X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-db01.mx.aol.com ([205.188.91.95] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with ESMTP id 5333453 for flyrotary@lancaironline.net; Sun, 01 Jan 2012 14:16:16 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.91.95; envelope-from=bktrub@aol.com Received: from mtaomg-mb02.r1000.mx.aol.com (mtaomg-mb02.r1000.mx.aol.com [172.29.41.73]) by imr-db01.mx.aol.com (8.14.1/8.14.1) with ESMTP id q01JFdDp018649 for ; Sun, 1 Jan 2012 14:15:39 -0500 Received: from core-due004b.r1000.mail.aol.com (core-due004.r1000.mail.aol.com [172.29.67.77]) by mtaomg-mb02.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id D1F3CE000085 for ; Sun, 1 Jan 2012 14:15:38 -0500 (EST) References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: sheilded plug wires In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bktrub@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CE96D0E19604CF_1E38_B9A17_webmail-m015.sysops.aol.com" X-Mailer: AOL Webmail 35138-STANDARD Received: from 50.46.146.205 by webmail-m015.sysops.aol.com (64.12.101.99) with HTTP (WebMailUI); Sun, 01 Jan 2012 14:15:38 -0500 Message-Id: <8CE96D0E1855B13-1E38-3CC38@webmail-m015.sysops.aol.com> X-Originating-IP: [50.46.146.205] Date: Sun, 1 Jan 2012 14:15:38 -0500 (EST) x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:493247744:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d29494f00b0da469b This is a multi-part message in MIME format. ----------MB_8CE96D0E19604CF_1E38_B9A17_webmail-m015.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" I got the misfiring issue cleared up back in August.The CAS wiring was reve= rsed- the CAS is polarity sensistive. The engine runs fine now.=20 Brian Trubee -----Original Message----- From: Ed Anderson To: Rotary motors in aircraft Sent: Sun, Jan 1, 2012 8:10 am Subject: [FlyRotary] Re: sheilded plug wires Brian, I've been flying with the Magnecor ignition wires for almost 10 year= s. They will make a set to your specified links and color plug covers (I u= se different colors for Lead and trail plugs) for a reasonable price (well,= it was around $50 ten years ago). =20 Ed =20 Edward L. Anderson Anderson Electronic Enterprises LLC 305 Reefton Road Weddington, NC 28104 http://www.andersonee.com http://www.eicommander.com From: bktrub@aol.com=20 Sent: Saturday, July 09, 2011 8:53 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: sheilded plug wires After reading the literature from magnecor, I think I'll just go with their= EMI suppressing leads, which I recieved in the mail yesterday. I just borr= owed a smaller prop so I can achieve the higher RPMs on the ground, now to = go ahead and start doing some testing on the ground. Everything else about = the plane seems satisfactory- it flies and handles well on the ground and i= n the air, the engine cools well, I just need to figure out this misfiring = thing before Igo up again. =20 =20 Brian Trubee =20 =20 -----Original Message----- From: Tracy To: Rotary motors in aircraft Sent: Sat, Jul 9, 2011 12:03 pm Subject: [FlyRotary] Re: sheilded plug wires I tried shielding solid wire ignition leads on my first engine back in 1994= . It caused the old 2nd gen coils to malfunction and miss badly for some r= eason. Didn't try it on other coils. The spiral wound wires are the way = to go IMO. Never had a problem with ignition or radio noise since using th= em. Tracy On Sat, Jul 9, 2011 at 12:56 PM, Kelly Troyer wrote: Brian Apparently the shield you are proposeing is not a good Idea..........The= reason why is noted in the "Magnacor" link in my previous post................ =20 Kelly Troyer "DYKE DELTA JD2" (Eventually) "13B ROTARY"_ Engine "RWS"_RD1C/EC2/EM2 "MISTRAL"_Backplate/Oil Manifold "TURBONETICS"_TO4E50 Turbo From: "bktrub@aol.com" =20 To: Rotary motors in aircraft Sent: Saturday, July 9, 2011 11:51 AM=20 Subject: [FlyRotary] Re: sheilded plug wires Ok, theory is nice, I prefer to just think it is all magic. My apologies, = but I am the product of our public school system : ) =20 What I'd like to know is this- am I fabricating the wires correctly? I cut = the insulation about 1/2 inch back from the inner conductor, and then crimp= the terminal so that the conductor is folded back against the wire under t= he terminal crimp. There is no outer braid or anything which actually grounds against the engi= ne. I am thinking of putting an outer braid around the wires and then groun= ding that on one end.=20 =20 Brian Trubee -----Original Message----- From: Charlie England To: Rotary motors in aircraft Sent: Sat, Jul 9, 2011 9:11 am Subject: [FlyRotary] Re: sheilded plug wires To expand on that for the electron-challenged, an inductor is effectively a= frequency dependent resistor. The higher the frequency, the higher the res= istance. So, the fundamental pulse to the plug makes it through (though slo= wed slightly), while the harmonics (noise) that were generated can't get p= ast the extra resistance presented to them. The reverse is true for a capacitor. That's one of the reasons why you see = capacitors with one leg tied to the power supply & the other to ground. The= capacitor blocks DC but passes higher frequencies (the noise) to ground. I have no doubt that the above will make physicists cringe, but it's close = enough to working knowledge for us builders to use. Charlie On 07/09/2011 08:28 AM, Tracy wrote:=20 In this case "shielded" is the wrong term. The spiral wire does not actua= lly shield the noise, it prevents the noise from being transmitted. It a= cts as an inductor to prevent the propagation of the noise generated at the= spark gap from propagating up the wire. Tracy Sent from my iPad On Jul 9, 2011, at 2:09 AM, Lehanover@aol.com wrote: It has to do with the resistance of the long thin Monel wire. An impedance = mismatch and inductive reactance. What the mechanism is I do not know. That= is why Tracy is here, to explain such matters. =20 Lynn E. Hanover =20 In a message dated 7/8/2011 11:08:09 P.M. Paraguay Standard Time, SBoese@uw= yo.edu writes: My last massage got a little garbled, the way I have my wires configured no= w, the conductor and spiral wrap are exposed and folded under the crimped t= eminal ends, so aren't both the conductor and the spiral wrap acting as a c= onductor? What is doing the shielding? =20 Brian Trubee ----------MB_8CE96D0E19604CF_1E38_B9A17_webmail-m015.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii"
I got the misfiring issue cleared up back in August.The CAS wiring was= reversed- the CAS is polarity sensistive. The engine runs fine now.
 
Brian Trubee


= -----Original Message-----
From: Ed Anderson <eanderson@carolina.rr.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sun, Jan 1, 2012 8:10 am
Subject: [FlyRotary] Re: sheilded plug wires

Brian, I've been flying with the Magnecor ignition = wires for almost 10 years.  They will make a set to your specified lin= ks and color plug covers (I use different colors for Lead and trail plugs) = for a reasonable price (well, it was around $50 ten years ago).
 
Ed
 
Edward L. Anderson
Anderson Electronic Enterprises LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersone= e.com
http://www.eicomman= der.com

Sent: Saturday, July 09, 2011 8:53 PM
Subject: [FlyRotary] Re: sheilded plug wires

After reading the literature from magnecor, I think I'll just go with = their EMI suppressing leads, which I recieved in the mail yesterday. I just= borrowed a smaller prop so I can achieve the higher RPMs on the ground, no= w to go ahead and start doing some testing on the ground. Everything else a= bout the plane seems satisfactory- it flies and handles well on the ground = and in the air, the engine cools well, I just need to figure out this misfi= ring thing before Igo up again.
 
 
Brian Trubee
 


 


= -----Original Message-----
From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sat, Jul 9, 2011 12:03 pm
Subject: [FlyRotary] Re: sheilded plug wires

I tried shieldi= ng solid wire ignition leads on my first engine back in 1994.  It caus= ed the old 2nd gen coils to malfunction and miss badly for some reason.&nbs= p;  Didn't try it on other coils.  The spiral wound wires are the= way to go IMO.  Never had a problem with ignition or radio noise sinc= e using them.

Tracy


On Sat, Jul 9, 2011 at 12:56 PM, Kelly Troyer <keltro@att.net> wrote:
Brian
   Apparently the shield you are proposeing is not a g= ood Idea..........The reason why is noted in the
"Magnacor" link in my previous post.............= ...
 
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: "bktrub@aol.com" <bkt= rub@aol.com>=20

To: Rotary motors in aircra= ft <flyrotary@lancaironli= ne.net>
Sent: Saturday, July 9, 201= 1 11:51 AM=20

Subject: [FlyRotary] Re: sh= eilded plug wires

Ok,  theory is nice, = I prefer to just think it is all magic. My apologies, but I am th= e product of our public school system : )
 
What I'd like to know is t= his- am I fabricating the wires correctly? I cut the insulation about = 1/2 inch back from the inner conductor, and then crimp the terminal so that= the conductor is folded back against the wire under the terminal crimp.
There is no outer braid or anything which actually grounds against the= engine. I am thinking of putting an outer braid around the wires and then = grounding that on one end.
 
Brian Trubee



= -----Original Message-----
From: Charlie England <ceengl= and@bellsouth.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sat, Jul 9, 2011 9:11 am
Subject: [FlyRotary] Re: sheilded plug wires

To expand on that for the electron-challenged, an inductor is effectiv= ely a frequency dependent resistor. The higher the frequency, the higher th= e resistance. So, the fundamental pulse to the plug makes it through (thoug= h slowed slightly), while the harmonics (noise) that were generated  c= an't get past the extra resistance presented to them.

The reverse is true for a capacitor. That's one of the reasons why you see = capacitors with one leg tied to the power supply & the other to ground.= The capacitor blocks DC but passes higher frequencies (the noise) to groun= d.

I have no doubt that the above will make physicists cringe, but it's close = enough to working knowledge for us builders to use.

Charlie

On 07/09/2011 08:28 AM, Tracy wrote:=20
In this case "shielded" is the wrong term.   The spiral wire does= not actually shield the noise, it prevents the noise from being transmitte= d.    It acts as an inductor to prevent the propagation of the no= ise generated at the spark gap from propagating up the wire.

Tracy

Sent from my iPad

On Jul 9, 2011, at 2:09 AM, Lehanover@aol.com wrote:

It has to do with the resistance of the long thin Monel wire. An imped= ance mismatch and inductive reactance. What the mechanism is I do not know.= That is why Tracy is here, to explain such matters.
 
Lynn E. Hanover
 
In a message dated 7/8/2011 11:08:09 P.M. Paraguay Standard Time, SBoese@uwyo.edu writes:
My last massage got a little garbled, the way I have my wires configur= ed now, the conductor and spiral wrap are exposed and folded under the crim= ped teminal ends, so aren't both the conductor and the spiral wrap acting a= s a conductor? What is doing the shielding?
 
Brian Trubee




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