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Date: Thu, 13 Aug 2009 14:09:48 -0400
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Message-ID: <1b4b137c0908131109y6a80705av45f3383e7cb423cd@mail.gmail.com>
Subject: Re: [FlyRotary] Moving muffler to belly
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Mine is less than 1" from the belly to keep it in the turbulent slipstream
behind the cooling exit and avoid drag.  A .007" thick piece of SS heat
shield is riveted to the belly in this area.  The SS expands when heated and
creates its own airgap for insulation.

Tracy

On Thu, Aug 13, 2009 at 10:08 AM, Bobby J. Hughes <bhughes@qnsi.net> wrote:

>  I've had the plane down for a few weeks making several changes. I would
> like to move my muffler out of the cowl to the airframe belly. How much
> space should I leave between the top of the muffler and bottom skin? My exit
> fairing hangs down about 5" below the airframe. What have others done for
> heat shielding \ paint protection? Since the floor pans are installed any
> riveting will have to be with blind rivets. Don't really want to put a bunch
> of extra holes in the skin for this experiment. Any advice or pictures would
> be appreciated.
>
> Thanks,
>
> Bobby Hughes
> RV-10
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>

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Mine is less than 1&quot; from the belly to keep it in the turbulent slipst=
ream behind the cooling exit and avoid drag.=A0 A .007&quot; thick piece of=
 SS heat shield is riveted to the belly in this area.=A0 The SS expands whe=
n heated and creates its own airgap for insulation.<br>
<br>Tracy=A0 <br><br><div class=3D"gmail_quote">On Thu, Aug 13, 2009 at 10:=
08 AM, Bobby J. Hughes <span dir=3D"ltr">&lt;<a href=3D"mailto:bhughes@qnsi=
.net">bhughes@qnsi.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_=
quote" style=3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt =
0pt 0.8ex; padding-left: 1ex;">




<div>
<div><font size=3D"2" face=3D"Arial"><span>I&#39;ve had the plane=20
down for a few weeks making several changes. I would like to move my muffle=
r out=20
of the cowl to the airframe belly. How much space should I leave between th=
e top=20
of the muffler and bottom skin? My exit fairing hangs down about 5&quot; be=
low the=20
airframe. What have others done for heat shielding \ paint=20
protection?=A0Since the floor pans are installed any riveting will have to =
be=20
with blind rivets. Don&#39;t really want to put a bunch of extra holes in t=
he skin=20
for this experiment. Any advice=A0or pictures would be=20
appreciated.</span></font></div>
<div><font size=3D"2" face=3D"Arial"><span></span></font>=A0</div>
<div><font size=3D"2" face=3D"Arial"><span>Thanks,</span></font></div>
<div><font size=3D"2" face=3D"Arial"><span></span></font>=A0</div>
<div><font size=3D"2" face=3D"Arial"><span>Bobby=20
Hughes</span></font></div>
<div><font size=3D"2" face=3D"Arial"><span>RV-10</span></font></div></div>
<br>--<br>
Homepage: =A0<a href=3D"http://www.flyrotary.com/" target=3D"_blank">http:/=
/www.flyrotary.com/</a><br>
Archive and UnSub: =A0 <a href=3D"http://mail.lancaironline.net:81/lists/fl=
yrotary/List.html" target=3D"_blank">http://mail.lancaironline.net:81/lists=
/flyrotary/List.html</a><br>
<br></blockquote></div><br>

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