X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao106.cox.net ([68.230.241.40] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2713671 for flyrotary@lancaironline.net; Sun, 03 Feb 2008 16:42:55 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.40; envelope-from=bob.kaufmann@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao106.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20080203214214.OFLR1430.fed1rmmtao106.cox.net@fed1rmimpo01.cox.net> for ; Sun, 3 Feb 2008 16:42:14 -0500 Received: from Left ([68.104.63.91]) by fed1rmimpo01.cox.net with bizsmtp id l9i61Y00Q1y7R1w0000000; Sun, 03 Feb 2008 16:42:06 -0500 From: "bob.kaufmann" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: Low compression rotors Date: Sun, 3 Feb 2008 13:44:13 -0800 Message-ID: <040f01c866ad$eb05a450$c110ecf0$@kaufmann@cox.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Achmhk/EAKX37EAdRdW4U7VTuq/f6wAJoiFA Content-Language: en-us x-cr-hashedpuzzle: zYs= AZyX Bqu2 BzSM B9t8 B+tK DjeD EkKn Ekvs EvvI GNpV G0kd IAo+ IH+T KlpC L5IN;1;ZgBsAHkAcgBvAHQAYQByAHkAQABsAGEAbgBjAGEAaQByAG8AbgBsAGkAbgBlAC4AbgBlAHQA;Sosha1_v1;7;{42CCA226-6F30-4766-B938-0DF3F617B2C0};YgBvAGIALgBrAGEAdQBmAG0AYQBuAG4AQABjAG8AeAAuAG4AZQB0AA==;Sun, 03 Feb 2008 21:43:25 GMT;TABvAHcAIABjAG8AbQBwAHIAZQBzAHMAaQBvAG4AIAByAG8AdABvAHIAcwA= x-cr-puzzleid: {42CCA226-6F30-4766-B938-0DF3F617B2C0} Gang I have a 20B that I have taken the turbos off and will be using it in an aircraft, a RV-10. A friend of mine said that I should use the 9.7 compression rotors instead of the turbo rotors. What say you all? I have pulled the engine off to powder coat the engine mount and if I'm going to switch rotors, now is the time before I hang the engine again. I have the flat plate on milling machine so I could make plates for the 20B if people wanted. I think I would be competitive. I would like to do them in groups of ten if people are interested. Bob K Finished except all the parts aren't together yet.