X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from is1.mum.edu ([69.18.50.66] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2392242 for flyrotary@lancaironline.net; Wed, 17 Oct 2007 15:57:48 -0400 Received-SPF: none receiver=logan.com; client-ip=69.18.50.66; envelope-from=rob@mum.edu Received: from AcerComm1 ([10.10.42.233]) by is1.mum.edu (8.13.3+Sun/8.13.3) with SMTP id l9HJv9Ex009177 for ; Wed, 17 Oct 2007 14:57:10 -0500 (CDT) Message-ID: <016801c810f7$c5d646a0$e92a0a0a@AcerComm1> From: "Rob" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: BellMouth Article Date: Wed, 17 Oct 2007 14:56:14 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Can anyone tell me where to get a bellmouth to attach to my intake manifold which I still have to make for my 20B. Does someone make these ready made or do I have to machine it myself. Robert Robert Bollinger FM1099 MUM Fairfield, IA 52557 rob@mum.edu Home (641)472-7000ex2068 Cell (641)919-3213 ----- Original Message ----- From: "Ernest Christley" To: "Rotary motors in aircraft" Sent: Wednesday, October 17, 2007 2:49 PM Subject: [FlyRotary] Re: BellMouth Article > Dale Rogers wrote: >> In our application, there is less attenuation, but a 1.5 hp increase - >> for just changing a contour in the inlet - is almost "free" power.. >> > I especially liked how the author characterized the different contours. > Just any ol' radius will get you most of the payback, but there are slight > incremental improvements to be had with more manufacturing effort. He > makes it very easy to decide how much work you're willing to invest. > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >