X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 04 Jan 2008 19:55:40 -0500 Message-ID: X-Original-Return-Path: Received: from web54406.mail.yahoo.com ([206.190.49.136] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with SMTP id 2630828 for lml@lancaironline.net; Fri, 04 Jan 2008 10:44:28 -0500 Received-SPF: none receiver=logan.com; client-ip=206.190.49.136; envelope-from=randylsnarr@yahoo.com Received: (qmail 65069 invoked by uid 60001); 4 Jan 2008 15:43:49 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=V8RJ67cdfMwfbZGMpA88Tn7HL0GqBGXWf0XphRaAoiOqv9lwBIweyOrkG+UjqWFO7kuL0g3qdIx5LotkVeJ8LeaWT9P+bZSFwyhZrAOxFqcle2ZXMR/hN+vgFDGPEqwC6PQvYCiN0TNFTCMGTAvzDvq/06L3OqCmXQsakuzQmT8=; X-YMail-OSG: r9OQz4MVM1nMvEiN.126EvrfdiAywMg6tNTvxqNfVhB2HlX7J897yejRldJnUA_ydKGzVjg79kQJk6gv81pzIOPWzw-- Received: from [208.187.197.66] by web54406.mail.yahoo.com via HTTP; Fri, 04 Jan 2008 07:43:49 PST X-Original-Date: Fri, 4 Jan 2008 07:43:49 -0800 (PST) From: randy snarr Subject: Re: [LML] Re: One mag, One electronic ignition X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1351177590-1199461429=:64252" Content-Transfer-Encoding: 8bit X-Original-Message-ID: <456524.64252.qm@web54406.mail.yahoo.com> --0-1351177590-1199461429=:64252 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Mark me down in the one mag one one EI working perfectly column. 200 Hrs without a even a hint of an issue. Is this one of those light bulb threads??? Randy Snarr 235/320 N694RS Chuck Jensen wrote: Steve, The concern is appreciated but the dozens upon dozens of EI one side and Mag on the other installations that have flown for thousands of hours without problem should lay your concern to rest. Whatever the dynamics, they do not seem to cause a problem with shortening mag life. Chuck Jensen -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of Steve Colwell Sent: Thursday, January 03, 2008 1:18 PM To: lml@lancaironline.net Subject: [LML] One mag, One electronic ignition I have not done any tests but I believe if One Mag and One Electronic Ignition is used you are likely to fail the Mag Coil prematurely (that would reduce the aprox. 400 to 600 hour normal failure of a new Slick to a really unacceptable life). Why?? One of the principal advantages of EI is the variable timing advance that improves power and efficiency. When the EI fires a plug before the Mag, the pressure rise from earlier combustion may prevent the Mag plug from firing. Maybe (probably?) preventing the Mag plug from firing at least at higher altitudes where advance is the greatest. I base my theory on the old Champion Spark Plug Testers that used an air hose to increase pressure while firing a plug to check its ability to continue to fire. What do others say? Steve Colwell >Gary said.... >On the other question about dual electronic ignitions: >I was thinking about building mine with a dual electronic ignition and the >power source that I finally came up with (before I abandoned the idea in >favor of using one mag) -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html --------------------------------- Never miss a thing. Make Yahoo your homepage. --0-1351177590-1199461429=:64252 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit

Mark me down in the one mag one one EI working perfectly column.

200 Hrs without a even a hint of an issue.

Is this one of those light bulb threads???

Randy Snarr

235/320 N694RS

Chuck Jensen <cjensen@dts9000.com> wrote:

Steve,

The concern is appreciated but the dozens upon dozens of EI one side and Mag on the other installations that have flown for thousands of hours without problem should lay your concern to rest. Whatever the dynamics, they do not seem to cause a problem with shortening mag life.

Chuck Jensen

-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of
Steve Colwell
Sent: Thursday, January 03, 2008 1:18 PM
To: lml@lancaironline.net
Subject: [LML] One mag, One electronic ignition

I have not done any tests but I believe if One Mag and One Electronic
Ignition is used you are likely to fail the Mag Coil prematurely (that would
reduce the aprox. 400 to 600 hour normal failure of a new Slick to a really
unacceptable life). Why?? One of the principal advantages of EI is the
variable timing advance that improves power and efficiency. When the EI
fires a plug before the Mag, the pressure rise from earlier combustion may
prevent the Mag plug from firing. Maybe (probably?) preventing the Mag plug
from firing at least at higher altitudes where advance is the greatest. I
base my theory on the old Champion Spark Plug Testers that used an air hose
to increase pressure while firing a plug to check its ability to continue to
fire. What do others say?

Steve Colwell

>Gary said....
>On the other question about dual electronic ignitions:
>I was thinking about building mine with a dual electronic ignition and
the
>power source that I finally came up with (before I abandoned the idea in
>favor of using one mag)

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