X-Virus-Scanned: clean according to Sophos on Logan.com
Return-Path: <jewen@comporium.net>
Received: from rg5.comporium.net ([208.104.2.25] verified)
  by logan.com (CommuniGate Pro SMTP 5.2.14)
  with ESMTPS id 3644074 for flyrotary@lancaironline.net; Sat, 16 May 2009 09:28:41 -0400
Received-SPF: pass
 receiver=logan.com; client-ip=208.104.2.25; envelope-from=jewen@comporium.net
Received: from ms2.comporium.net (EHLO ms2.comporium.net) ([208.104.2.28])
	by rg5.comporium.net (MOS 3.8.4-GA FastPath queued)
	with ESMTP id BQG96767;
	Sat, 16 May 2009 09:28:04 -0400 (EDT)
Received: (from ms2.comporium.net [208.104.2.23])
	by ms2.comporium.net (MOS 3.8.4-GA)
	with HTTP/1.1 id DGD80579 (AUTH jewen);
	Sat, 16 May 2009 09:28:04 -0400 (EDT)
From: <jewen@comporium.net>
Subject: 20b Exhaust
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
X-Mailer: Mirapoint Webmail Direct 3.8.4-GA
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-Id: <20090516092804.DGD80579@ms2.comporium.net>
Date: Sat, 16 May 2009 09:28:04 -0400 (EDT)
X-Junkmail-Status: score=10/70, host=rg5.comporium.net
X-Junkmail-SD-Raw: score=unknown,
	refid=str=0001.0A01020A.4A0EBF64.0226:SCFSTAT3693017,ss=1,fgs=0,
	ip=208.104.2.28,
	so=2007-03-13 10:31:19,
	dmn=5.7.1/2008-09-02

I have fabricated my exhaust manifold/tangential muffler for my 20b.  All I have left is to fit and weld the exhaust pipe.  I would like opinions on the size the exhaust pipe should be.  This is in a pusher application (Velocity) with a relatively short run from the muffler to the exit point.  Similar installation to Al G.

Thanks,
Joe