Return-Path: Received: from mail1.mx.voyager.net ([216.93.66.204] verified) by logan.com (CommuniGate Pro SMTP 4.2b8) with ESMTP id 321810 for flyrotary@lancaironline.net; Wed, 14 Jul 2004 20:52:51 -0400 Received-SPF: error receiver=logan.com; client-ip=216.93.66.204; envelope-from=dsbarno@vbe.com Received: from u036fr3za011 (d58.as0.wtma.wi.core.com [64.77.136.186]) by mail1.mx.voyager.net (8.12.9/8.10.2) with SMTP id i6F0qIWH095564 for ; Wed, 14 Jul 2004 20:52:19 -0400 (EDT) Message-ID: <00e901c46a06$b5a73a00$3c40fea9@u036fr3za011> From: "Barnhart" To: Subject: Cowl flaps Date: Wed, 14 Jul 2004 19:57:30 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00E6_01C469DC.CBF6FEA0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 This is a multi-part message in MIME format. ------=_NextPart_000_00E6_01C469DC.CBF6FEA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, Thinking about building cowl flaps, based on worse case scenario, into = the design of the bottom cowl. My oil cooler and radiator are going on = the bottom, side by side, oil on the cool side of the engine. The flaps = going across the bottom would be there all the time, non adjustable. No = thermostat. I'm also planning on putting a way to bleed off air from = the back of the duct work going to the radiators. It would be operated = by a vernier type of control for those days when it gets too cool (when = the skis are on). Also putting a little bit of lip on the bottom of the = cowl where it meets the firewall to help take some of the heat from the = turbo out. With the Drag Queen being a tail dragger it will also allow = air to get out of the front of the cowl openings when on the ground. It = may have more drag to it then what you may want tho.=20 If you or Tom end up with a prop that doesn't work for your fast planes, = let me know. Thinking whatever is the lightest and electric.=20 Can't wait to hear a 20b running. Taking a real flight to Tracy's this = year? Barny MGDQ 20bt ------=_NextPart_000_00E6_01C469DC.CBF6FEA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mark,
 
Thinking about building cowl flaps, = based on worse=20 case scenario,  into the design of the bottom cowl. My oil cooler = and=20 radiator are going on the bottom, side by side, oil on the cool side of = the=20 engine. The flaps going across the bottom would be there all the time, = non=20 adjustable. No thermostat.  I'm also planning on putting a way = to=20 bleed off air from the back of the duct work going to the = radiators. It=20 would be operated by a vernier type of control for those days when it = gets too=20 cool (when the skis are on). Also putting a little bit of lip on = the bottom=20  of the cowl where it meets the firewall to help take some of = the heat=20 from the turbo out. With the Drag Queen being a tail dragger it will = also allow=20 air to get out of the front of the cowl openings when on the ground. It = may have=20 more drag to it then what you may want tho.
 
If you or Tom end up with a prop that = doesn't work=20 for your fast planes, let me know. Thinking whatever is  the = lightest and=20 electric.
 
Can't wait to hear a 20b running. = Taking a real=20 flight to Tracy's this year?
 
 
Barny
MGDQ 20bt
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