Return-Path: Received: from relay01.roc.ny.frontiernet.net ([66.133.131.34] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2918868 for flyrotary@lancaironline.net; Mon, 05 Jan 2004 23:36:16 -0500 Received: (qmail 1651 invoked from network); 6 Jan 2004 04:36:15 -0000 Received: from unknown (HELO frontiernet.net) ([170.215.102.232]) (envelope-sender ) by relay01.roc.ny.frontiernet.net (FrontierMTA 2.3.6) with SMTP for ; 6 Jan 2004 04:36:15 -0000 Message-ID: <3FFA3BD8.F588ED86@frontiernet.net> Date: Mon, 05 Jan 2004 22:38:48 -0600 From: Jim Sower X-Mailer: Mozilla 4.77 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] exhaust heat shield References: Content-Type: multipart/alternative; boundary="------------6F2525D38C34F8B2DCCB32CF" --------------6F2525D38C34F8B2DCCB32CF Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Rusty, I got some stuff from an auto performance place that was sold by the sq yd and looked a little like exhaust wrap tape but lighter and covered with foil. I used some stuff like hi-temp RTV (but much less viscous) to glue it to my glass cowl where the exhaust only has 1/4" or less clearance. Seems to work really well so far. About $60/yd or so. I'll get the particulars from the hangar and send them to you ..... Jim S. 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) -- Jim Sower Crossville, TN; Chapter 5 Long-EZ N83RT, Velocity N4095T --------------6F2525D38C34F8B2DCCB32CF Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Rusty,
I got some stuff from an auto performance place that was sold by the sq yd and looked a little like exhaust wrap tape but lighter and covered with foil. I used some stuff like hi-temp RTV (but much less viscous) to glue it to my glass cowl where the exhaust only has 1/4" or less clearance. Seems to work really well so far. About $60/yd or so.
I'll get the particulars from the hangar and send them to you .... Jim S.

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)

--
Jim Sower
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T
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