Return-Path: Received: from pop3.olsusa.com ([63.150.212.2] verified) by logan.com (CommuniGate Pro SMTP 3.5b2) with ESMTP id 831764 for rob@logan.com; Thu, 19 Jul 2001 20:44:10 -0400 Received: from post.mail.nl.demon.net ([194.159.73.21]) by pop3.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-71866U8000L800S0V35) with ESMTP id com for ; Thu, 19 Jul 2001 17:35:27 -0400 Received: from [194.159.224.164] (helo=fpgcsxhi) by post.mail.nl.demon.net with smtp (Exim 3.22 #1) id 15NLb3-000IEx-00; Thu, 19 Jul 2001 21:44:38 +0000 Date: Thu, 19 Jul 2001 23:40:54 +0200 To: "sky2high@hotmail.com" , "lancair.list@olsusa.com" cc: "Sky2high@aol.com" From: "colmar" Importance: medium Priority: normal Message-Id: <995578854-0-jones@colmar.demon.nl> Subject: Re:LNC2 Hydraulic System Experience - Considerations for Leg MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Id: <995578854-1-jones@colmar.demon.nl> Content-Transfer-Encoding: 8bit X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Commiseration on all your hydraulics problems. I can empathise because I went through a completely different set - but equally frustrating -set of hydraulics problems! Mainly involving leaking, or bursting, flared joints. And hence I would like to ask the group's opinion on whether the type of Al. tube supplied in the original LNC2 kit is not too soft for this hydraulic application. On more than one occasion during "my problems", I have had a flared joint fail (near explosively) by being essentially "extruded" out of the olive/cap nut clamping action. So that, when examined afterwards, there was either a sharp-edged rim, or a broken edge because it had left an annular remnant still inside the olive/cap nut clamp. It sounds like what you observed about the end of the flared pipe, when disassembling the pressure switch, corresponds to a (pre-explosive failure) stage of this long-term extrusion process. When I was building, a friend who was building a Glasair noted that the tubing provided in his kit was much harder to flare without causing cracking of the flared edge, than my tubing was. But maybe we are paying the price of easier flaring with a long-term problem of joint failure by extrusion. Any opinions? Colin Jones (a.k.a. around the hangar as "Mr Hydraulics"). >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>