X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 05 Jun 2007 23:52:07 -0400 Message-ID: X-Original-Return-Path: Received: from imf16aec.mail.bellsouth.net ([205.152.59.64] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2086485 for lml@lancaironline.net; Tue, 05 Jun 2007 23:35:14 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.64; envelope-from=poprundell@bellsouth.net Received: from ibm58aec.bellsouth.net ([65.0.24.89]) by imf16aec.mail.bellsouth.net with ESMTP id <20070606033435.MNMK23516.imf16aec.mail.bellsouth.net@ibm58aec.bellsouth.net> for ; Tue, 5 Jun 2007 23:34:35 -0400 Received: from Lanny ([65.0.24.89]) by ibm58aec.bellsouth.net with ESMTP id <20070606033435.KUGT26982.ibm58aec.bellsouth.net@Lanny> for ; Tue, 5 Jun 2007 23:34:35 -0400 From: "lanny" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] IV-P Rudder Trim X-Original-Date: Tue, 5 Jun 2007 22:34:31 -0500 X-Original-Message-ID: <000001c7a7eb$98e50ed0$6101a8c0@Lanny> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C7A7C1.B00F06D0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C7A7C1.B00F06D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Scott, I'm new to the LML site but I have built several aircraft over the years. One thing that scares me on the Lancair is flutter. I recently found a IV elevator trim that could easily be moved up and down as much as 1" at the trailing edge. It turned out to the hinge that the tab was attached to was bending. The owner had not had a problem with flutter but the hinge was completely worn out due to vibration in only a couple hundred hours. Lowering the attach point on the horn reduces the leverage and increases the movement of the tab. This will make it too sensitive and lessen the arm needed to prevent flutter. I don't recommend it. Lanny -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Scott Seagrave Sent: Thursday, May 31, 2007 7:09 PM To: lml@lancaironline.net Subject: [LML] IV-P Rudder Trim I'm in the process of closing my rudder and building the trim tab. I am thinking about mounting the pushrod lower on the attach bracket and cutting the top of the bracket off, allowing the entire mechanism to live internally. I know the external arm doesn't create enough drag to worry about, but I am just not crazy about the way it works. I'm curious as to who else has attempted this and what information they can pass along. Scott Seagrave Lancair IV-P (still too early for percentages!) N721MS (reserved) _____ Need a vacation? Get great deals to amazing places on Yahoo! Travel. ------=_NextPart_000_0001_01C7A7C1.B00F06D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Scott,

I’m new to the LML site but I = have built several aircraft over the years.  One thing that scares me on the Lancair is flutter.  I recently found = a IV elevator trim that could easily be moved up = and down as much as 1” at the trailing edge.  It turned out to the hinge that the tab was attached to was bending.  = The owner had not had a problem with flutter but the hinge was completely = worn out due to vibration in only a couple hundred hours.  Lowering the attach point on the = horn reduces the leverage and increases the movement of the tab.  This will make it too sensitive = and lessen the arm needed to prevent flutter.  I don’t recommend it.

Lanny

 

-----Original = Message-----
From: Lancair Mailing = List [mailto:lml@lancaironline.net] On = Behalf Of Scott Seagrave
Sent: Thursday, May 31, = 2007 7:09 PM
To: = lml@lancaironline.net
Subject: [LML] IV-P = Rudder Trim

 

I'm in the process of closing my rudder and = building the trim tab.  I am thinking about mounting the pushrod lower on = the attach bracket and cutting the top of the bracket off, allowing the = entire mechanism to live internally.  I know the external arm doesn't = create enough drag to worry about, but I am just not crazy about the way it works. 

 

I'm curious as to who else has attempted this = and what information they can pass along.

 

Scott Seagrave

Lancair IV-P (still too early for = percentages!)
N721MS (reserved)

  =

Need a vacation? Get great deals to amazing places on Yahoo! Travel. =

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