Return-Path: Received: from [129.116.87.171] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 621578 for flyrotary@lancaironline.net; Tue, 25 Jan 2005 13:50:02 -0500 Received-SPF: none receiver=logan.com; client-ip=129.116.87.171; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: RE: [FlyRotary] Re: FW: Re: Plugs and Mags Date: Tue, 25 Jan 2005 12:49:31 -0600 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69EC07E87@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: FW: Re: Plugs and Mags Thread-Index: AcUDCKA3EAOjXmvtTUK2823cJzV05AABdpLQ From: "Mark R Steitle" To: "Rotary motors in aircraft" Yeah, I can hardly wait. ;-( Mark S. -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Tuesday, January 25, 2005 12:08 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: FW: Re: Plugs and Mags No, I'm not certain, Mark, However, the plugs are not necessary worn out at 20-30 or 100 hours on MoGas but they must have the center ceramic cleaned of lead or carbon deposits. Not arguing that platinum and Iridium plugs won't give longer life - just don't believe they will go significant longer before the SAG hits. Those that have not yet hit the SAG have a thrill awaiting. The first time your engine drops in rpm and the EGT drops 300F, you'll likely think some major problem has occurred. For months I though I had erratic fuel injectors or some intermittent fuel problem. Tracy is the one that put me onto the plugs - change to new plugs and the problem ends immediately. Generally backing off on the power seems to help temporarily and the condition will go away on its on (after getting your heart beat accelerated) to recur at ever increasingly frequent intervals. Seems to happened mostly at high power settings - like on takeoff where you really don't want anything unusual from the engine. Even though I have had it happen a number of times, I still have not gotten use to it {:>) Ed A ----- Original Message ----- From: "Mark R Steitle" To: "Rotary motors in aircraft" Sent: Tuesday, January 25, 2005 12:35 PM Subject: [FlyRotary] Re: FW: Re: Plugs and Mags Ed, Do you know what type of plugs Tracy uses, el-cheapo or platinum? You said that he runs mo-gas so I assume he doesn't have the lead-fouling problem you and others have. So, I assume Tracy's plugs are actually worn out after 100 hours? If that's the case, it seems that the platinum, or iridium plugs might give longer life. Mark S. -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of WRJJRS@aol.com Sent: Tuesday, January 25, 2005 11:28 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: FW: Re: Plugs and Mags Not certain that reciprocating engines have the same problems as their plugs are not as shrouded as ours so combustion process probably help keeps blowing off deposits on the ceramic center cone. FWIW Ed A >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html