Return-Path: Received: from [216.211.128.10] (HELO incoming.adhost.com) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 552987 for flyrotary@lancaironline.net; Wed, 01 Dec 2004 16:35:47 -0500 Received-SPF: none receiver=logan.com; client-ip=216.211.128.10; envelope-from=JoeH@PilgrimTech.com Received: from pilgrim9 (cfserva01.msn.com [207.46.238.136]) by incoming.adhost.com (Postfix) with ESMTP id 45190CF45E for ; Wed, 1 Dec 2004 13:35:14 -0800 (PST) (envelope-from JoeH@PilgrimTech.com) Reply-To: From: "Joe Hull" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: New Muffler Design Date: Wed, 1 Dec 2004 13:35:14 -0800 Organization: Pilgrim Technologies MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 In-reply-to: Thread-Index: AcTX6ZMwM7m0Bh25QQm9in4fC+1C0gAAX90Q Message-Id: <20041201213514.45190CF45E@incoming.adhost.com> Ed - Did you consider putting the discs in at an angle instead of perpendicular to the longitudinal direction? I've wondered whether having baffles at angles wouldn't increase the chaos of waves - i.e. increase attenuation/cancellation. Maybe even a tube where baffles are inserted from alternate sides. E.g. ----------------------------- / / / / / / ----------------------------- Joe Hull Bellevue (Seattle), Washington Cozy MkIV #991 (working on Engine & Electrical & Finishing) http://www.maddyhome.com/canardpages/pages/JoeHull/index.html