X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp111.sbc.mail.mud.yahoo.com ([68.142.198.210] verified) by logan.com (CommuniGate Pro SMTP 5.2.15) with SMTP id 3782991 for flyrotary@lancaironline.net; Mon, 27 Jul 2009 20:23:00 -0400 Received-SPF: neutral receiver=logan.com; client-ip=68.142.198.210; envelope-from=ceengland@bellsouth.net Received: (qmail 54402 invoked from network); 28 Jul 2009 00:22:25 -0000 Received: from unknown (HELO ?192.168.10.7?) (ceengland@72.147.216.75 with plain) by smtp111.sbc.mail.mud.yahoo.com with SMTP; 28 Jul 2009 00:22:25 -0000 X-YMail-OSG: LHhbPRQVM1nGAxuvUMF.A_oRw91vnHpKnrE6dk6hl2MEJP.HgWkcRkpANFdBXxs3h94OrPCFl97tR7UjAIGjUEDg6OZW2.3kxAkW484v3jBx5BtsyjkIZpc_ainNF_KuJynXXHxc7XA58e0SYD0NTwsUhLvIfm9uzvjOPHLNn24WbfHhU5APlGfOalT8j4s5qhAQydjMq2aQUELSgnf2jsf8ngMDRHKkf51KzA6aFmNI2zlelr3tg2JW.NJnmEpRHWMJTfXuNyCoMEhOEhVP97qJoH2jZvW3Sl7z7MgrVs1YlD5RHJH1 X-Yahoo-Newman-Property: ymail-3 Message-ID: <4A6E44C2.401@bellsouth.net> Date: Mon, 27 Jul 2009 19:22:26 -0500 From: Charlie England User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Intake velocity stack length / intake material References: <4A691F02.7080909@bellsouth.net> In-Reply-To: <4A691F02.7080909@bellsouth.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Charlie England wrote: > Ben Schneider wrote: >> Dennis. >> >> I was looking forward to seeing your improvements at Oshkosh this >> year, sorry to hear you won't be there. I am thinking I may make an >> intake very similar to Tracy's just carbon fiber instead of aluminum. >> I need to do a little more research before I jump into this. Would >> you happen to have ever taken an under cowl temp measurement in the >> vicinity of the intake? I need to figure out what kind of sustained >> temp it needs to endure. I have my exhaust Jet Hot coated inside and >> out (supposed to reduce surface temps as much as 65%) though I think >> some of this is just advertising propaganda. We'll see. I also intend >> to put a reflective shield between the intake and exhaust. So I am >> really just trying to figure out the air temp there. >> >> Thanks. >> >> Ben > > I don't know exactly how to quantify this, but the -Eze builders were > making cooling baffles (screwed directly to the heads of Lyc/Conts) > out of fiberglass over 20 years ago, when exotic high temp epoxies > weren't available to homebuilders. I guess you have to decide whether > the abundance of cooling air or direct contact with a 350+degree > cylinder head is more significant in affecting the -glass. > > Charlie > Ben, I just stumbled upon this link on the yahoo group dedicated to RWS controllers. Scroll down to see the uncowled engine. http://www.samhoskins.blogspot.com/ Charlie (If you're at OSH, tell 'em hi if my name comes up.)