X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 20 Jun 2011 08:00:14 -0400 Message-ID: X-Original-Return-Path: Received: from [66.70.126.15] (HELO omta0113.mta.everyone.net) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5025486 for lml@lancaironline.net; Sun, 19 Jun 2011 20:23:56 -0400 Received-SPF: none receiver=logan.com; client-ip=66.70.126.15; envelope-from=bknotts@buckeye-express.com Received: from dm0213.mta.everyone.net (bigip-ext [172.16.0.1]) by omta0113.mta.everyone.net (Postfix) with ESMTP id 342A91750259 for ; Sun, 19 Jun 2011 17:23:16 -0700 (PDT) X-Eon-Dm: dm0213 Received: by dm0213.mta.everyone.net (EON-AUTHRELAY2 - 48f07e90) id dm0213.4dfc2a9b.5ef30 for ; Sun, 19 Jun 2011 17:23:14 -0700 X-Eon-Sig: AQK8DXBN/pLygtV+kgIAAAAB,a8d6b5cf658eda0813bee099c05a3dae X-Original-Message-ID: <4DFE92F1.4040305@buckeye-express.com> X-Original-Date: Sun, 19 Jun 2011 20:23:13 -0400 From: "F. Barry Knotts" Reply-To: bknotts884@earthlink.net User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: [LML] Re: And how about a full feathering prop? References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 110619-0, 06/19/2011), Outbound message X-Antivirus-Status: Clean Jeff, I think I have the same full feathering Hartzell prop on my IV-P (HC-H3YF-2UF). The governor is a McCauley #DCF290D7X/T3. I can control the speed, but I can't feather this prop with the prop control. I was told at one time that this prop is designed for racing and it only will go to full feather if two things occur simultaneously; loss of oil pressure and RPM above 1200. Then it locks in feather and you do whatever you need to do to get on the ground. The only way to unfeather it at that point requires attaining 1200 RPM WITH oil pressure. Tough to do with the starter, the engine must start and produce oil pressure...while feathered. These two things conditions for feathering should only occur together if you have a catastrophic loss of oil pressure with a windmilling prop (or driven). Otherwise, you would have the prop feather every time you shut the engine down. So my question is: How did you get it to feather? Do you have a different prop governor? I called Hartzell once and they said that they did not have a recommended governor for the prop. (That seemed a little strange.) Inquiring minds.... Barry Knotts Lancair IV-P, N4XE On 6/19/2011 11:30 AM, liegner@earthlink.net wrote: > I have practiced engine out glide with my full feather three blade > Hartzell prop (Model number HC-H3YF-2UF) in the full feather position > and fully stopped.