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 2096462 for flyrotary@lancaironline.net; Mon, 11 Jun 2007 11:35:49 -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 l5BFYZQ4024880 for ; Mon, 11 Jun 2007 11:34:35 -0400 (EDT) Message-ID: <000b01c7ac3e$b35e9ae0$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 11:39:29 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit 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 Ok, Bob, I thought perhaps different MSD systems for different automobiles, seems I used to recall they had a series for regular automobiles that didn't use Capacitor Discharge, but my memory being what it isn't. Thanks Ed ----- Original Message ----- From: "Bob White" To: "Rotary motors in aircraft" Sent: Monday, June 11, 2007 10:27 AM Subject: [FlyRotary] Re: MSD type Ignition CD or not? was Re: Spark Plug Cleaning > Hi Ed, > > All of the regular MSD systems are CD's. I sort of wonder if the > Blaster coils are or not, and if they are do they have the same energy > levels of the other MSD systems. I think I've seen that the multiple > spark feature goes away at higher RPM's because of time constraints. > > Bob W. > > > On Mon, 11 Jun 2007 10:01:01 -0400 > "Ed Anderson" wrote: > >> 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. >> >> 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 ----- >> From: bmears9413@aol.com >> To: Rotary motors in aircraft >> 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 >> >> >> >> > > > -- > N93BD - Rotary Powered BD-4 - http://www.bob-white.com > 3.8 Hours Total Time and holding > Cables for your rotary installation - http://www.roblinphoto.com/shop/ > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html