X-Virus-Scanned: clean according to Sophos on Logan.com
Return-Path: <msteitle@gmail.com>
Received: from rv-out-0506.google.com ([209.85.198.231] verified)
  by logan.com (CommuniGate Pro SMTP 5.2.11)
  with ESMTP id 3412671 for flyrotary@lancaironline.net; Tue, 06 Jan 2009 08:02:31 -0500
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.198.231; envelope-from=msteitle@gmail.com
Received: by rv-out-0506.google.com with SMTP id f6so9759710rvb.7
        for <flyrotary@lancaironline.net>; Tue, 06 Jan 2009 05:01:54 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=gamma;
        h=domainkey-signature:received:received:message-id:date:from:to
         :subject:in-reply-to:mime-version:content-type:references;
        bh=wPD64G02AFtsN3Sk+M9nlQG6jFXSaUqQCyea5BzaI/Y=;
        b=PZ6IGcj/rqEffxbIzlnlXHYuY8REpmLz5FBYfWSy6JbUuSio8uU/pvUAkcGAYaC5Lg
         wTK4SOI+OTLULfuBa3E4uZWEuQtZbJWxuUeUtTfGu36eXSBnF2JaLhuQ3qot5abKyCSf
         Ro4yWxvnIv5qBDTGhDof1g1J8ALEKjmlCtW54=
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:to:subject:in-reply-to:mime-version
         :content-type:references;
        b=A3+pSSY4pbm+N91j4Fr66vJBZxunVdhzItE4MPyYVeVydlMgvHQpTSuI/+JrEGN4sa
         nrTux67T+Utwqj5/rmgVhIpqbsjNhC5DNTN7xrfkICQ0EFs/g7t3q2DdhKwS4PnZaHbb
         CQfkmZypf2PZ0ueG6pIgnfOJvCuPGLKte2kzI=
Received: by 10.140.186.21 with SMTP id j21mr6719578rvf.187.1231246914649;
        Tue, 06 Jan 2009 05:01:54 -0800 (PST)
Received: by 10.140.166.4 with HTTP; Tue, 6 Jan 2009 05:01:54 -0800 (PST)
Message-ID: <5cf132c0901060501sb8f1cd5ic126a302c22f5f1c@mail.gmail.com>
Date: Tue, 6 Jan 2009 07:01:54 -0600
From: "Mark Steitle" <msteitle@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: 20B install issues overcome
In-Reply-To: <list-3412329@logan.com>
MIME-Version: 1.0
Content-Type: multipart/alternative; 
	boundary="----=_Part_124157_26784043.1231246914620"
References: <list-3412329@logan.com>

------=_Part_124157_26784043.1231246914620
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

I have a collection of discarded/destroyed/melted mufflers.  I'm still on
the lookout for the "perfect muffler".  I'll let you know when I find it.
So far, the only thing that works every time is the Lighspeed 33G.

Mark

On Mon, Jan 5, 2009 at 9:14 PM, Mike Wills <rv-4mike@cox.net> wrote:

>  At one point a few months ago I added a SuperTrapp to my existing exhaust
> just to see if it would tame it a little. Cost me about 500RPM on the top
> end with little or no improvement in the sound output.
>
> Mike Wills
>
> ----- Original Message -----
> *From:* wrjjrs@aol.com
> *To:* Rotary motors in aircraft <flyrotary@lancaironline.net>
> *Sent:* Monday, January 05, 2009 11:49 AM
> *Subject:* [FlyRotary] Re: 20B install issues overcome
>
> Earnest,
> I believe that the SuperTrapp muffler is an example of a band gap device
> and it worked well, if properly tuned.
> I think the large block idea has merit too, but you will have to allow
> enough thickness to prevent the tubes that see the exhaust first to fight
> the harmonic vibration and heat. Different size diamonds in the exhaust
> stream might also help fight harmonics.
> Bill Jepson
>
>
>
> ------------------------------
> Get a *free MP3* every day with the Spinner.com Toolbar. Get it Now<http://toolbar.aol.com/spinner/download.html?ncid=emlweusdown00000020>.
>
>
>

------=_Part_124157_26784043.1231246914620
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

<div>I have a collection&nbsp;of discarded/destroyed/melted mufflers.&nbsp; I&#39;m still on the lookout for the &quot;perfect muffler&quot;.&nbsp; I&#39;ll let you know when I find it.&nbsp; So far, the only thing that works every time is the Lighspeed 33G.</div>

<div>&nbsp;</div>
<div>Mark<br><br></div>
<div class="gmail_quote">On Mon, Jan 5, 2009 at 9:14 PM, Mike Wills <span dir="ltr">&lt;<a href="mailto:rv-4mike@cox.net">rv-4mike@cox.net</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">At one point a few months ago I added a SuperTrapp to my existing exhaust just to see if it would tame it a little. Cost me about 500RPM on the top end with little or no improvement in the sound output.</font></div>

<div><font face="Arial" size="2"></font>&nbsp;</div>
<div><font face="Arial" size="2">Mike Wills</font></div>
<blockquote dir="ltr" style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<div style="FONT: 10pt arial">----- Original Message ----- </div>
<div style="BACKGROUND: #e4e4e4; FONT: 10pt arial"><b>From:</b> <a title="wrjjrs@aol.com" href="mailto:wrjjrs@aol.com" target="_blank">wrjjrs@aol.com</a> </div>
<div style="FONT: 10pt arial"><b>To:</b> <a title="flyrotary@lancaironline.net" href="mailto:flyrotary@lancaironline.net" target="_blank">Rotary motors in aircraft</a> </div>
<div style="FONT: 10pt arial"><b>Sent:</b> Monday, January 05, 2009 11:49 AM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> [FlyRotary] Re: 20B install issues overcome</div>
<div><br></div>Earnest,<br>I believe that the SuperTrapp muffler is an example of a band gap device and it worked well, if properly tuned.<br>I think the large block idea has merit too, but you will have to allow enough thickness to prevent the tubes that see the exhaust first to fight the harmonic vibration and heat. Different size diamonds in the exhaust stream might also help fight harmonics.<br>
Bill Jepson<br><br><br>
<div><br><font style="FONT: 10pt ARIAL, SAN-SERIF; COLOR: black">
<hr style="MARGIN-TOP: 10px">
Get a <b>free MP3</b> every day with the Spinner.com Toolbar. <a href="http://toolbar.aol.com/spinner/download.html?ncid=emlweusdown00000020" target="_blank">Get it Now</a>. </font></div></blockquote></div></blockquote></div>
<br>

------=_Part_124157_26784043.1231246914620--