X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-02.southeast.rr.com ([24.25.9.101] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2096251 for flyrotary@lancaironline.net; Mon, 11 Jun 2007 09:57:17 -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 l5BDuSJm013805 for ; Mon, 11 Jun 2007 09:56:29 -0400 (EDT) Message-ID: <001b01c7ac30$f1d58b20$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: MSD type Ignition CD or not? was Re: Spark Plug Cleaning Date: Mon, 11 Jun 2007 10:01:01 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0018_01C7AC0F.6A752EE0" 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_0018_01C7AC0F.6A752EE0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Given the interest in getting rid of SAG - its important that we are all = on the same wavelength when discussing components. For example, there = are a whole bunch of different MSD ignition systems out there - I'm not = certain that they are all Capacitive Discharge types. It may made a = difference regarding their ability to avoid/delay on set of SAG. =20 At least Lynn's assessment about the rise time of the CD type driven = coils being so fast as not to permit much voltage leakage via the lead = deposits and thereby avoiding SAG seemed to make sense to me. =20 So the question to Bob Mears is do you recall whether the MSD system = being used was a Capacitive Discharge type? Thanks! Ed ----- Original Message -----=20 From: bmears9413@aol.com=20 To: Rotary motors in aircraft=20 Sent: Monday, June 11, 2007 8:56 AM Subject: [FlyRotary] Re: Spark Plug Cleaning SAG can appear any where apparently. We ran a MSD system on our race = care and still ran into the problem. The problem ended when we switched = to alcohol, but thats not a fix for airplanes! Bob Mears Supermarine spitfire ------=_NextPart_000_0018_01C7AC0F.6A752EE0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Given the interest in getting rid of SAG - its = important=20 that we are all on the same wavelength when discussing components.  = For=20 example, there are a whole bunch of different MSD ignition systems out = there -=20 I'm not certain that they are all Capacitive Discharge types.  It = may made=20 a difference regarding their ability to avoid/delay on set of SAG.  =
 
At least Lynn's assessment about the rise time = of the CD=20 type driven coils being so fast as not to permit much voltage =  leakage via=20 the lead deposits and thereby avoiding SAG seemed to make sense to = me. =20
 
So the question to Bob Mears is do you recall = whether the=20 MSD system being used was a Capacitive Discharge type? =20 Thanks!
 
Ed
----- Original Message -----
From:=20 bmears9413@aol.com
Sent: Monday, June 11, 2007 = 8:56 AM
Subject: [FlyRotary] Re: Spark = Plug=20 Cleaning

SAG can appear any where apparently. We ran=20 a MSD system on our race care and still ran into = the=20 problem. The problem ended when we switched to alcohol, but=20 thats not a fix for airplanes!

Bob=20 Mears
Supermarine spitfire


 
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