Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2753066 for flyrotary@lancaironline.net; Thu, 20 Nov 2003 09:31:03 -0500 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id hAKEV1sf010129 for ; Thu, 20 Nov 2003 09:31:02 -0500 (EST) Message-ID: <001201c3af72$6f9e8c60$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" Subject: Illustration of different ports and their timing Date: Thu, 20 Nov 2003 09:27:32 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Here is an excellent page on the different ports including their timings. Does not include the peripheral port http://www.rotaryengineillustrated.com/RE101pages/4-ports101.html On the second illustration you can click on the P (primary) or S (Secondary) for the year engine you are interested in and it will draw that type port relative to the timing lines on the illustration. Then you can also select some of the special porting slection listed below the stock for a visual comparison Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com