X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-05.southeast.rr.com ([24.25.9.104] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2096784 for flyrotary@lancaironline.net; Mon, 11 Jun 2007 14:15:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.104; 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-05.southeast.rr.com (8.13.6/8.13.6) with SMTP id l5BIE5aK026613 for ; Mon, 11 Jun 2007 14:14:06 -0400 (EDT) Message-ID: <001101c7ac54$f522d700$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: MSD type Ignition CD or not? was Re: Spark Plug Cleaning Date: Mon, 11 Jun 2007 14:18:48 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000E_01C7AC33.6DA38110" 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_000E_01C7AC33.6DA38110 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ok, thanks, Bob Ed ----- Original Message -----=20 From: bmears9413@aol.com=20 To: Rotary motors in aircraft=20 Sent: Monday, June 11, 2007 1:48 PM Subject: [FlyRotary] Re: MSD type Ignition CD or not? was Re: Spark = Plug Cleaning Im almost certain it was Ed. Bob Mears Supermarine Spitfire -----Original Message----- From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Mon, 11 Jun 2007 9:01 am Subject: [FlyRotary] MSD type Ignition CD or not? was Re: Spark Plug = Cleaning 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. = 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_000E_01C7AC33.6DA38110 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Ok, thanks, Bob
 
Ed
----- Original Message -----
From:=20 bmears9413@aol.com
Sent: Monday, June 11, 2007 = 1:48 PM
Subject: [FlyRotary] Re: MSD = type=20 Ignition CD or not? was Re: Spark Plug Cleaning

Im almost certain it was Ed.
 
Bob Mears
Supermarine Spitfire


-----Original = Message-----
From: Ed=20 Anderson
To: Rotary motors in aircraft=20
Sent: Mon, 11 Jun 2007 9:01 = am
Subject:=20 [FlyRotary] MSD type Ignition CD or not? was Re: Spark Plug=20 Cleaning

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=20 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=20 type driven coils being so fast as not to permit much voltage =  leakage=20 via the lead deposits and thereby avoiding SAG seemed to make sense to = me. 
 
So the question to Bob Mears is do you recall = whether=20 the MSD system being used was a Capacitive Discharge type? =20 Thanks!
 
Ed
----- Original Message -----
From:=20 bmears9413@aol.com
To: Rotary motors in = aircraft=20
Sent: Monday, June 11, 2007 = 8:56=20 AM
Subject: [FlyRotary] Re: = Spark Plug=20 Cleaning

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

Bob=20 Mears
Supermarine spitfire


 
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