X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 13 Sep 2005 23:33:59 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m18.mx.aol.com ([64.12.138.208] verified) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTP id 721226 for lml@lancaironline.net; Tue, 13 Sep 2005 22:10:24 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.208; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-m18.mx.aol.com (mail_out_v38_r5.3.) id q.b9.60242f6d (17377) for ; Tue, 13 Sep 2005 22:09:24 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Tue, 13 Sep 2005 22:09:24 EDT Subject: Re: [LML] airframe vibration X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1126663764" X-Mailer: 9.0 Security Edition for Windows sub 5009 X-Spam-Flag: NO -------------------------------1126663764 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 9/13/2005 8:36:28 P.M. Central Standard Time, goconnell@dodo.com.au writes: Guy's, I have noticed that particarly on descent or high speed climb out I get markedly increased noise accomapined by slight vibration. Is this to do with power setting (appears to correlate somewhat with higher rpm settings). Has anyon e experienced this phenomenon and would it be related to a natural harmonic for the aircraft? Gerard, Have you noticed aluminum dust streaks behind the outboard elevator hinges or, more likely in Australia, extra wear on the outboard center-line hinges in the case of the MKII tail? Anyone else? I have this problem since using larger diameter hinge pins instead of teflon coated ones. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1126663764 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 9/13/2005 8:36:28 P.M. Central Standard Time,=20 goconnell@dodo.com.au writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Guy's, I=20 have noticed that particarly on descent or high speed climb out I get mark= edly=20 increased noise accomapined by slight vibration. Is this to do with power=20 setting (appears to correlate somewhat with higher rpm settings). Has anyo= n e=20 experienced this phenomenon and would it be related to a natural harmonic=20= for=20 the aircraft?
Gerard,
 
Have you noticed aluminum dust streaks behind the outboard elevator hin= ges=20 or, more likely in Australia,  extra wear on the outboard center-line=20 hinges in the case of the MKII tail?
 
Anyone else?  I have this problem since using larger diameter hing= e=20 pins instead of teflon coated ones.=20
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)



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