Return-Path: Received: from slkcpop1.slkc.uswest.net ([206.81.128.1]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with SMTP id com for ; Tue, 8 Jun 1999 01:36:09 -0400 Received: (qmail 1248 invoked by alias); 8 Jun 1999 05:38:59 -0000 Received: (qmail 1222 invoked by uid 0); 8 Jun 1999 05:38:58 -0000 Received: from edsl164.slkc.uswest.net (HELO scottdah.slkc.uswest.net) (209.181.81.164) by slkcpop1.slkc.uswest.net with SMTP; 8 Jun 1999 05:38:58 -0000 Delivered-To: fixup-lancair.list@olsusa.com@fixme From: "Scott Dahlgren" To: "___Lancair list" Subject: chrome plating Date: Mon, 7 Jun 1999 23:47:13 -0600 Message-ID: Importance: Normal X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> John Barrett, you may want to reconsider chrome plating the gear legs. chrome in its raw shiny form is very brittle. Even low levels of flexing on straining/flexible part cracks the chrome at the interface. This creates a stress riser that works its way down into the surface of the structural member and often breaks parts over time (that is why chrome plated bumpers tend to start cracking at their edges). I have read some reports that say chrome plating is unwise, and in most cases not allowed on any structural member of the aircraft. even if you could find a soft or otherwise compatible sub-surface bond coating, You would need to be very careful in controlling its thickness and hardness as well as assessing the new fatigue life of the member. also, if you ever decide to sell the aircraft and it caused a failure, you might be liable due to chromes known incompatibility on structural members. Just a thought. Scott >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML homepage: http://www.olsusa.com/Users/Mkaye/maillist.html