X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost06.isp.att.net ([204.127.217.106] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3871343 for flyrotary@lancaironline.net; Thu, 01 Oct 2009 14:38:04 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.106; envelope-from=keltro@att.net DKIM-Signature: v=1; q=dns/txt; d=att.net; s=dkim01; i=keltro@att.net; a=rsa-sha256; c=relaxed/relaxed; t=1254422283; h=Content-Type: MIME-Version:In-Reply-To:Message-Id:Date:Subject:To:From; bh=Ra7Vo5 06Ts3VGkTnl/mLONHBbYSt14uI16J3yCjl0Uk=; b=bvlqYbDfMI+4wbytfIXKwenne xZoLmg6g3CQN31LVq5d9pUDXzMKFfj5IujrT3NtIgbhxwZAwT7uBuwxhOILVQ== Received: from fwebmail17.isp.att.net ([207.115.9.157]) by isp.att.net (frfwmhc06) with SMTP id <20091001183727H0600ll3fie>; Thu, 1 Oct 2009 18:37:27 +0000 X-Originating-IP: [207.115.9.157] Received: from [208.114.47.43] by fwebmail17.isp.att.net; Thu, 01 Oct 2009 18:37:27 +0000 From: "Kelly Troyer" To: "Rotary motors in aircraft" Subject: "20B/13B Exhaust Inserts" was Quiet is Deafening Date: Thu, 01 Oct 2009 18:37:27 +0000 Message-Id: <100120091837.13653.4AC4F6E70004687F0000355522228869349B0A02D29B9B0EBF019D9B040A05@att.net> In-Reply-To: X-Mailer: AT&T Message Center Version 1 (Mar 2 2009) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_13653_1254422247_0" --NextPart_Webmail_9m3u9jl4l_13653_1254422247_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Mark, Has anyone ever explained the reasoning for the odd "D" shape of the stock "Cosmo" 20B/13B rotor housing exhaust inserts ??.....................Inquiring minds want to know !!.................. -- Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from Mark Steitle : -------------- I may end up with a turbo, but I'm hoping the tangential muffler will work well enough to keep that option off the table. I'm also building a new p-port engine to replace the stock 3-rotor, so I really don't anticipate needing any more hp. This time I plan to leave the stock exhaust splitters in the rotor housings. Mark On Thu, Oct 1, 2009 at 11:02 AM, John Slade wrote: >What kind of muffler are you running? Is it working? Its a Turbonetics T04 turbo, and yes, it works quite well. Also has a few other side benefits. :) Of course, building the airplane out of foam and fiberglass rather than metal helps deaden the vibrations too. Regards, John Mark Steitle wrote: John, What kind of muffler are you running? Is it working? Mark On Thu, Oct 1, 2009 at 10:48 AM, John Slade wrote: >You just need to fly at Mach 1 so you stay ahead of the sound. No need to go Mach 1. Just put the engine on the back, where it's supposed to be. :) -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html --NextPart_Webmail_9m3u9jl4l_13653_1254422247_0 Content-Type: multipart/related; boundary="NextPart_Webmail_9m3u9jl4l_13653_1254422247_1" --NextPart_Webmail_9m3u9jl4l_13653_1254422247_1 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Mark,
  Has anyone ever explained the reasoning for the odd "D" sh= ape of the stock "Cosmo" 20B/13B rotor
housing exhaust inserts ??.....................Inquiring minds want to= know !!..................
--
Kelly Troyer
"Dyke Delta"_1= 3B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifol= d



 
-------------- Original message from Mark Steitle <msteit= le@gmail.com>: --------------

I may end up with a turbo, but I'm hoping the tangential muffler will = work well enough to keep that option off the table.  I'm also building= a new p-port engine to replace the stock 3-rotor, so I really don't a= nticipate needing any more hp.  This time I plan to&nbs= p;leave the stock exhaust splitters in the rotor housings. 
 
Mark

On Thu, Oct 1, 2009 at 11:02 AM, John Slade <jslade@canardavi= ation.com> wrote:
>What kind of muffler are you running?  Is it working?  <= /DIV>
Its a Turbonetics T04 turbo, and yes, it works quite well.  Also = has a few other side benefits. :)
Of course, building the airplane out o= f foam and fiberglass rather than metal helps deaden the vibrations too.
Regards,
John=20


Mark Steitle wrote:=20
John,
 
What kind of muffler are you running?  Is it working? 

Mark
On Thu, Oct 1, 2009 at 10:48 AM, John Slade <= jslade@canardaviation.com> wrote:
><= /FONT>You just need to fly at Mach 1 so you stay ahead of the sound.
No = need to go Mach 1. Just put the engine on the back, where it's supposed to = be. :)


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