Return-Path: Received: from ddi.digital.net ([198.69.104.2]) by truman.olsusa.com (Post.Office MTA v3.1.2 release (PO203-101c) ID# 0-44819U2500L250S0) with ESMTP id AAA26224 for ; Wed, 7 Oct 1998 19:35:55 -0400 Received: from john (max-roc3-49.digital.net [206.228.238.49]) by ddi.digital.net (8.9.1/8.9.1) with SMTP id TAA00569 for ; Wed, 7 Oct 1998 19:35:50 -0400 (EDT) Message-Id: <3.0.3.32.19981007193143.00726cd4@mail.digital.net> Date: Wed, 07 Oct 1998 19:31:43 -0400 To: lancair.list@olsusa.com From: John Cooper Subject: Carbon fiber tubing X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Angier-- Forget about the weight savings from using carbon fiber push-pull tubes. No vale la pena (It ain't worth the pain, in Spanish). Sure, on the space shuttle we use "boron struts" as structural members, but they cost about a zillion dollars each , and they are extremely fragle to side loading. Have some priorities, man! The HR303 outer sheath deteriorates and falls off after about 5 years due to exposure to hydraulic fluid, exposing the fiberglass (?) braid inside. That's the only problem with the stuff that I know about. Best--