X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 04 May 2008 00:13:24 -0400 Message-ID: X-Original-Return-Path: Received: from mail03.syd.optusnet.com.au ([211.29.132.184] verified) by logan.com (CommuniGate Pro SMTP 5.2.2) with ESMTPS id 2890337 for lml@lancaironline.net; Fri, 02 May 2008 10:41:45 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.184; envelope-from=fredmoreno@optusnet.com.au Received: from fred ([202.139.5.198]) (authenticated sender fredmoreno) by mail03.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id m42Eeefx024816 for ; Sat, 3 May 2008 00:40:50 +1000 From: "Fred Moreno" X-Original-To: "Lancair Mail" Subject: FW: [LML] Re: Lightspeed Plasma III in Performance Engine X-Original-Date: Fri, 2 May 2008 22:40:35 +0800 X-Original-Message-ID: <000001c8ac62$85236140$c6058bca@fred> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C8ACA5.9346A140" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 Importance: Normal Thread-Index: AcisWi2ljploJd+YSliutIUkXfAnDgAB4S4g X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C8ACA5.9346A140 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 Scott wrote: "Are the Mag plugs top, bottom or mixed? During the break = in phase, some engines will actually be, uh, letting more oil into the combustion chamber. At shut down this tends to accumulate at the bottom = of the cylinder where some plugs are located and may have a tendency to = more easily become fouled and even more so on the side where one wing is low = when parked." =20 I think you are on to something here, Grayhawk. The Lightspeed fires = the top (and presumably cleaner) plugs while the mag fires the (presumably dirtier) bottom plugs, so I may be attributing too much to the = electronic ignition. For reference, the engine has burned 3 quarts of oil in 10 = hours since new and seems to be stabilizing on very low oil burn, less than I could detect in two hours of flying.=20 =20 Fred ------=_NextPart_000_0001_01C8ACA5.9346A140 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

Scott wrote: “Are the Mag = plugs top, bottom or mixed?  During the break in phase, some engines will actually be, uh, letting more oil into the combustion = chamber.  At shut down this tends to accumulate at the bottom of the cylinder where = some plugs are located and may have a tendency to more easily become fouled = and even more so on the side where one wing is low when = parked.”

 

I think you are on to something = here, Grayhawk.  The Lightspeed fires the top (and presumably cleaner) plugs while the = mag fires the (presumably dirtier) bottom plugs, so I may be attributing too much = to the electronic ignition.  For reference, the engine has burned 3 quarts = of oil in 10 hours since new and seems to be stabilizing on very low oil burn, = less than I could detect in two hours of flying.

 

Fred

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