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To: flyrotary@lancaironline.net
Subject: Re: [FlyRotary] Re: Burns Stainless Drag Muffler
Date: Sat, 10 Nov 2007 09:56:31 -0500
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I planned on wrapping the entire exhaust system to keep the heat put of the engine compartment. You think thats a bad plan?

Bob Mears
Supermarine Spitfire


-----Original Message-----
From: Lehanover@aol.com
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, 9 Nov 2007 8:18 pm
Subject: [FlyRotary] Re: Burns Stainless Drag Muffler




In a message dated 11/9/2007 6:24:41 P.M. Eastern Standard Time, bmears9413@aol.com writes:

I was told that inconel is what was used in jet engines to take the heat. It was the only thing that would take the heat and not crack. I hope thats correct, cause I reached real deep in my pockets to insure I was doing the right thing for my application. Gonna be a real pisser if it cracks! Expecially if I go down in flames!

Bob Mears
Supermarine Spitfire





Those hot section vanes have N-2 compressor air pumping through them to extend their life spans. They do crack, and in some cases the crack can be ignored if there is only one. Or, a single vane or some number of vanes can be replaced Or a nick can be filed down and polished. Total hours between hot section checks and the number of starts must be recorded. But crack they do.................

?

A little cooling air on the exhaust system is a good idea. On the dyno those things glow a bright orange and heat up anything in a line of sight. Shielding is a must. A thick walled stainless tube covered in heat wrap gets the job done and the lack of under-hood heat is amazing.

?

Lynn E. Hanover




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I planned on wrapping the entire exhaust system to keep the heat put of the engine compartment. You think thats a bad plan?<br>
<br>
Bob Mears<br>
Supermarine Spitfire<br>
<br>
<br>
-----Original Message-----<br>
From: Lehanover@aol.com<br>
To: Rotary motors in aircraft &lt;flyrotary@lancaironline.net&gt;<br>
Sent: Fri, 9 Nov 2007 8:18 pm<br>
Subject: [FlyRotary] Re: Burns Stainless Drag Muffler<br>
<br>


<div id=AOLMsgPart_2_357e1b66-7680-4bed-b38d-384549e9679b><FONT id=role_document face=Arial color=#000000 size=2>

<div>

<div>In a message dated 11/9/2007 6:24:41 P.M. Eastern Standard Time, <A href="mailto:bmears9413@aol.com">bmears9413@aol.com</A> writes:</div>

<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>I was told that inconel is what was used in jet engines to take the heat. It was the only thing that would take the heat and not crack. I hope thats correct, cause I reached real deep in my pockets to insure I was doing the right thing for my application. Gonna be a real pisser if it cracks! Expecially if I go down in flames!<br>
<br>
Bob Mears<br>
Supermarine Spitfire<br>
</FONT></BLOCKQUOTE></div>


<div></div>


<div>Those hot section vanes have N-2 compressor air pumping through them to extend their life spans. They do crack, and in some cases the crack can be ignored if there is only one. Or, a single vane or some number of vanes can be replaced Or a nick can be filed down and polished. Total hours between hot section checks and the number of starts must be recorded. But crack they do.................</div>


<div>&nbsp;</div>


<div>A little cooling air on the exhaust system is a good idea. On the dyno those things glow a bright orange and heat up anything in a line of sight. Shielding is a must. A thick walled stainless tube covered in heat wrap gets the job done and the lack of under-hood heat is amazing.</div>


<div>&nbsp;</div>


<div>Lynn E. Hanover</div>
</FONT><br>
<br>
<br>


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