Return-Path: Received: from fed1rmmtao08.cox.net ([68.230.241.31] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 556595 for flyrotary@lancaironline.net; Sun, 05 Dec 2004 12:14:05 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.31; envelope-from=daveleonard@cox.net Received: from davidandanne ([68.111.224.107]) by fed1rmmtao08.cox.net (InterMail vM.6.01.04.00 201-2131-117-20041022) with SMTP id <20041205171334.CZWI9706.fed1rmmtao08.cox.net@davidandanne> for ; Sun, 5 Dec 2004 12:13:34 -0500 From: "DaveLeonard" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] gear drive for distributor and oil metering pump Date: Sun, 5 Dec 2004 09:13:43 -0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-Reply-To: X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Importance: Normal They both run off the worm gear. That gear will have the same advance for both items. The CAS is 1/2 engine speed so it must be the same for the main drive on the oil injection pump. There may be some other changes in that ratio elsewhere in the pump drive. Dave Leonard > > > The oil metering pump and the distributor (or crank angle sensor) both > run off the same gear on the end of the eccentric shaft. Do both of > them run at the same RPM as the engine, or does the larger gear work as > a reduction drive? >