X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 28 Nov 2008 15:25:02 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTP id 3319339 for lml@lancaironline.net; Wed, 26 Nov 2008 22:07:44 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=rpharis@teamimc.com Received: from [71.116.122.253] (helo=ws1) by elasmtp-kukur.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1L5XDh-0007S4-7a for lml@lancaironline.net; Wed, 26 Nov 2008 22:07:09 -0500 Reply-To: From: "Rod Pharis" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] sealing aileron push rod on 4P X-Original-Date: Wed, 26 Nov 2008 19:05:46 -0800 X-Original-Message-ID: <004b01c9503d$0bdd7620$2101a8c0@ws1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004C_01C94FF9.FDBA3620" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) x-mimeole: Produced By Microsoft MimeOLE V6.00.2800.1914 Importance: Normal In-Reply-To: X-ELNK-Trace: 1293b74446918d85d780f4a490ca6956abb457f1b4332f5279207259859d2e45aad852a9b45f5cdb350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.116.122.253 This is a multi-part message in MIME format. ------=_NextPart_000_004C_01C94FF9.FDBA3620 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I suggest a rubber "bellows-style" diaphragm of appropriate dimensions. It is always sealed, and there is no sliding joint ... just a flexible axial diagram, thick enough and small enough to preclude distortion from pressure differential.. Rod -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of bronnenmeier@GROBSYSTEMS.COM Sent: Tuesday, November 25, 2008 8:29 AM To: lml@lancaironline.net Subject: [LML] sealing aileron push rod on 4P Dear subscribers, I want to get rid of my neoprene hose around the push rods for the ailerons that keeps the cabin pressure inside. I mounted my home sealing device on the flange outside of the cabin that originally clamped the neoprene hose. The push rod slides on an O-ring in and out and the radial movement gets compensated by the disk that moves up and down in the housing. I made all parts out of Aluminum and the push rod is stainless steel. I have it mounted, I got the wing on and it seems to work fine. When I discussed my solution with a friend he made a very good point: Altitude changes, condensation, freezing of condensed water I am worried now that the disk could freeze up and my ailerons get stuck. Do I have to worry about this since I am not going higher than probably 25,000 feet? Does anyone have an advice on this? Ralf Bronnenmeier 1070 Navajo Drive Bluffton, OH 45817 Phone: (419) 369 12 33 Fax: (419) 369 33 32 E-mail: bronnenmeier@grobsystems.com ------=_NextPart_000_004C_01C94FF9.FDBA3620 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I=20 suggest a rubber "bellows-style" diaphragm of appropriate = dimensions. It=20 is always sealed, and there is no sliding joint ... just a flexible = axial=20 diagram, thick enough and small enough to preclude distortion from = pressure=20 differential..

Rod

-----Original Message-----
From: Lancair Mailing = List=20 [mailto:lml@lancaironline.net]On Behalf Of=20 bronnenmeier@GROBSYSTEMS.COM
Sent: Tuesday, November 25, = 2008=20 8:29 AM
To: lml@lancaironline.net
Subject: [LML] = sealing=20 aileron push rod on 4P

Dear=20 subscribers,

I want to get rid of my = neoprene=20 hose around the push rods for the ailerons that keeps the cabin = pressure=20 inside.

I mounted my home = sealing device=20 on the flange outside of the cabin that originally clamped the = neoprene=20 hose.

The push rod slides on = an O-ring=20 in and out and the radial movement gets compensated by the disk that = moves up=20 and down in the housing.

I made all parts out of = Aluminum=20 and the push rod is stainless steel. I have it mounted, I got the wing = on and=20 it seems to work fine.

When I discussed my = solution with=20 a friend he made a very good point:

Altitude changes, = condensation,=20 freezing of condensed water

I am worried now that = the disk=20 could freeze up and my ailerons get = stuck.

Do I have to worry about = this=20 since I am not going higher than probably 25,000=20 feet?

Does anyone have an = advice on=20 this?

Ralf=20 Bronnenmeier

1070 Navajo=20 Drive

Bluffton,=20 OH 45817
Phone: (419) 369 12=20 33

Fax: (419)=20 369 33 32

E-mail:=20 bronnenmeier@grobsystems.com

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