X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from rtp-iport-1.cisco.com ([64.102.122.148] verified) by logan.com (CommuniGate Pro SMTP 5.0) with ESMTP id 811976 for flyrotary@lancaironline.net; Wed, 02 Nov 2005 11:51:25 -0500 Received-SPF: softfail receiver=logan.com; client-ip=64.102.122.148; envelope-from=echristley@nc.rr.com Received: from rtp-core-2.cisco.com ([64.102.124.13]) by rtp-iport-1.cisco.com with ESMTP; 02 Nov 2005 08:50:40 -0800 X-BrightmailFiltered: true X-Brightmail-Tracker: AAAAAA== X-IronPort-AV: i="3.97,282,1125903600"; d="scan'208"; a="14404859:sNHT24872396" Received: from xbh-rtp-201.amer.cisco.com (xbh-rtp-201.cisco.com [64.102.31.12]) by rtp-core-2.cisco.com (8.12.10/8.12.6) with ESMTP id jA2GoZJW000618 for ; Wed, 2 Nov 2005 11:50:38 -0500 (EST) Received: from xfe-rtp-202.amer.cisco.com ([64.102.31.21]) by xbh-rtp-201.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.211); Wed, 2 Nov 2005 11:50:33 -0500 Received: from [64.102.45.251] ([64.102.45.251]) by xfe-rtp-202.amer.cisco.com with Microsoft SMTPSVC(6.0.3790.211); Wed, 2 Nov 2005 11:50:33 -0500 Message-ID: <4368EE59.6010506@nc.rr.com> Date: Wed, 02 Nov 2005 11:50:33 -0500 From: Ernest Christley Reply-To: echristley@nc.rr.com User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Richard Sohn's housings References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 02 Nov 2005 16:50:33.0745 (UTC) FILETIME=[8AA78010:01C5DFCD] Russell Duffy wrote: > There are a few planes that can accept a single rotor as is, but I > think we're going to need aluminum housings to ever make it into the > mainstream. I had always hoped Racing Beat would finally get theirs > done, but I've all but given up hope on them now. > Richard said during his presentation that aluminum housings would not be appropriate for a dual rotor. There just isn't enough material to stabilize the stationary gear was how I understood the explanation (someone please correct me if I got that wrong). It may be that Racing Beat has had their production schedule held up by the laws of physics. It's a real shame, though. Aluminum housing could push the installed rotary's power to weight ratio into the vicinity of .75. At that point, builder's would be falling over themselves to convert, and my own CG concerns would disappear. -- ,|"|"|, | ----===<{{(oQo)}}>===---- Dyke Delta | o| d |o www.ernest.isa-geek.org |