X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wproxy.gmail.com ([64.233.184.194] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 923854 for flyrotary@lancaironline.net; Thu, 12 Jan 2006 11:34:40 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.194; envelope-from=russell.duffy@gmail.com Received: by wproxy.gmail.com with SMTP id 37so418507wra for ; Thu, 12 Jan 2006 08:33:55 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:from:to:subject:date:message-id:mime-version:content-type:x-priority:x-msmail-priority:x-mailer:importance:in-reply-to:x-mimeole; b=jTRoJDiKwQqDzruGmVwZ7hcr7zo4WytEcmd9Me1LPF2RR8jro7cspYyzNIfp2XOVZIz042mDCwhzDZRT2uZ6kh5Kfa3P75l1E+JzkG24s+Y1+TuWKxBAmwj9K66ptpUcpffjbqn3/9nnBzm0oFmFyrTePhNbwvCm18123Y21xG4= Received: by 10.54.131.18 with SMTP id e18mr3795374wrd; Thu, 12 Jan 2006 08:33:55 -0800 (PST) Return-Path: Received: from rd ( [65.6.194.9]) by mx.gmail.com with ESMTP id g3sm1162131wra.2006.01.12.08.33.54; Thu, 12 Jan 2006 08:33:55 -0800 (PST) From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Cool Tube Muffler Sound Readings Date: Thu, 12 Jan 2006 10:33:55 -0600 Message-ID: <000201c61795$fb6453a0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0003_01C61763.B0C9E3A0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0003_01C61763.B0C9E3A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I would like to take some readings from a certified engine for comparison. I measured 104db at 3000 & 4000 rpm from my spiral flow muffler. I'd bet the average Lycoming would make a lot more noise at 3000-4000 rpm :-) Rusty (free from in-laws until Monday) ------=_NextPart_000_0003_01C61763.B0C9E3A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

I would like to take some readings from a certified = engine=20 for
comparison.   I measured 104db at 3000 & 4000 rpm = from my=20 spiral flow
muffler. 

 
I'd bet = the average=20 Lycoming would make a lot more noise at 3000-4000 rpm = :-)
 
Rusty = (free from in-laws=20 until Monday)



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