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Message-ID: <m2v5cf132c1004090846s4a23e1b6x9aea9bfed4e41288@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=0016e64c2a04099f870483cfb4e2

--0016e64c2a04099f870483cfb4e2
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Al,

The slotted tube exits through the aft end of the muffler.  It is 2-1/2" th=
e
whole way.  I slotted it after I was unable to drill holes through the SS.
 Cutting 1" slits was very easy.  After making the cuts, I took a hammer an=
d
chisel and made a "V" shaped indent on one side of the cut to increase the
exit area provided by each cut and to encourage the exhaust gasses to flow
toward the exit.  Seems to be working.  I'll take some sound measurements a
little later on.

Mark

On Fri, Apr 9, 2010 at 11:13 AM, Al Gietzen <ALVentures@cox.net> wrote:

>   I should make it clear that my tangential muffler uses a slotted tube
> that runs down through the length of the 5" tube.  This tube is also inco=
nel
> and is welded to both ends, thereby adding strength to the flat ends.  I
> utilized Lynn's coupling design to allow for movement between the muffler
> and the engine.
>
>
>
> Mark;
>
> This is interesting.  Would you care to give a bit more info =96 or perha=
ps
> provide a sketch? Where is the exit from the muffler? Does the exhaust ex=
it
> through the slotted tube? How big is the tube?
>
>
>
> Al
>

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Al,=A0<div><br></div><div>The slotted tube exits through the aft end of the=
 muffler. =A0It is 2-1/2&quot; the whole way. =A0I slotted it after I was u=
nable to drill holes through the SS. =A0Cutting 1&quot; slits was very easy=
. =A0After making the cuts, I took a hammer and chisel and made a &quot;V&q=
uot; shaped indent on one side of the cut to increase the exit area provide=
d by each cut and to encourage the exhaust gasses to flow toward the exit. =
=A0Seems to be working. =A0I&#39;ll take some sound measurements a little l=
ater on.</div>
<div><br></div><div>Mark<br><br><div class=3D"gmail_quote">On Fri, Apr 9, 2=
010 at 11:13 AM, Al Gietzen <span dir=3D"ltr">&lt;<a href=3D"mailto:ALVentu=
res@cox.net">ALVentures@cox.net</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex;">












<div lang=3D"EN-US" link=3D"blue" vlink=3D"blue">

<div>

<div>

<p class=3D"MsoNormal" style=3D"margin-left:.5in"><font size=3D"3" face=3D"=
Times New Roman"><span style=3D"font-size:12.0pt">I should make it clear th=
at my tangential muffler uses
a slotted tube that runs down through the length of the 5&quot; tube.
=A0This tube is also inconel and is welded to both ends, thereby adding
strength to the flat ends. =A0I utilized </span></font>Lynn&#39;s coupling
design to allow for movement between the muffler and the engine. =A0</p>

</div>

<div>

<p class=3D"MsoNormal" style=3D"margin-left:.5in"><font size=3D"3" face=3D"=
Times New Roman"><span style=3D"font-size:12.0pt">=A0</span></font></p>

</div>

<div>

<p class=3D"MsoNormal"><font size=3D"3" color=3D"blue" face=3D"Times New Ro=
man"><span style=3D"font-size:12.0pt;color:blue">Mark;</span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" color=3D"blue" face=3D"Verdana"><sp=
an style=3D"font-size:11.0pt;font-family:Verdana;color:blue">This is intere=
sting.=A0 Would you
care to give a bit more </span></font><font size=3D"2" color=3D"blue" face=
=3D"Verdana"><span style=3D"font-size:11.0pt;font-family:Verdana;color:blue=
">info</span></font><font size=3D"2" color=3D"blue" face=3D"Verdana"><span =
style=3D"font-size:11.0pt;font-family:Verdana;color:blue"> =96 or perhaps p=
rovide a sketch? Where is the exit from the
muffler? Does the exhaust exit through the slotted tube? How big is the tub=
e?</span></font></p>

<p class=3D"MsoNormal"><font size=3D"2" color=3D"blue" face=3D"Verdana"><sp=
an style=3D"font-size:11.0pt;font-family:Verdana;color:blue">=A0</span></fo=
nt></p><font color=3D"#888888">

<p class=3D"MsoNormal"><font size=3D"2" color=3D"blue" face=3D"Verdana"><sp=
an style=3D"font-size:11.0pt;font-family:Verdana;color:blue">Al</span></fon=
t></p>

</font></div>

</div>

</div>


</blockquote></div><br></div>

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