Return-Path: Sender: (Marvin Kaye) To: lml Date: Tue, 20 May 2003 10:22:28 -0400 Message-ID: X-Original-Return-Path: Received: from [206.246.194.60] (HELO visi.net) by logan.com (CommuniGate Pro SMTP 4.1b6) with ESMTP id 2356068 for lml@lancaironline.net; Tue, 20 May 2003 10:05:06 -0400 Received: from [68.50.58.204] (account rpastusek@htii.com HELO cp172883-b.arlngt01.va.comcast.net) by visi.net (CommuniGate Pro SMTP 4.0.6) with ESMTP id 99201594 for lml@lancaironline.net; Tue, 20 May 2003 10:03:14 -0400 Reply-To: From: "Bob Pastusek" X-Original-To: "Lancair Mailing List" Subject: RE: [LML] LNC2 Horiz.stab hinge center line X-Original-Date: Tue, 20 May 2003 10:07:58 -0400 X-Original-Message-ID: <039701c31ed9$377ecfe0$6601a8c0@cp172883-b.arlngt01.va.comcast.net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0398_01C31EB7.B06D2FE0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0398_01C31EB7.B06D2FE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Dale, Put a layer of electrical or good (blue) masking tape over the spar to simulate the adhesive and lay the skin in place--after you've sanded and fitted the skin in it's final position. It won't be a perfect simulation, but much closer than any other method we've tried. BE SURE not to use duct tape for this--it's almost impossible to get the residue off this critical bond line--and to carefully clean/sand the parts again before bonding after you remove the "spacer." We've almost quit using duct tape for anything on the airplane because of the cleanup mess--and my concern that we weren't really getting it all off. Only recent exception has been to apply it on top of release tape for spacing...then pealed off the whole mess of tape. In my experience, your troubles to install the elevator and rudder pivots as close to the centerline as possible will be well rewarded. Even a 1/16" difference is noticeable as you work the gap clearances later. Likewise, making the radius on the front of the rudder and elevators correspond to the hinge centerline/pivot is a challenge, but also worth the effort. Bob -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of D&BWILLS Sent: Monday, May 19, 2003 11:13 PM To: Lancair Mailing List Subject: [LML] LNC2 Horiz.stab hinge center line I am trying to establish an accurate center line for the hinges on the the horizontal stab. I contacted Redmond today and They brought up a the following point.Even though you can split the difference between the bottom skin and the top of the spar during layout, when you install the top skin, there is a good chance that the bonding epoxy will be thicker than the factory bond on the bottom skin. This would raise the top skin off the spar a little and put it further away from the center line than the bottom skin, and now the line is not in the center, it is closer to the bottom skin. Has anyone had this problem and is there a better way to find the centerline than splitting the difference at the hinge points? Thank You Dale Wills ------=_NextPart_000_0398_01C31EB7.B06D2FE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Dale,

Put a=20 layer of electrical or good (blue) masking tape over the spar to = simulate the=20 adhesive and lay the skin in place--after you've sanded and fitted the = skin in=20 it's final position. It won't be a perfect simulation, but much closer = than any=20 other method we've tried. BE SURE not to use duct tape for this--it's = almost=20 impossible to get the residue off this critical bond line--and to = carefully=20 clean/sand the parts again before bonding after you remove the "spacer." = We've almost quit using duct tape for anything on the airplane = because of=20 the cleanup mess--and my concern that we weren't really getting it all = off. Only=20 recent exception has been to apply it on top of release tape for = spacing...then=20 pealed off the whole mess of tape.

In my=20 experience, your troubles to install the elevator and rudder pivots as = close to=20 the centerline as possible will be well rewarded. Even a 1/16" = difference is=20 noticeable as you work the gap clearances later. Likewise, making the = radius on=20 the front of the rudder and elevators correspond to the hinge = centerline/pivot=20 is a challenge, but also worth the effort.

Bob

-----Original Message-----
From: Lancair Mailing = List=20 [mailto:lml@lancaironline.net]On Behalf Of = D&BWILLS
Sent:=20 Monday, May 19, 2003 11:13 PM
To: Lancair Mailing=20 List
Subject: [LML] LNC2 Horiz.stab hinge center=20 line

I am trying to establish an accurate = center line=20 for the hinges on the the horizontal stab. I contacted Redmond today = and They=20 brought up a the following point.Even though you can split the = difference=20 between the bottom skin and the top of the spar during layout, when = you=20 install the top skin, there is a good chance that the bonding epoxy = will be=20 thicker than the factory bond on the bottom skin. This would raise the = top=20 skin off the spar a little and put it further away from the center = line than=20 the bottom skin, and now the line is not in the center, it is closer = to the=20 bottom skin.

Has anyone had this problem and is = there a better=20 way to find the centerline than splitting the difference at the hinge=20 points?

Thank You

Dale = Wills

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