X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Sat, 14 Oct 2006 16:37:41 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-galgo.atl.sa.earthlink.net ([209.86.89.61] verified) by logan.com (CommuniGate Pro SMTP 5.1c.6) with ESMTP id 1466394 for lml@lancaironline.net; Sat, 14 Oct 2006 15:56:41 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.61; envelope-from=liegner@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=lD8sBtecAoiP45Sr2+y5B/mU29H9Py/XJvTeU6/EBn3eljfJz1I92H3TcBSupygK; h=Received:Mime-Version:X-Sender:Message-Id:Date:To:From:Subject:Content-Type:X-ELNK-Trace:X-Originating-IP; Received: from [69.69.120.22] (helo=[10.0.1.8]) by elasmtp-galgo.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1GYpcL-0002oF-8O for lml@lancaironline.net; Sat, 14 Oct 2006 15:56:21 -0400 Mime-Version: 1.0 X-Sender: liegner@earthlink.net@pop.earthlink.net X-Original-Message-Id: X-Original-Date: Sat, 14 Oct 2006 15:56:17 -0400 X-Original-To: "Lancair Mailing List" From: "Jeffrey Liegner, MD" Subject: Nose Down Trim Required in Level Cruise (LIVP) Content-Type: text/plain; charset="us-ascii" ; format="flowed" X-ELNK-Trace: edc6c9c2805b57e3d780f4a490ca69563f9fea00a6dd62bc42da0b4b68c856a02fcdd5c5a2672306350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 69.69.120.22 Question for LIVP Drivers: In level cruise, 30"-32"MAP 2500RPM, how much nose trim do you require for hands-off flight? In cruise, with the CG well inside the range, the plane requires ~50%+ indicator nose down trim, and I can see the elevator counter weight sticking up and in the air flow. Seems way to much drag, and a focal point for ice to interfer with elevator movement. I've heard pilots say the LIVP airplane wants to nose up climb in cruise, and the trim down requirement is common. But I don;t recall this from training. This nose down trims back to neutral setting in slow flight and approach. Is this a horizontal stabilizer's angle of attack issue or something completely different. Remember, this is not a CG issue. If you've addressed this on your plane, how did you do so? Jeff Liegner N334P