Return-Path: Received: from smtpa.gateway.net ([208.230.117.254]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with ESMTP id com for ; Sat, 2 Oct 1999 01:38:29 -0400 Received: from oemcomputer (1Cust125.tnt1.coeur-dalene.id.da.uu.net [63.27.107.125]) by smtpa.gateway.net (8.9.3/8.9.3) with SMTP id BAA10194 for ; Sat, 2 Oct 1999 01:42:18 -0400 (EDT) Message-ID: <004d01bf0c99$2c7ecba0$7d6b1b3f@oemcomputer> Reply-To: "dfs" From: "dfs" To: "Lancair List" Subject: LNC2 hydraulic hoses Date: Fri, 1 Oct 1999 22:43:48 -0700 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Again, I'm finding myself agreeing with Brent. This time re: hard vs. flex hoses. You all might be interested that on the B-1, we used HARD LINES on the nose retraction transfer lines - that is, from hard, fixed fittings on the nose well bulkhead, to the hydro actuators on the nose gear struts. These things swing about 90 degrees and the hard lines are Ti tubes. The secret is, both lines are coiled about four or five times to make a coil of about 12 inches diameter. All the required flex is taken up by the coils winding up or unwinding when the gear retracts or extends. Of course, flex lines are notoriously unreliable at 6000 psi, but the concept could work anywhere. Dan Schaefer >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html