. So I started from the circuit breaker, confirmed I had voltage on each = side. Next was a Molex circular plug which connects the instrument = panel wiring to the airframe, I have 6 of them. I pulled the one = which had the power line to the ignition coils and noticed that the = power pin did not look bright and shiny as did the others. I sprayed = some Corrosion X on it and stuck it back on - the engine fired right up. However, during the running it died at low rpm, so I pulled the plug = back off an got out my near vision glasses and noticed that not only did = it not look shiny but it looked slightly pitted and corroded. So I got = out some fine sand paper and clean the pin and took a small fine tooth = file and gentle "reamed" the socket. Put it back together and that = apparently did the job. I wiggled the plug quite a bit while the engine = was running and no further disruption of the ignition. Lesson Learned? Well, way back when I was doing my wiring (hard to = believe over a decade ago), I was faced with a choice of pins - tin or = gold plated. Well, need I say which one I went with - the tin ones, = they were cheaper naturally. Later on I decided to use gold plated = pins/sockets for the critical circuits (of which this is one), but never = went back and changed this one (after all I did want to fly in my life = time). =20 Perhaps Bob White can chime in here, my recommendation would be to go = with the gold plated pins vice the tin plated on for critical systems = especially where they might be exposed to weather (like the tip up = canopy can do). =20 Anyhow, back in running shape - I did pull all the remaining plugs and = squirted some Xrossions on the pins. None of the others had the = dark/pitted look to them. Those simulations modes are really an asset in trouble shooting. = Thought I would pass this on. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.dmack.net/mazda/index.html ------=_NextPart_000_005B_01C797CA.4F02CCC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Bobby,
 
Unfortunately, both of my coils are powered from = the same=20 CB.  There is no question in my mind now (if there was before = {:>)) that=20 was not a good design decision.  The smart thing is to power each = ignition=20 module through its own CB and power line.  I have the fuel pumps = that way,=20 don't know why I didn't think to do the ignition the same = way.
 
Ed
----- Original Message -----
From:=20 Bobby J. = Hughes=20
Sent: Wednesday, May 16, 2007 = 3:06=20 PM
Subject: [FlyRotary] Re: = Problem found=20 and fixed.

Ed,
 
Are you using one power lead for all coils or = powering L=20 /T separately?
 
Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of Ed=20 Anderson
Sent: Wednesday, May 16, 2007 11:11 = AM
To: Rotary=20 motors in aircraft
Subject: [FlyRotary] Problem found and=20 fixed.

After my  uneventful 1600 mile detour = through=20 Louisiana after Sun & Fun, I went out several days later and could = not=20 start the engine.  Didn't have time to trouble shoot it then, but = I did=20 today.
 
The simulation modes were a great = help.  If=20 put the EC2 in mode 1 (fuel pumps off) and pushed the store button - = the=20 injectors clicked like mad.  I detached one sparkplug wire , = placed a=20 screw driver in it and laid it on the motor mount.  I put the EC2 = in mode=20 8 (ignition) and pressed the store button - nothing, nada, not a=20 spark.
 
So I started from the circuit breaker, = confirmed I had=20 voltage on each side.  Next was a Molex circular plug which = connects the=20 instrument panel wiring to the airframe, I have  6 of = them.   I=20 pulled the one which had the power line to the ignition coils and = noticed that=20 the power pin did not look bright and shiny as did the=20 others.   I sprayed some Corrosion X on it and stuck it back = on -=20 the engine fired right up.
 
However, during the running it died  at = low rpm, so=20 I pulled the plug back off an got out my near vision glasses and = noticed that=20 not only did it not look shiny but it looked slightly pitted and=20 corroded.  So I got out some fine sand paper and clean the pin = and took a=20 small fine tooth file and gentle "reamed" the socket.  Put it = back=20 together and that apparently did the job.  I wiggled the plug = quite a bit=20 while the engine was running and no further disruption of the=20 ignition.
 
Lesson Learned? Well, way back when I was = doing my=20 wiring (hard to believe over a decade ago), I was faced with a choice = of pins=20 - tin or gold plated.  Well, need I say which one I went with - = the tin=20 ones, they were cheaper naturally.  Later on I decided to use = gold plated=20 pins/sockets for the critical circuits (of which this is one), but = never went=20 back and changed this one (after all I did want to fly in my life=20 time).  
 
Perhaps Bob White can chime in here, my = recommendation=20 would be to go with the gold plated pins vice the tin plated on for = critical=20 systems especially where they might be exposed to weather (like the = tip up=20 canopy can do).   
 
Anyhow, back in running shape - I did pull all = the=20 remaining plugs and squirted some Xrossions on the pins.  None of = the=20 others had the dark/pitted look to them.
 
Those simulations modes are really an asset in = trouble=20 shooting.  Thought I would pass this on.
 
Ed
Ed Anderson
Rv-6A N494BW Rotary = Powered
Matthews,=20 NC
eanderson@carolina.rr.comhttp:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.dmack.net/mazda= /index.html
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