Return-Path: Received: from rokland5.awh.us ([67.15.10.31] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP-TLS id 608716 for flyrotary@lancaironline.net; Sat, 15 Jan 2005 22:10:53 -0500 Received-SPF: none receiver=logan.com; client-ip=67.15.10.31; envelope-from=bob@bob-white.com Received: from bgp01386375bgs.brodwy01.nm.comcast.net ([68.35.160.229]:33217 helo=quail) by rokland5.awh.us with smtp (Exim 4.43) id 1Cq0o3-0005N7-FF for flyrotary@lancaironline.net; Sat, 15 Jan 2005 21:10:23 -0600 Date: Sat, 15 Jan 2005 20:10:21 -0700 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: stock 4-port exhaust port measurement? Message-Id: <20050115201021.2be913bc.bob@bob-white.com> In-Reply-To: References: X-Mailer: Sylpheed version 1.0.0 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Antivirus-Scanner: Clean mail though you should still use an Antivirus X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - rokland5.awh.us X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - bob-white.com X-Source: X-Source-Args: X-Source-Dir: On Sat, 15 Jan 2005 19:51:37 -0600 "Russell Duffy" <13brv3@bellsouth.net> wrote: > Funny, none of those look like exhaust ports to me :-) Well color me red. I guess I will atribute it to poor reading skills. > > For the record, I am trying very hard to resist messing with the ports > on the RV-3 engine, but I can't promise success :-) Anyone taking bets? I'll bet on messing. > > But now I have a question. What are the little holes below the ports? > There is a round one on the end housings and a square one on the > center housing. > > Well, mine are rectangular on both the front and rear housing, and > larger but still rectangular on the center housing. Since my engine > is in pieces, I can tell you that these holes connect to the round > holes that are below the exhaust ports. My guess would be that these > are channels for exhaust to heat the intake manifold, but I admit that > I don't really know for sure. I'm sure someone here does though. The little holes by the exhaust ports just got blocked off with my exhaust flange so I will assume the intake manifold (still waiting) will block off the ones by the intake ports. > > Cheers, > Rusty (converting from bent mechanical flap handle to electric flaps) > Thanks Rusty, Bob White -- http://www.bob-white.com N93BD - Rotary Powered BD-4 (soon)