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Date: Fri, 2 Oct 2009 05:28:07 -0500
Message-ID: <5cf132c0910020328g40a977c0u5d9543b60ca9a2f7@mail.gmail.com>
Subject: Re: [FlyRotary] Tangential Muffler
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=0015175d026c520a350474f138cd

--0015175d026c520a350474f138cd
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George,

Since I already purchased the inconel, I will go ahead and build it and see
how it holds up.  I think it is thick enough to survive, we'll see.

Mark



On Thu, Oct 1, 2009 at 9:24 PM, Lynn Hanover <lehanover@gmail.com> wrote:

>  Mark,
> Inconel is terrific stuff and expensive and light, but it doesn't last
> long, ask the racing crowd. The heat cycling kills it.
> Stick to SS.
> George ( down under)
>
> The cracking in racing exhaust systems is due to the paper thin sections
> used for light weight. In this picture the box contains the redish rust
> colored mild steel .120" wall bends. The darker colored tubes are Inconel
> with each bend made of two stamped halves welded together. So the walls
> around the bends stay the same thickness as straight sections. They are sold
> for $15.00 per box, used. The complete header set with collector and waste
> gate exhaust is discarded after 3 heat cycles. They are fun to look at, but
> only good for cutting up into shielding or the like. It is easy to weld
> (TIG) with stainless filler rod.
>
> Holds a chrome like polish job until heated.
>
> In very thin wall operates at bright orange with no problems (for three
> heat cycles).
>
> In thicker wall would outlast any stainless.
>
> Works and welds like stainless. The only downside is cost. Just about have
> to get it as surplus or used.
>
> On the right is a used 12-A race engine with a dry sump oil system. Two
> scavenge out fittings in the front cover and a flat plate instead of a oil
> pan.
>
> Lynn E. Hanover
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>

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<div>George, </div>
<div>=A0</div>
<div>Since I already=A0purchased the inconel, I will go ahead and build it =
and see how it holds up.=A0 I think it is thick enough to survive, we&#39;l=
l see.</div>
<div>=A0</div>
<div>Mark</div>
<div><br><br>=A0</div>
<div class=3D"gmail_quote">On Thu, Oct 1, 2009 at 9:24 PM, Lynn Hanover <sp=
an dir=3D"ltr">&lt;<a href=3D"mailto:lehanover@gmail.com">lehanover@gmail.c=
om</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div><font face=3D"Arial" size=3D"2">=A0Mark,</font></div>
<div><font face=3D"Arial" size=3D"2">Inconel is terrific stuff and expensiv=
e and light, but it doesn&#39;t last long, ask the racing crowd. The heat c=
ycling kills it.</font></div>
<div><font face=3D"Arial" size=3D"2">Stick to SS.</font></div>
<div><font face=3D"Arial" size=3D"2">George ( down under)</font></div>
<div>=A0</div>
<div>The cracking in racing exhaust systems is due to the paper thin sectio=
ns used for light weight. In this picture the box contains the redish rust =
colored mild steel .120&quot; wall bends. The darker colored tubes are Inco=
nel with each bend made of two stamped halves welded together. So the walls=
 around the bends stay the same thickness as straight sections. They are so=
ld for $15.00 per box, used. The complete header set with collector and was=
te gate exhaust is discarded after 3 heat cycles. They are fun to look at, =
but only good for cutting up into shielding or the like. It is easy to weld=
 (TIG) with stainless filler rod.</div>

<div>=A0</div>
<div>Holds a chrome like polish job until heated.</div>
<div>=A0</div>
<div>In very thin wall operates at bright orange with no problems (for thre=
e heat cycles).</div>
<div>=A0</div>
<div>In thicker wall would outlast any stainless.=A0</div>
<div>=A0</div>
<div>Works and welds like stainless. The only downside is cost. Just about =
have to get it as surplus or used.</div>
<div>=A0</div>
<div>On the right is a used 12-A race engine with a dry sump oil system. Tw=
o scavenge out fittings in the front cover and a flat plate=A0instead of a =
oil pan.=A0</div>
<div>=A0</div>
<div>Lynn E. Hanover=A0</div><br>--<br>Homepage: =A0<a href=3D"http://www.f=
lyrotary.com/" target=3D"_blank">http://www.flyrotary.com/</a><br>Archive a=
nd UnSub: =A0 <a href=3D"http://mail.lancaironline.net:81/lists/flyrotary/L=
ist.html" target=3D"_blank">http://mail.lancaironline.net:81/lists/flyrotar=
y/List.html</a><br>
<br></blockquote></div><br>

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