X-Virus-Scanned: clean according to Sophos on Logan.com
From: "Christian And Tamara Mcdonald" <flyrotary@lancaironline.net>
Received: from mail-lf0-f42.google.com ([209.85.215.42] verified)
  by logan.com (CommuniGate Pro SMTP 6.1.12)
  with ESMTPS id 9039517 for flyrotary@lancaironline.net; Sun, 16 Oct 2016 16:20:08 -0400
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.215.42; envelope-from=christamarmc@gmail.com
Received: by mail-lf0-f42.google.com with SMTP id b75so249781482lfg.3
        for <flyrotary@lancaironline.net>; Sun, 16 Oct 2016 13:20:10 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:from:date:message-id:subject:to;
        bh=xQPNEXvKpXYv6TBw9K5m0FA1ojwKGOeNLdraugeKURA=;
        b=tQsP/NLsgMpXca3EEEEp2NojMrJPIaLDTqQbclgHKZHnn2+M/RryJFWbHhS+nhBFX+
         rWMSI4JCVuyC8uLKxbo+05y7UJC2kKlhWZsGxFSt9iULXZ34qosILfNVNuPBLR+5sMyB
         mT1YkLViF9yK00zQZfiDJe7zJc/u+dl/nLr13mVF74f+xRhN5CT+2L55C1DtY1VQj78B
         HM2sebqdlt2dSQYuhLOsFmwU9ok3rbla59azFHbyYjj135nC3KWyV8Qsb/tYqOly1S9u
         /oK1NRgkGI1tEJlQBmcqd/U3HJe5GSJRFDxgCLgLivCYLcyb01Dt7yGMutuBDK7z/v7U
         76bQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20130820;
        h=x-gm-message-state:mime-version:in-reply-to:references:from:date
         :message-id:subject:to;
        bh=xQPNEXvKpXYv6TBw9K5m0FA1ojwKGOeNLdraugeKURA=;
        b=SX/q/4s4KaqFd0/lEnW73DaaCejTq3FyjnhvJyB+OI6gzC84FKXMXTSBupqQAOBhsp
         qsLQSfG1WJnbcEq3G2B2xgU4QX6IuALPTf4azFPTYpG4uC5q3xGevhCYtWVcPcDGEafH
         gY6olPhMFW7ch3N+/1VgpSbyKrbZWoaTxn5lxOvDdFLbiCR0byTiHok2H9VQkQa1Jyf5
         MuCSAafHbw1clztFAkNXXdwvkR/jRtSwIpZjCSxcNPStesCmy9bKnfMS6VURXCWREACD
         5kSXkHkNmsf8sPL4xdEW9ggL/yEFXR5CBAxPzDALOdf6U1kD/MDE+cFgwiZT2FBKSmr8
         7Gjg==
X-Gm-Message-State: AA6/9Rnl4koofuSXJ92PXZrw3uiE6QBiVm0jzmcvADW4k7m9XS5D1WtDFDfPPRECrG1J2hGoCp9tutJwqpfxQQ==
X-Received: by 10.28.52.148 with SMTP id b142mr5707344wma.5.1476649191026;
 Sun, 16 Oct 2016 13:19:51 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.80.186.8 with HTTP; Sun, 16 Oct 2016 13:19:50 -0700 (PDT)
In-Reply-To: <list-9038558@logan.com>
References: <list-9038558@logan.com>
Date: Mon, 17 Oct 2016 06:19:50 +1000
Message-ID: <CAOCgF+H-hZTyy2ew=Ra=_A0qf3AzchaR00_OeftoT--OudYNNw@mail.gmail.com>
Subject: Re: [FlyRotary] Christian's RV-7 down under...
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=001a11435d5c7d3b64053f012e3d

--001a11435d5c7d3b64053f012e3d
Content-Type: text/plain; charset=UTF-8

Hi Doug
Yes I do have an external muffler under the belly, I had it custom made
here in Aus with Inox as a baffle and so far has worked well and held up
with the heat.
The rest I welded up a simple stainless exhaust then made a shroud under
the cowl for it and piped air into it with the outlet towards the back, has
worked well to date.
I tried flying without and with the muffler and made no discernible
differance to speed, but definitely noise factor as you'd imagine.
Hope this helps

Cheers
If I could upload pictures I'd send you what mine looks like.


On Sunday, 16 October 2016, Doug Lomheim <flyrotary@lancaironline.net>
wrote:

> Christian:
>
> What are you doing for an exhaust system on your RV-7?
>
> Do you have an external muffler hung under the cockpit?
>
> Thanks.
>
> Doug
>
> RV-9A / 13B FWF
>
>
>

--001a11435d5c7d3b64053f012e3d
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Hi Doug<div>Yes I do have an external muffler under the belly, I had it cus=
tom made here in Aus with Inox=C2=A0as a baffle=C2=A0and so far has worked =
well and held up with the heat.</div><div>The rest I welded up a simple sta=
inless exhaust then made a shroud under the cowl for it and piped air into =
it with the outlet towards the back, has worked well to date.</div><div>I t=
ried flying without and with the muffler and made no discernible differance=
 to speed, but definitely noise factor as you&#39;d imagine.</div><div>Hope=
 this helps</div><div><br></div><div>Cheers</div><div>If I could upload pic=
tures I&#39;d send you what mine looks like.</div><div><br><div><br>On Sund=
ay, 16 October 2016, Doug Lomheim &lt;<a href=3D"mailto:flyrotary@lancairon=
line.net">flyrotary@lancaironline.net</a>&gt; wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><div style=3D"word-wrap:break-word"><font face=3D"-webkit-sta=
ndard" size=3D"3">Christian:=C2=A0</font><div><font face=3D"-webkit-standar=
d" size=3D"3"><br></font></div><div><font face=3D"-webkit-standard" size=3D=
"3">What are you=C2=A0doing for an exhaust system on your RV-7? =C2=A0</fon=
t></div><div><font face=3D"-webkit-standard" size=3D"3"><br></font></div><d=
iv><font face=3D"-webkit-standard" size=3D"3">Do you have an external muffl=
er hung under the cockpit? =C2=A0</font></div><div><font face=3D"-webkit-st=
andard" size=3D"3"><br></font></div><div><font face=3D"-webkit-standard" si=
ze=3D"3">Thanks.</font></div><div><font face=3D"-webkit-standard" size=3D"3=
"><br></font></div><div><font face=3D"-webkit-standard" size=3D"3">Doug</fo=
nt></div><div><font face=3D"-webkit-standard" size=3D"3"><br></font></div><=
div><font face=3D"-webkit-standard" size=3D"3">RV-9A / 13B FWF</font></div>=
<div><font face=3D"-webkit-standard" size=3D"3"><br></font></div><div><br><=
/div></div></blockquote></div></div>

--001a11435d5c7d3b64053f012e3d--