X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 5.0.7f) with ESMTP id 950267 for flyrotary@lancaironline.net; Mon, 23 Jan 2006 08:21:06 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=sladerj@bellsouth.net Received: from ibm68aec.bellsouth.net ([65.2.89.54]) by imf24aec.mail.bellsouth.net with ESMTP id <20060123131827.CSNC3127.imf24aec.mail.bellsouth.net@ibm68aec.bellsouth.net> for ; Mon, 23 Jan 2006 08:18:27 -0500 Received: from JSLADE ([65.2.89.54]) by ibm68aec.bellsouth.net with ESMTP id <20060123131826.VJOK20827.ibm68aec.bellsouth.net@JSLADE> for ; Mon, 23 Jan 2006 08:18:26 -0500 From: "John Slade" To: "Rotary motors in aircraft" Subject: Variable RPM? Date: Mon, 23 Jan 2006 08:18:24 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01C9_01C61FF5.949BB9C0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_01C9_01C61FF5.949BB9C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Tracy, This discussion leads me to a question. My rpm reading seems accurate most of the time, but varies a lot during a run-up. For example, if I bring the rpm to 4700 rpm the rpm reading will remain steady for a few seconds, then drop to around 4200, then bounce around between 4700 and 4200 without any movement of the throttle or change in engine sound. Any thoughts? John ------=_NextPart_000_01C9_01C61FF5.949BB9C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Tracy,
This discussion leads me to a=20 question.
My rpm reading seems accurate = most of=20 the time, but varies a lot during a run-up.
For example, if I bring the rpm to = 4700 rpm the rpm reading will remain steady for a few = seconds,=20 then drop to around 4200, then bounce around between 4700 and 4200 = without any=20 movement of the throttle or change in engine sound.
Any=20 thoughts?
John
 
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