X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from ms-smtp-05.southeast.rr.com ([24.25.9.104] verified) by logan.com (CommuniGate Pro SMTP 5.1.6) with ESMTP id 1854171 for flyrotary@lancaironline.net; Wed, 21 Feb 2007 18:25:02 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.104; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-05.southeast.rr.com (8.13.6/8.13.6) with SMTP id l1LNNnWZ015658 for ; Wed, 21 Feb 2007 18:23:50 -0500 (EST) Message-ID: <000c01c7560f$58216430$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Another exploding cigar?? Date: Wed, 21 Feb 2007 18:23:49 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01C755E5.6EE26130" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0009_01C755E5.6EE26130 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Dave. Basically, the Swiss muffler is attributed to the tough noise abatement = rules of the Swiss government for aircraft - including small GA and = experimental. Tony Bingelis who wrote a column of "How to" for Sport = Aviation for years included it in one of his books "FireWall = Forward"-Page 112. The muffler (as shown in his book) was an aluminum tube 3 1/8" in = diameter about 4 -5 feet long. A stainless steel mesh was rolled into a = smaller diameter tube to be stuck in the middle after fiberglass cloth = was wrapped around the mesh tube. This was all stuffed in the 3 1/8" = aluminum tube making a very light weight and effective muffler. Sort of = a light weight glass-pack muffler. It was then hung under the belly of the aircraft. The problem for the rotary is that the exhaust pulse will pulverize = fiberglass (or almost anything else in short time). Again, the problem = is not the heat its the power of the exhaust pulse. Hope that explained it. Ed=20 ----- Original Message -----=20 From: david mccandless=20 To: Rotary motors in aircraft=20 Sent: Wednesday, February 21, 2007 6:44 PM Subject: [FlyRotary] Re: Another exploding cigar?? On 22, Feb , at 6:29 AM, Ed Anderson wrote: Thanks, Jason. My experiments with the Swiss muffler did not work out - Ed=20 Hi Ed, could you explain "Swiss" muffler? TIA, Dave ------=_NextPart_000_0009_01C755E5.6EE26130 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Dave.
 
Basically, the Swiss muffler is attributed to = the tough=20 noise abatement rules of the Swiss government for aircraft = - including=20 small GA and experimental.  Tony Bingelis who wrote a column of = "How to"=20 for Sport Aviation for years included it in one of his books "FireWall=20 Forward"-Page 112.
 
The muffler (as shown in his book) was an = aluminum tube 3=20 1/8" in diameter about 4 -5 feet long.  A stainless steel mesh was = rolled=20 into a smaller diameter tube to be  stuck in the = middle after=20  fiberglass cloth was wrapped around the mesh = tube. =20 This was all stuffed in the 3 1/8" aluminum tube making a very = light weight=20 and effective muffler.  Sort of a light weight glass-pack=20 muffler.
 
It was then hung under the belly of the=20 aircraft.
 
The problem for the rotary is that the exhaust = pulse will=20 pulverize fiberglass (or almost anything else in short = time). =20 Again, the problem is not the heat its the power of the exhaust=20 pulse.
 
Hope that explained it.
 

Ed 
----- Original Message -----
From:=20 david=20 mccandless
Sent: Wednesday, February 21, = 2007 6:44=20 PM
Subject: [FlyRotary] Re: = Another=20 exploding cigar??

On 22, Feb , at 6:29 AM, Ed Anderson wrote:
Thanks, Jason.
My experiments with the Swiss muffler = did not=20 work out -
Ed
H= i=20 Ed,
could you explain "Swiss" muffler?
TIA,=20 Dave
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