Return-Path: Received: from [65.33.163.227] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 4.3c2) with HTTP id 792024 for lml@lancaironline.net; Sun, 13 Mar 2005 23:26:16 -0500 From: "Marvin Kaye" Subject: Re: [LML] Re: Walter - Target EGT query To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.3c2 Date: Sun, 13 Mar 2005 23:26:16 -0500 Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "George Braly" : In a normally aspirated engine, at 15,000 feet… there is no such thing as “aggressive leaning” - - - just changes in mixture. """ Flying at 15000' going east, WOT, 2400 RPM, 14.5-15.5 GPH, 220 to 230 kts ground speed with 30 kt tailwind; EGT @ 1260, CHT @330. Fuel computer says 900 nm of gas left, 1000 nm to go, takes about 1hr to land, fuel, and get back up in the air. To make the trip without landing, lower RPM to 2100, begin aggressive leaning, engine sputters @ 9 GPH, enrich to 10 GPH, EGT's go up to 1300, CHT's to 350, GS ~ 190-195 kts with same tailwind. Now fuel computer says 1200 nm left, 1000 to go, have fuel margin and do not have to land. Am I hurting my engine with the aggressive leaning?? """