Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.2b8) with ESMTP id 320530 for flyrotary@lancaironline.net; Tue, 13 Jul 2004 23:34:53 -0400 Received-SPF: error receiver=logan.com; client-ip=204.127.202.64; envelope-from=n3773@comcast.net Received: from rv8 (c-24-21-140-241.client.comcast.net[24.21.140.241]) by comcast.net (sccrmhc13) with SMTP id <2004071403342301600bc5hre> (Authid: n3773@comcast.net); Wed, 14 Jul 2004 03:34:23 +0000 Message-ID: <011401c46953$734ec280$f18c1518@rv8> Reply-To: "kevin lane" From: "kevin lane" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: New Scoop Date: Tue, 13 Jul 2004 20:34:18 -0700 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 6.00.2800.1158 x-mimeole: Produced By Microsoft MimeOLE V6.00.2800.1165 I don't know if the photos represent the final plenum wall shape, but the right angle on the inside of the curve is very inefficient, as far as everything I've read. it will create much turbulence and lower its effectiveness. I also don't see others using just a simple radius to turn corners. this, of course, based on my eyeball engineering degree, from the school of hard knocks :-) Kevin Lane Portland, OR e-mail-> n3773@comcast.net web-> http://home.comcast.net/~n3773 (browse w/ internet explorer)