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Message-ID: <1b4b137c0801100639i30bd67c2rfaaabc0bf0acafd7@mail.gmail.com>
Date: Thu, 10 Jan 2008 09:39:51 -0500
From: "Tracy Crook" <tracy@rotaryaviation.com>
Sender: rwstracy@gmail.com
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Exploded View of Hushpower II Muffler
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I didn't see the cutaway drawing you guys are talking about but my two HP-2
mufflers (I ended up putting one on the RV-8 as well) do not have any kind
of packing material.  There are two 'nose to nose' perforated cones (one on
inlet and one on outlet).   Flowmaster says there are also some "laminar
flow baffles" in there but I can't see them without cutting the muffler
apart.

FWIW, I've tried many mufflers with packing material of all types and none
of them held up for more than a few hours before loosing their stuffing.

Tracy C.

On Jan 9, 2008 3:27 PM, Mark Steitle <msteitle@gmail.com> wrote:

> Ed,
> The innards of the HP-2 Series appear to be different from the one shown.
> The HP-2 has an entry cone, but the rest looks different.  I'm pretty sure
> that the HP-2 still uses some form of packing material.
>
> Mark S.
>
>

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<div>I didn&#39;t see the cutaway drawing you guys are talking about but my two HP-2 mufflers (I ended up putting one on the RV-8 as well) do not have any kind of packing material.&nbsp; There are two &#39;nose to nose&#39; perforated cones (one on inlet and one on outlet).&nbsp;&nbsp; Flowmaster says there are also some &quot;laminar flow baffles&quot; in there but I can&#39;t see them without cutting the muffler apart.&nbsp; 
</div>
<div>&nbsp;</div>
<div>FWIW, I&#39;ve tried many mufflers with packing material of all types and none of them held up for more than a few hours before loosing their stuffing.</div>
<div>&nbsp;</div>
<div>Tracy C.<br><br></div>
<div class="gmail_quote">On Jan 9, 2008 3:27 PM, Mark Steitle &lt;<a href="mailto:msteitle@gmail.com">msteitle@gmail.com</a>&gt; wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>Ed, </div>
<div>The innards of the HP-2 Series&nbsp;appear to be&nbsp;different from the one shown.&nbsp; The HP-2 has&nbsp;an entry cone, but the rest looks different.&nbsp; I&#39;m pretty sure that the HP-2&nbsp;still uses some form of packing material.&nbsp;&nbsp;<br>
&nbsp;</div>
<div>Mark S.<br>&nbsp;</div></blockquote></div><br>

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