X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.253] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3757962 for flyrotary@lancaironline.net; Tue, 14 Jul 2009 22:00:14 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.253; envelope-from=bhughes@qnsi.net Return-Receipt-To: "Bobby J. Hughes" Subject: RE: [BULK] [FlyRotary] Intake velocity stack lengths MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Date: Tue, 14 Jul 2009 21:01:42 -0600 Disposition-Notification-To: "Bobby J. Hughes" Content-class: urn:content-classes:message Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F315E6B0@qnsi-mail.qnsi.net> X-MS-Has-Attach: X-MimeOLE: Produced By Microsoft Exchange V6.5 X-MS-TNEF-Correlator: Thread-Topic: [BULK] [FlyRotary] Intake velocity stack lengths Thread-Index: AcoE9QBsr3NOY5foQiqtnFNmE05OJwAAt4kg References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" Ben, I purchased 4 stack from this company in Australia for my first manifold attempt. They will spin any size you want. It took about 3 weeks for the parts to arrive and the price is right.=20 http://www.velocity-of-sound.com/velocity_of_sound/velocity_stacks.htm Bobby Hughes (working on new exhaust) -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ben Schneider Sent: Tuesday, July 14, 2009 7:33 PM To: Rotary motors in aircraft Subject: [BULK] [FlyRotary] Intake velocity stack lengths Importance: Low Fellows, I have been thinking up this crazy idea of trying to make intake runner tubes out of carbon fiber. My question is regarding length of the velocity stack. Does the length make a difference? Could a velocity stack be more or less the entire length of the tube? Meaning, if I have a 12" intake tube, could the entire length of the tube be a gradual taper to the diameter of the block opening? Would that mess with the speed the air is traveling in the tube? Aerodynamics is not something I have a very good handle on, and am hoping someone out there in Fly Rotary land can shed some light. Toughts??? BTW, Any reasons why carbon fiber should not be used for intake tubes? May make the velocity tubes a mute point. Thanks for any thoughts. Ben Schneider P.S. Any Fly Rotary fellows going to OSH??? Perhaps a lunch one day or something. -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html Checked by AVG - www.avg.com Version: 8.5.374 / Virus Database: 270.13.13/2237 - Release Date: 07/14/09 18:03:00