X-Virus-Scanned: clean according to Sophos on Logan.com From: "Stephen Izett" Received: from mail-pd0-f170.google.com ([209.85.192.170] verified) by logan.com (CommuniGate Pro SMTP 6.1c2) with ESMTPS id 7410163 for flyrotary@lancaironline.net; Sun, 11 Jan 2015 17:26:17 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.192.170; envelope-from=steveize@gmail.com Received: by mail-pd0-f170.google.com with SMTP id v10so27204593pde.1 for ; Sun, 11 Jan 2015 14:25:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-type:mime-version:subject:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=zCnjwCOW5y6pvDB0Rj4feYVxEVx0oGyYVj9qEv7cYKY=; b=lTiDsPzPJs+HjYpgk2rU3gzAmcbboaQgqPS2Ycp633CDQ/GPaSgnQgkujtBuEjkt2K If4Vfuf8yz+yZ+u0/uVgh39z0VOaRMHNbOTWqVFL4XxmQHU+jW3rdyx+yb8GrWlP5WS+ GPI1bxfxl/PjbIFuQj0R8OL/GaSbB2d+aSvoZ68aPbg+5/61a0o/LMtlr+ItXgTMGFlc AsQq6lM2X/vYKJbA0VHWw0Q6etN2G3nsBLh4aowavbAlu5PEAohMareC7/7F6FxzgIAn unSO/d6ZiI8t1LQUxH2tQ0xcpDwdhrZBa98or1cDIzDlRQBIW4sI9jqSKG9HC+nvEelz spBQ== X-Received: by 10.66.55.74 with SMTP id q10mr39861202pap.94.1421015143136; Sun, 11 Jan 2015 14:25:43 -0800 (PST) Return-Path: Received: from [10.1.1.4] (124-148-124-121.dyn.iinet.net.au. [124.148.124.121]) by mx.google.com with ESMTPSA id b16sm12587328pdj.76.2015.01.11.14.25.40 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 11 Jan 2015 14:25:42 -0800 (PST) X-Google-Original-From: Stephen Izett Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Subject: Re: [FlyRotary] Re: cowl temps In-Reply-To: Date: Mon, 12 Jan 2015 06:25:37 +0800 Content-Transfer-Encoding: quoted-printable Message-Id: <49E49500-BCF5-433B-A655-666F817460DE@icloud.com> References: To: Rotary motors in aircraft X-Mailer: Apple Mail (2.1993) Thanks people. I suppose i should measure the temps and check against the glass specs, = but perhaps all OK. Steve > On 12 Jan 2015, at 12:53 am, Mark Steitle = wrote: >=20 > Steve, > The cowl on my 3-rotor would get too hot to touch after shutdown. I = coated the area around the exhaust with a layer of Fiberfrax... Problem = solved. Some builders have used aluminum foil to reflect the heat away = from the fiberglass cowl. =20 >=20 > Mark S. >=20 >=20 > Sent from my iPad >=20 >> On Jan 11, 2015, at 7:24 AM, steve Izett = wrote: >>=20 >> Hi Guys >>=20 >> Ive finally got the engine (Renesis) and cowl complete on the = Glasair. >> Now without a prop I can run her (1500rpm, 90 deg F ambient) for = about 10 mins before water temps teach 200 deg F. >> Hoping that with the prop she will keep her cool. >>=20 >> We have sought to protect the inner cowl surfaces from exhaust = radiant heat and this appears to be functioning >> however I=E2=80=99m surprised at the upper cowl external surface = temps after shut down getting to hot to touch. >> What are your experiences of cowl temps after shutdown? >> If air-cooled engines run up to 400 deg F CHT=E2=80=99s how do they = go? >> I take it we all have glass cowls! >>=20 >> Steve Izett >>=20 >>=20 >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html