X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [207.189.223.49] (HELO email3.peakpeak.com) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTPS id 980190 for flyrotary@lancaironline.net; Wed, 01 Jun 2005 03:08:28 -0400 Received-SPF: none receiver=logan.com; client-ip=207.189.223.49; envelope-from=billdube@killacycle.com Received: (qmail 26328 invoked by uid 513); 1 Jun 2005 07:10:25 -0000 Received: from 207.189.221.125 by email3 (envelope-from , uid 504) with qmail-scanner-1.23 (clamscan: 0.83 Clear:RC:1(207.189.221.125):. Processed in 0.583197 secs); 01 Jun 2005 07:10:25 -0000 Received: from 125-221-189-207.dyn.peakpeak.com (HELO tigger.killacycle.com) ([207.189.221.125]) (envelope-sender ) by email3.peakpeak.com (qmail-ldap-1.03) with SMTP for ; 1 Jun 2005 07:10:25 -0000 Message-Id: <4.3.1.0.20050531233235.01c431e8@mail.chisp.net> X-Sender: billdube@mail.chisp.net X-Mailer: QUALCOMM Windows Eudora Version 4.3.1 Date: Tue, 31 May 2005 23:44:15 -0600 To: "Rotary motors in aircraft" From: "BillDube@killacycle.com" Subject: Re: [FlyRotary] Re: RX-8 6 port Intake - Like, complicated.... In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed At 12:15 AM 5/31/2005, you wrote: >Bill, >There is some one currently tuning a 2" intake - I think 16" may be a little >short. I measured much more carefully just now. (It isn't easy to measure length because the tubes are all tightly curved in three dimensions.) The primary runners are about 14 inches long and 1.18" ID. The secondary runners join together at the 12 inch mark and then join with the main intake at the 19 inch length. The secondary runners are approximately 1.18" ID (I can't get deep enough to measure exactly. The 7" long common duct for the secondary runners is a pair of ovals that measure 2.525" x 1.16". This may seem short, but keep in mind that the red lined is over 9000 RPM and the peak HP occurs at 8700 RPM. Bill Dube http://www.killacycle.com/Lights.htm