Return-Path: Received: from [65.33.164.170] (account ) by logan.com (CommuniGate Pro WebUser 4.1.1) with HTTP id 2530028 for lml@lancaironline.net; Fri, 15 Aug 2003 23:40:36 -0400 From: "Marvin Kaye" Subject: Re: [LML] tailplane angle of incidence To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.1.1 Date: Fri, 15 Aug 2003 23:40:36 -0400 Message-ID: In-Reply-To: <004b01c363a6$0e2da820$6601a8c0@cp172883-b.arlngt01.va.comcast.net> MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "Bob Pastusek" : Gary, You can make a case for adjusting the tailplane angle of incidence to correct your problem, but there are a number of fairly important considerations. Perhaps the most important is the low speed handling and stall response. Changing the tailplane incidence directly affects this, so it would be wise to consult the designer or a knowledgeable aero engineer if you don't have this background. Before making any permanent changes, even to include modifying the trim tab, you might want to check the cruise, TO and landing (with and w/o flaps) handling and "feel" at forward and aft CGs, and expected/max operating weights before making permanent mods. You might be able to adjust your trim tab linkage to give more travel in the deficient direction to ease stick forces while you're going through these. As with other things you've likely discovered during building, it's easy to create a new problem while solving the current one. Good Luck! Bob Pastusek