Mailing List lml@lancaironline.net Message #46793
From: Rod Pharis <rpharis@teamimc.com>
Sender: <marv@lancaironline.net>
Subject: RE: [LML] Re: legacy exhaust heat shield option
Date: Thu, 10 Apr 2008 01:11:01 -0400
To: <lml@lancaironline.net>
It's an issue of burning the paint aft of the existing insulation blanket and above the exhaust tip.  Also, the strength of a carbon composite structural panel is reduced while at elevated temperatures.
 
Rod
-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of Alan Adamson
Sent: Tuesday, April 08, 2008 10:23 AM
To: lml@lancaironline.net
Subject: [LML] Re: legacy exhaust heat shield option

I guess I'm confused, isn't the issue one of not the material, but more so stopping the darkening of the paint, and associated exhaust stain... And isn't that why people where interested in the stainless version?  After all, this isn't a *heat* isolation issue, the blanket does that quite nicely.  It's all about looks and keeping the looks perfect.  I know of no way to do that with another composite piece.  It's either metal or nothing to resolve the primary issue that most are trying to address with the Legacy exhaust tunnels...
 
Or do I have it all wrong?
 
Alan


From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of larry.eversmeyer@faa.gov
Sent: Monday, April 07, 2008 9:04 PM
To: lml@lancaironline.net
Subject: [LML] Re: legacy exhaust heat shield option


2.       How many of you would be interested in carbon carbon exhaust heat shields instead of the stainless steel?  I assume you are referring to where the exhaust comes out in the back of the cowling and below the fuselage.  I would be interested in a set.  Still building

Larry Eversmeyer


"Russell" <N2AA@bellsouth.net>
Sent by: "Lancair Mailing List" <lml@lancaironline.net>

04/04/2008 09:00 PM

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[LML] legacy exhaust heat shield option





I have been doing some investigation and found that it is probable to manufacture exhaust heat shields out of Carbon Carbon. What I like to know who is the following.
 
1.       Does someone have a flying legacy and is willing to help with some data that we need.  I would be happy to compensate you for your time.
2.       How many of you would be interested in carbon carbon exhaust heat shields instead of the stainless steel?
 
Once we obtain the data I need from a flying legacy and confirm the numbers for the temperature ranges.  The production could start very shortly.
 
Russell
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