Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Tue, 28 Sep 2004 18:07:59 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m17.mx.aol.com ([64.12.138.207] verified) by logan.com (CommuniGate Pro SMTP 4.2.3) with ESMTP id 435823 for lml@lancaironline.net; Tue, 28 Sep 2004 17:36:00 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.207; envelope-from=MikeEasley@aol.com Received: from MikeEasley@aol.com by imo-m17.mx.aol.com (mail_out_v37_r3.7.) id q.79.348945cf (4328) for ; Tue, 28 Sep 2004 17:35:29 -0400 (EDT) From: MikeEasley@aol.com X-Original-Message-ID: <79.348945cf.2e8b3320@aol.com> X-Original-Date: Tue, 28 Sep 2004 17:35:28 EDT Subject: Re: [LML] Re: How I did the wing incidence measurements X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1096407328" X-Mailer: 9.0 for Windows sub 5113 -------------------------------1096407328 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Ron, The back of my jig rested on the top of the trailing edge, not centered on the chord line. However, I was comparing "apples to apples". Every measurement was taken the same left to right. Since the trailing edges are the same thickness, the measurement from the top should be perfectly accurate for left to right comparisons. I wasn't measuring "absolute" incidence, I was measuring "relative" incidence. I measured to the trailing edge of the top wing skin and to the trailing edge of the flaps, no real difference since I was very careful to have my flap angles the same. The difference in incidence didn't start until the last 3 or 4 feet of the wing anyway. I measured to the trailing edge of the ailerons, and to the training edge of the wing skin forward of the ailerons. No real difference. As I said before, you can stand behind my plane and see the difference in the wings, on looks definitely thicker by eyeball. Mike -------------------------------1096407328 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Ron,

The back of my jig rested on the top of the trailing edge, not centered= on the chord line. However, I was comparing "apples to apples". = Every measurement was taken the same left to right. Since the trailin= g edges are the same thickness, the measurement from the top should be perfe= ctly accurate for left to right comparisons. I wasn't measuring "absol= ute" incidence, I was measuring "relative" incidence.

I measured to the trailing edge of the top wing skin and to the trailin= g edge of the flaps, no real difference since I was very careful to have my=20= flap angles the same. The difference in incidence didn't start until t= he last 3 or 4 feet of the wing anyway.

I measured to the trailing edge of the ailerons, and to the training ed= ge of the wing skin forward of the ailerons. No real difference. = As I said before, you can stand behind my plane and see the difference in t= he wings, on looks definitely thicker by eyeball.

Mike

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