Return-Path: Received: from [65.173.216.66] (account ) by logan.com (CommuniGate Pro WebUser 4.0.1) with HTTP id 1870629 for ; Thu, 14 Nov 2002 10:46:19 -0500 From: "Marvin Kaye" Subject: Re: [LML] Re: Flying the Lancair LNC2, Gliding in a Brick with aConstant Speed Prop To: lml X-Mailer: CommuniGate Pro Web Mailer v.4.0.1 Date: Thu, 14 Nov 2002 10:46:19 -0500 Message-ID: In-Reply-To: <000601c28b9e$cce2bb60$6501a8c0@dslverizon.net> MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "Tom Gourley" : I'm certainly no expert on this subject, but I seem to recall an article that also said the prop driving the engine is not a good thing. I believe the explanation was that when this happens the pressure in the crankcase will be higher than the pressure in the combustion chambers of the cylinders -- something that does not happen under normal operation of an aircraft engine. (Car engines do this all the time but are designed for it.) If I'm remembering the article correctly, in some cases this has been known to induce ring flutter, which apparently is not good. As for de-tuning, I'm not sure what the A&P was referring to. Tom Gourley tom.gourley@verizon.net L2K #122 Banks, OR