Return-Path: Received: from out010.verizon.net ([206.46.170.133] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2918793 for flyrotary@lancaironline.net; Mon, 05 Jan 2004 22:42:29 -0500 Received: from netzero.net ([4.4.60.55]) by out010.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20040106034228.JHWP18505.out010.verizon.net@netzero.net> for ; Mon, 5 Jan 2004 21:42:28 -0600 Message-ID: <3FFA2EA2.2000804@netzero.net> Date: Mon, 05 Jan 2004 22:42:26 -0500 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax; PROMO) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] exhaust heat shield References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------080103030905070109090207" X-Authentication-Info: Submitted using SMTP AUTH at out010.verizon.net from [4.4.60.55] at Mon, 5 Jan 2004 21:42:28 -0600 This is a multi-part message in MIME format. --------------080103030905070109090207 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Where my exhaust headers pass close to engine mount tubes, I've wrapped them (mount tubes) with stainless steel foil (called "shim stock" or "shim stock in a can" in MSC's catalog). Finn Russell Duffy wrote: > Greetings, > > I'm looking into the best methods for heat shielding around the > exhaust pipes. I'll be squeezing pipes between the engine mount tube, > and cowl, with just less than an inch to clear on either side. The > closest clearance will be about 12"-14" from the exhaust port, so it > will still be pretty hot. > > In the previous messages about turbo heat shielding, I learned that > some folks are using aluminum foil, or the commercial temp shielding > on the inside of their cowls with good results. How close are your > pipes to the cowl? Will simple aluminum foil protect the cowl from > the exhaust pipe just an inch away? > > How about the mount tube? I had the stock turbo shield on the rev-1 > setup, and there was about an inch or so of clearance from the heat > shield, to the motor mount tube. I also wrapped the mount tube with > fire sleeve. When I took it all apart, the fire sleeve appeared > undamaged on the outside, but the inside was burnt, as was the paint > on the mount tube. I'm wondering if it wouldn't have been better > without the fire sleeve, so it would have had some airflow. I've seen > the silver heat tape, that can be used to wrap the mount. Will this > type of material be sufficient? > > Thanks, > Rusty (Great alcohol report Jim) --------------080103030905070109090207 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Where my exhaust headers pass close to engine mount tubes, I've wrapped them (mount tubes) with stainless steel foil (called "shim stock" or "shim stock in a can" in MSC's catalog).

Finn

Russell Duffy wrote:

Message
Greetings,

I'm looking into the best methods for heat shielding around the exhaust pipes. I'll be squeezing pipes between the engine mount tube, and cowl, with just less than an inch to clear on either side.   The closest clearance will be about 12"-14" from the exhaust port, so it will still be pretty hot.

In the previous messages about turbo heat shielding, I learned that some folks are using aluminum foil, or the commercial temp shielding on the inside of their cowls with good results. How close are your pipes to the cowl?  Will simple aluminum foil protect the cowl from the exhaust pipe just an inch away?

How about the mount tube? I had the stock turbo shield on the rev-1 setup, and there was about an inch or so of clearance from the heat shield, to the motor mount tube. I also wrapped the mount tube with fire sleeve. When I took it all apart, the fire sleeve appeared undamaged on the outside, but the inside was burnt, as was the paint on the mount tube. I'm wondering if it wouldn't have been better without the fire sleeve, so it would have had some airflow.  I've seen the silver heat tape, that can be used to wrap the mount. Will this type of material be sufficient?

Thanks,

Rusty (Great alcohol report Jim)

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