Return-Path: Received: from dewey.cadwell.com ([208.26.246.18]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with SMTP id com for ; Tue, 16 Jan 2001 14:04:32 -0500 Received: by dewey.cadwell.com with SMTP (Microsoft Exchange Server Internet Mail Connector Version 4.0.993.5) id <01C07FAD.7300B5B0@dewey.cadwell.com>; Tue, 16 Jan 2001 11:14:10 -0800 Message-ID: From: Carl Cadwell To: "'lancair.list@olsusa.com'" Subject: Wet compass deflection Date: Tue, 16 Jan 2001 11:14:08 -0800 X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> In switching on the power, the wet compass swung 40 degrees. The wet compass is located in the middle of the glare shield on our IVP. The only solution that I came up with is a 6" x 6" mu metal sheet that was placed under the glare shield and reduced the swing to 2-3 degrees when the power is turned on. I have not taken the airplane to a compass rose to swing it yet. Does anyone know if this is an acceptable solution? Is this going to cause some other problems when flying starts next month? Note: mu metal is usually used to protect sensitive electronics from outside electrical and magnetic interference. N25CL Carl Cadwell >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>