X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) From: "Le Roux Breytenbach breytenbachleroux@gmail.com" Received: from mail-ed1-f46.google.com ([209.85.208.46] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1172722 for flyrotary@lancaironline.net; Fri, 29 Jan 2021 14:59:42 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.46; envelope-from=breytenbachleroux@gmail.com Received: by mail-ed1-f46.google.com with SMTP id c6so11992257ede.0 for ; Fri, 29 Jan 2021 11:59:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:in-reply-to:to; bh=tdffCKBGP4hYpCOLaa6aFhR9qLrlFN9MbwKj92baX8c=; b=rLFFwW5PgTmVbmJakTzGAB50NIgTcTX8bjnePtWF6uGurTs0JbStE2+Tw8vHGMyJ5g 5pr1AETQoeF1PDKOsUMjffFg9KDjr3Q/DU30Gfu2Hj56KntbLFBfkUQ7knL4hWuynfUe wH9QqBIZlnv6Ap4MOuemCersDOPuVpoaXdS0cVT6ur0k50UmY1tNBBeczIXFYBlhu+yo 2JPHAgCI+mBECN+/wMSO6/P4MXd+WOiWfdyoo0hf5RyhDEtQDIsBc3bwJtUOwz6l+Xt7 ITTzD7PcccNGeIR+RdHTZlWtSxj66U9a+ArYQKQh3h56miat0p8XGFVIRkxm8BHWTBmE tpoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:in-reply-to:to; bh=tdffCKBGP4hYpCOLaa6aFhR9qLrlFN9MbwKj92baX8c=; b=a434b9L8cDkg4LxmmUKfd0EVMrDNVIgtuAu+MxQgPdHFeG3aytOFuEl5c4BKpypPmx pS5oJ6Bzd4+bnDfX0tJQ4kwC7m9Za+/kEjyO/Y72d0Idh+Zwwwyk9vsKuql00KJM1oQB p0s5iycxhMSWx1Lu3BaEA/HbuLXRK0vB0Nt1C3dNROv6DRibWWk+SrRfjB38wmdeJmcC 2bz0ij/udDeajHAwJ8fuG73QIhQUCficFZBFeZ/AvHMnu9F3bw3z9lzbrZQGNUgxtWTU 2lsT0ZH+5J+QofoPKmkgGG6hFd2EJcM6LLKkTaZMO4FcpoK+iij29+EdOmXGtvi2/f+H LxjQ== X-Gm-Message-State: AOAM532Z7gNlszqNWwilQcP0A3HlUI0jaiKGV2heyL73pwrJuTMDzHxP XSDw4xjxi2NZbi3luMDxcpNB/InNxZDAFw== X-Google-Smtp-Source: ABdhPJw8QcxqITkFOoBynYlFGnicLizMoLCnor8jfVqKHwbVG0Z3gz91pUP2s2HIpKfj5PUUOMBG8g== X-Received: by 2002:aa7:d603:: with SMTP id c3mr6955413edr.337.1611950364341; Fri, 29 Jan 2021 11:59:24 -0800 (PST) Return-Path: Received: from [192.168.1.122] ([160.226.128.22]) by smtp.gmail.com with ESMTPSA id s1sm4348267ejx.25.2021.01.29.11.59.23 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 29 Jan 2021 11:59:23 -0800 (PST) Content-Type: multipart/alternative; boundary=Apple-Mail-7C52D688-FCE0-4565-A6A7-C8A0DF170A0C Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Subject: Ross Farnham - Cooling video Date: Fri, 29 Jan 2021 21:59:21 +0200 Message-Id: <59377BDC-1DCB-4976-B687-15DFB89C0DEC@gmail.com> References: In-Reply-To: To: Rotary motors in aircraft X-Mailer: iPhone Mail (17H35) --Apple-Mail-7C52D688-FCE0-4565-A6A7-C8A0DF170A0C Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Matt: The cowl louvers can create a very effective low pressure in the cowl,= and are very easy to add or implement,without big alterations to the cowl i= tself. The littlebit of =E2=80=9Cfriction drag=E2=80=9D is is so small for the gain= in cooling and looks good too Included photos of Rudi Greylings RV cowl in ZA Ed Anderson also did some side louvers on his RV6A. https://drive.google.com/file/d/1sXXDGRHZDNGqekByKxhAW-EMkMI3D2So/view?usp=3D= drivesdk https://drive.google.com/file/d/1gywUdQ2NaOu_exzSdU5_QVCVseog1rxb/view?usp=3D= drivesdk https://drive.google.com/file/d/1hPh4vWMny0SErLzjPnS_Nt-X0b1zZCUk/view?usp=3D= drivesdk https://drive.google.com/file/d/1QqmvY37DGDpfleyp8HNhwRoz4S9KeeUk/view?usp=3D= drivesdk Le Roux Sent from my iPhone Le Roux Breytenbach=20 > On 29 Jan 2021, at 19:50, Jeff Whaley jwhaley@datacast.com wrote: >=20 > =EF=BB=BFMatt there are airplanes out there with side exit louvers ... the= Beech Craft Bonanza and the Carbon Cub for two examples. There's a guy wit= h a Murphy Moose and an LS3 engine using cowl louver exit exclusively ... he= re's a link to his video ... https://www.youtube.com/watch?v=3DQyiEAcwhirg .= ... > Due to some of my cooling issues, I adapted some louvers into my cowlings l= ast summer ... here is a link to my experimentation video ... https://www.yo= utube.com/watch?v=3DkhG0J6zGVl0 ... >=20 > Jeff > 13B, RD1-C, EC2, 186 hrs >=20 > Le Roux, I have talked with Alex a bunch over exit louvers on the side. We= are hoping to tune the exhaust dumping better to help pull air out of the b= ottom of the cowl. I don't see too many exit louvers though on planes. Any r= eason for it? >=20 >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html --Apple-Mail-7C52D688-FCE0-4565-A6A7-C8A0DF170A0C Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Matt: The cowl louvers can create a very effective low pressure in the c= owl, and are very easy to add or implement,without big alterations to the co= wl itself.
The littlebit of =E2=80=9Cfriction drag=E2= =80=9D is is so small for the gain in cooling and looks good too

Included photos of Rudi Greylings RV c= owl in ZA

Ed Anderson also d= id some side louvers on his RV6A.



=

= Le Roux

<= div>









Sent from my iPhone
Le Roux Breyte= nbach 

On 29 J= an 2021, at 19:50, Jeff Whaley jwhaley@datacast.com <flyrotary@lancaironl= ine.net> wrote:

=EF=BB=BFMatt there are airplanes out there with side exit l= ouvers ... the Beech Craft Bonanza and the Carbon Cub for two examples. &nbs= p;There's a guy with a Murphy Moose and an LS3 engine using cowl louver exit= exclusively ... here's a link to his video ... https://www.youtube.com/watc= h?v=3DQyiEAcwhirg ....
Due to some of my cooling issues, I a= dapted some louvers into my cowlings last summer ... here is a link to my ex= perimentation video ... https://www.youtube.com/watch?v=3DkhG0J6zGVl0 ...

Jeff
13B, RD1-C, EC2, 186 hrs=

Le Roux, I have talked with Alex a bunch o= ver exit louvers on the side. We are hoping to tune the exhaust dumping bett= er to help pull air out of the bottom of the cowl. I don't see too many exit= louvers though on planes. Any reason for it?


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