Return-Path: Received: from envelope.rose-hulman.edu ([137.112.8.21] verified) by logan.com (CommuniGate Pro SMTP 4.2b3) with ESMTP-TLS id 86377 for flyrotary@lancaironline.net; Sun, 23 May 2004 22:01:56 -0400 Received: from madsena (dhcp024-160-213-196.ma.rr.com [24.160.213.196]) (authenticated (0 bits)) by envelope.rose-hulman.edu (8.11.6/8.11.6) with ESMTP id i4O21jL05625 (using TLSv1/SSLv3 with cipher RC4-MD5 (128 bits) verified NO) for ; Sun, 23 May 2004 21:01:54 -0500 (EST) From: "Alex Madsen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Two problems solved, 2 more pop up... Date: Sun, 23 May 2004 21:00:56 -0500 Message-ID: <000601c44132$fa816210$f166fea9@madsena> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C44109.11AB5A10" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C44109.11AB5A10 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Speaking of exhaust radiation, has anyone tried painting there exhaust manifold black with a high temperature paint (stove blacking). This would greatly increase the metals ability to radiate energy. This should keep the metal much cooler allowing for use thinner and lower temperature steels. The down side is that there would be more heat radiated in side the cowl. However, I think this would be a small price to pay for dropping the manifold temp a few hundred degrees. I all crunch the numbers on this when I get the time. Alex Madsen -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bulent Aliev Sent: Sunday, May 23, 2004 7:12 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Two problems solved, 2 more pop up... On 5/23/04 7:54 PM, "Ed Anderson" wrote: ----- Original Message ----- From: Bulent Aliev To: Rotary motors in aircraft Sent: Sunday, May 23, 2004 2:41 PM Subject: [FlyRotary] Re: Two problems solved, 2 more pop up... On 5/23/04 11:49 AM, "Alex Madsen" wrote: I would try aluminum tape for radiation shedding of the turbo after shutdown. Just apply it to the cowl wherever you want some shielding. It is sold in almost any hardware, and is designed for high temps. Aluminum tape alone will not do it. You should get Fiberfax from Spruce and glue the FF to the cowling than the Aluminum (or better stainless) to the Fiberfax. The Stainless will reflect the heat and the FF will insulate the skin from the heat. Bulent While Fiberfax sounds like an ideal material for such a problem, let me caution you about it. I also attempted to use Fiberfax to insulate my lower cowl from the header pipes. I soon removed it because it was fragile and tore easily, but more importantly it absorbed oil like a sponge. I could just see it sitting there oil soaked waiting for the right combustion event. I removed it and found that aluminum foil worked just fine and was much cheaper and less fire prone. As long as you are not applying the aluminum foil to the headers or turbo pipes them selves, it will work nicely. Now, if you are going to wrap it around a turbo or header then I agree it will not stand up to the temp/heat. But, unless you are going to forever have an oil free engine compartment I caution against fiberfax unless you somehow incase it so oil drippings will not be absorbed by it. FWIW Ed Anderson Having self adhesive aluminum foil close to the red hot turbo it will melt the adhesive. Also if you are getting oil in this area, you are in trouble already. I agree fiberfax is brittle, but they also have other insulators that will work. Bulent ------=_NextPart_000_0007_01C44109.11AB5A10 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Re: Two problems solved, 2 more pop up...

Speaking of exhaust radiation, has = anyone tried painting there exhaust manifold black with a high temperature paint = (stove blacking). This would greatly increase the metals ability to radiate = energy.  This should keep the metal much = cooler allowing for use thinner and lower temperature steels. The down side is that = there would be more heat radiated in side the cowl. However, I think this would be a = small price to pay for dropping the manifold temp a few hundred degrees. I all = crunch the numbers on this when I get the time.

 

Alex Madsen =

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bulent Aliev
Sent: = Sunday, May 23, = 2004 7:12 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = Two problems solved, 2 more pop up...

 

On 5/23/04 7:54 PM, "Ed Anderson" <eanderson@carolina.rr.com> wrote:


 


----- Original Message -----
 
From:  Bulent =  Aliev <mailto:atlasyts@bellsouth.net&= gt;  
 
To: Rotary motors in = aircraft <mailto:flyrotary@lancairo= nline.net>  
 
Sent: Sunday, May 23, = 2004 2:41 PM
 
Subject: [FlyRotary] Re: = Two problems  solved, 2 more pop up...
 

On 5/23/04  11:49 AM, "Alex Madsen" <madsena@rose-hulman.edu>  wrote:

 

I would try = aluminum tape for radiation shedding of the turbo  after shutdown. Just apply it = to the cowl wherever you want some shielding.   It is sold in almost = any hardware, and is designed for high temps.  
 


Aluminum tape alone will  not do it. You should get Fiberfax from = Spruce and glue the FF to the cowling  than the Aluminum (or better = stainless) to the Fiberfax. The Stainless will  reflect the heat and the FF will insulate the skin from the  heat.
Bulent

While Fiberfax  sounds like an ideal = material for such a problem, let me caution you about  it.  I also = attempted to use Fiberfax to insulate my lower cowl from the  header pipes. =  I soon removed it because it was fragile and tore easily,  but more importantly it absorbed oil like a sponge.  I could just  see = it sitting there oil soaked waiting for the right combustion event. =   

 
 
I removed it and found that aluminum foil = worked just  fine and was much cheaper and less fire prone.  As long = as you are not  applying the aluminum foil to the headers or turbo pipes = them selves, it will  work nicely.  Now, if you are going to wrap = it around a turbo or header  then I agree it will not stand up to the temp/heat.   

 
 
But, unless you are going to forever have = an oil free  engine compartment I caution against fiberfax unless you = somehow incase it so  oil drippings will not be absorbed by it.

 
 
FWIW

 
 
Ed Anderson

 

Having self adhesive = aluminum foil close to the red hot turbo it will melt the adhesive. Also if you are = getting oil in this area, you are in trouble already. I agree fiberfax is = brittle, but they also have other insulators that will work.
Bulent

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