X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 10 Oct 2007 19:20:49 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-spurfowl.atl.sa.earthlink.net ([209.86.89.66] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2380192 for lml@lancaironline.net; Wed, 10 Oct 2007 18:30:47 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.66; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=rQNsDrXg+PDx+NfuWedoZUUscJRroQYjlezBprxpjiSrcAY/zfwp4JGGRC8bVECn; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.66] (helo=ccaselt2) by elasmtp-spurfowl.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1Ifk4A-0004Rh-4m for lml@lancaironline.net; Wed, 10 Oct 2007 18:30:10 -0400 X-Original-Message-ID: <0d0e01c80b8d$1d88ad90$0302a8c0@nvidia.com> From: "Colyn Case on earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Legacy Engine/Prop/Speed/ Vibration? X-Original-Date: Wed, 10 Oct 2007 18:30:08 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0D0B_01C80B6B.95EA8500" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940b9cdd02cefc349361804c68a9440a102350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.66 This is a multi-part message in MIME format. ------=_NextPart_000_0D0B_01C80B6B.95EA8500 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable That reminds me, my plane developed a vibration 20? hours after first = flight. It was airspeed dependent and sounded engine-like. Turned out = to be the cowl rubbing on the left intake manifold. It was airspeed = dependent because pressure inside the cowl tended to force it into more = of a sphere, pulling it closer to the manifold. ------=_NextPart_000_0D0B_01C80B6B.95EA8500 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

That reminds me, my plane developed a = vibration 20?=20 hours after first flight. It was airspeed dependent and sounded=20 engine-like. Turned out to be the cowl rubbing on the left = intake=20 manifold. It was airspeed dependent because pressure inside = the cowl=20 tended to force it into more of a sphere, pulling it closer to the=20 manifold.

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