Return-Path: Received: from [67.20.112.52] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 4.1.6) with HTTP id 2714449 for lml@lancaironline.net; Fri, 07 Nov 2003 20:29:27 -0500 From: "Marvin Kaye" Subject: Re: [LML] Re: good news (speed) / bad news (resonance) To: lml X-Mailer: CommuniGate Pro WebUser Interface v.4.1.6 Date: Fri, 07 Nov 2003 20:29:27 -0500 Message-ID: In-Reply-To: <3FAC157C.7080000@ieee.org> MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "Charles R. Patton" : Scott, Thinking back on my aeileron counterweight resonance with the engine speed, is it possible that the resonance is due to elevator push-pull tube tension? Your comment about engine speed seems the most telling to me. During climb, the tension on the push-pull tube is different than in level flight. It is easy to imagine that going in and out of resonance. A simple test would be to take a bungee cord and pull at right angles on the tube at mid-span and see if the characteristics of the hum change. Charles Patton 360JM