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Message-ID: <5cf132c0801130411y1124d0cbx9ea82c2beef9bb29@mail.gmail.com>
Date: Sun, 13 Jan 2008 06:11:26 -0600
From: "Mark Steitle" <msteitle@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Mark's HushPower 2 resonator
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Kelly,

I ordered the ball joint from Custom Aircraft Parts (customaircraft.com).
They do nice work, but definitely not the cheapest route to go.

Mark

On Jan 12, 2008 9:11 PM, Kelly Troyer <keltro@att.net> wrote:

>  Mark,
>     Looks good.......Where did you source the ball joint coupling
> ??.......And
> keep us up dated on whether the sweet tone is maintained if the packing
> material decides to depart !!.............
> --
> Kelly Troyer
> "Dyke Delta"_13B ROTARY Engine
> "RWS"_RD1C/EC2/EM2
> "Mistral"_Backplate/Oil Manifold
>
>
>
>
> -------------- Original message from "Mark Steitle" <msteitle@gmail.com>:
> --------------
>
> For rotorheads that are contemplating using (also the mildly curious) the
> Flowmaster HP-2 "resonator" muffler,
>
> I installed the HP-2 today on my 20B and was able to do a run-up.  Bobby
> Hughes and I both agree that the exhaust tone is much, much mellower with a
> deeper tone.  My Lighspeed ANR headset had no problem cancelling out this
> low-frequency exhaust tone.  While the overall sound level was still pretty
> significant, the exhaust tone was much more pleasant to the ears.  The
> ear-piercing, glass shattering, nails-on-the-chalkboard,
> make-you-bleed-from-the-ears, exhaust tone is totally tamed.  The 3-blade
> M/T prop is the primary noisemaker now.  The test took place between two
> rows of hangars, so I feel that DB readings are not very realistic.  I'll
> take those again out on the ramp and post the numbers.  If the HP-2 holds up
> to the pounding of the rotary's exhaust, I'll be a very happy camper.
>
> Mark S.
>
>

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Kelly,<br>&nbsp;<br>I ordered the ball joint from Custom Aircraft Parts (<a href="http://customaircraft.com">customaircraft.com</a>).&nbsp; They do nice work, but definitely not the cheapest route to go.<br><br>Mark <br><br><div class="gmail_quote">
On Jan 12, 2008 9:11 PM, Kelly Troyer &lt;<a href="mailto:keltro@att.net">keltro@att.net</a>&gt; wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">



<div>

<div></div>
<div>Mark,</div>
<div>&nbsp;&nbsp;&nbsp; Looks good.......Where did you source the ball joint coupling ??.......And</div>
<div>keep us up dated on whether the sweet tone is maintained if the packing</div>
<div>material decides to depart !!.............</div>
<div>--<br>Kelly Troyer <br>&quot;Dyke Delta&quot;_13B ROTARY Engine <br>&quot;RWS&quot;_RD1C/EC2/EM2 <br>&quot;Mistral&quot;_Backplate/Oil Manifold <br><br><br><br></div><br>
<blockquote style="border-left: 2px solid rgb(16, 16, 255); padding-left: 5px; margin-left: 5px;">-------------- Original message from &quot;Mark Steitle&quot; &lt;<a href="mailto:msteitle@gmail.com" target="_blank">msteitle@gmail.com
</a>&gt;: -------------- <br><br>For rotorheads that are contemplating using (also the mildly curious) the Flowmaster HP-2 &quot;resonator&quot; muffler,<br><br>I installed the HP-2 today on my 20B and was able to do a run-up.&nbsp; Bobby Hughes and I both agree that the exhaust tone is much, much mellower with a deeper tone.&nbsp; My Lighspeed ANR headset had no problem cancelling out this low-frequency exhaust tone.&nbsp; While the overall sound level was still pretty significant, the exhaust tone was much more pleasant to the ears.&nbsp; The ear-piercing, glass shattering, nails-on-the-chalkboard, make-you-bleed-from-the-ears, exhaust tone is totally tamed.&nbsp; The 3-blade M/T prop is the primary noisemaker now.&nbsp; The test took place between two rows of hangars, so I feel that DB readings are not very realistic.&nbsp; I&#39;ll take
 those again out on the ramp and post the numbers.&nbsp; If the HP-2 holds up to the pounding of the rotary&#39;s exhaust, I&#39;ll be a very happy camper. <br><br>Mark S.<br></blockquote>


</div>

</blockquote></div><br>

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