Return-Path: Received: from burgoyne.com ([209.197.0.8]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with ESMTP id com for ; Mon, 26 Jul 1999 10:51:35 -0400 Received: from clkeller.burgoyne.com (pmc20.burgoyne.com [209.197.2.124]) by burgoyne.com (8.9.1/8.9.1) with SMTP id IAA28039 for ; Mon, 26 Jul 1999 08:54:53 -0600 Message-ID: <379C74F7.2CFA@burgoyne.com> Date: Mon, 26 Jul 1999 08:47:19 -0600 From: "C.L.Keller" To: lancair.list@olsusa.com Subject: Elevator Counterweights X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> For my elevator counterweights I made plaster of paris castings, wrapped them with release tape, then made plaster of paris molds. Cut them into two pieces to get them off the castings, then glued them back together with a Permatex gasket sealing compound. This is a copper high heat silicone compound, red in color. I coated the inside of the mold with this same gooey stuff and allowed it to dry before pouring the lead. Since the compound is a pretty good insulator, I saw none of the steam release or spattering that Jim McKibbin mentioned (25 July). The surface of the final counterweight was rather rough, but a little filing took care of that. Put the weights into place with Hysol before I closed the elevators. They are well over balanced so that final balancing can be done with a drill. This worked so well I plan to use the same procedure for the rudder when the time comes. Charles Keller >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML homepage: http://www.olsusa.com/Users/Mkaye/maillist.html