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                           Europa-List Digest Archive
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                     Total Messages Posted Thu 06/11/15: 1
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Today's Message Index:
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     1. 07:06 AM - Re: exhaust pipe clearance  (Paul McAllister)
 
 
 
________________________________  Message 1  _____________________________________


Time: 07:06:32 AM PST US
Subject: Re: Europa-List: exhaust pipe clearance
From: Paul McAllister <paul.the.aviator@gmail.com>

Fred, the stuff works okay but the glue doesn't hold up. - Paul

On Wed, Jun 10, 2015 at 2:59 PM, Fred Klein <fklein@orcasonline.com> wrote:

>
> Gentlemenhere=99s a situation and a question:
>
> I have maintained 1.50 inches clearance between the inside surface of my
> lower cowl and my engine exhaust pipes. I set this up w/ the assumption
> that this would be adequate considering that I have used a
> high temperature flame retardant resin (HTR250FR, by Resin Services, Inc.
)
> for my custom cowls. It maintains a =9CFlexural Modulus at 350 degr
ees F. of
> 6.25 x 36,000=9D (whatever that means).
>
> Would anyone be willing to opine on the advisability of applying some
> =9Caluminized, adhesive-backed, heat barrier, to reflect radiant he
at away
> from the cowl surface and back towards the engine and exhaust?
>
> (This so-called =9Cheat barrier=9D is a composite consisting 
of aluminum foil
> on a backing material which looks like burlap to which is applied an
> adhesive good for 350 degrees F.)
>
> (I have a total of 10 sq. in. of inlet and 14 sq. in. of exit area for ai
r
> circulation within the cowl.)
>
> (Obviously, this is not a 9xx Rotax installation.)
>
> Comments and opinions appreciated in advance,
>
> Fred
>
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>
>

 

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