X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from vms173007pub.verizon.net ([206.46.173.7] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4962748 for flyrotary@lancaironline.net; Sat, 30 Apr 2011 12:27:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.7; envelope-from=finn.lassen@verizon.net Received: from [192.168.1.100] ([unknown] [71.98.174.127]) by vms173007.mailsrvcs.net (Sun Java(tm) System Messaging Server 7u2-7.02 32bit (built Apr 16 2009)) with ESMTPA id <0LKH00KW44D22111@vms173007.mailsrvcs.net> for flyrotary@lancaironline.net; Sat, 30 Apr 2011 11:27:03 -0500 (CDT) Message-id: <4DBC3853.3070603@verizon.net> Date: Sat, 30 Apr 2011 12:26:59 -0400 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-version: 1.0 To: Rotary motors in aircraft Subject: Timing tuning References: In-reply-to: Content-type: text/plain; charset=windows-1252; format=flowed Content-transfer-encoding: 7bit I recently got interested in timing. I tried to verify the static timing (using the no-suction/no-pressure method to find TDC). It seems to be around 30 degrees BTDC. Now, here's the question: Using Mode 8 I can adjust the timing +/- 10 degrees. But what should I be looking at for optimal timing? EGTs, RPM, Mixture, what? Finn