X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from aspensprings.uwyo.edu ([129.72.10.32] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTPS id 5993967 for flyrotary@lancaironline.net; Thu, 03 Jan 2013 15:55:26 -0500 Received-SPF: none receiver=logan.com; client-ip=129.72.10.32; envelope-from=SBoese@uwyo.edu Received: from ponyexpress-ht3.uwyo.edu (extlb.uwyo.edu [172.26.4.4]) by aspensprings.uwyo.edu (8.14.4/8.14.4) with ESMTP id r03Ksc5Q009873 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Thu, 3 Jan 2013 13:54:50 -0700 (MST) (envelope-from SBoese@uwyo.edu) Received: from ponyexpress-hb1.uwyo.edu (10.84.66.35) by ponyexpress-ht3.uwyo.edu (10.84.66.26) with Microsoft SMTP Server (TLS) id 14.2.318.1; Thu, 3 Jan 2013 13:54:44 -0700 Received: from ponyexpress-m10.uwyo.edu ([fe80::60dd:cb9e:6f71:3d48]) by ponyexpress-hb1.uwyo.edu ([fe80::bc1d:430c:f399:767d%13]) with mapi id 14.02.0318.004; Thu, 3 Jan 2013 13:54:44 -0700 From: "Steven W. Boese" To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: turbo manifold Thread-Topic: [FlyRotary] Re: turbo manifold Thread-Index: AQHN6fGsd8fW66rfWU2p9zwvCYn4yZg4Er4K Date: Thu, 3 Jan 2013 20:54:44 +0000 Message-ID: <3E8191F276108F4481AB0721BBA9269E05ED2810@ponyexpress-m10.uwyo.edu> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [75.228.158.173] Content-Type: multipart/alternative; boundary="_000_3E8191F276108F4481AB0721BBA9269E05ED2810ponyexpressm10u_" MIME-Version: 1.0 --_000_3E8191F276108F4481AB0721BBA9269E05ED2810ponyexpressm10u_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bobby, I honestly don't know what the exhaust sound was like. The control panel f= or the test stand is on the opposite side from the exhaust outlet. Also, a= t RPM above 5200, the 3 blade Warp Drive prop was stalled and the prop nois= e was just deafening. I could feel what seemed to be ground vibrations in = my feet so testing higher power levels was disconcerting. At RPM below 520= 0, the noise was similar to having the GM diesel truck muffler on the NA 13= B. Steve ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = Bobby J. Hughes [bhughes@qnsi.net] Sent: Thursday, January 03, 2013 1:33 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: turbo manifold Steve, How did it sound without a muffler? I removed my belly muffler for a speed = run and it was not tolerable in the cockpit. Only picked up 1-2 mph so the = muffler is back on. Bobby --_000_3E8191F276108F4481AB0721BBA9269E05ED2810ponyexpressm10u_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Bobby,

I honestly don't know what the exhaust sound was like. The control= panel for the test stand is on the opposite side from the exhaust outlet.&= nbsp; Also, at RPM above 5200, the 3 blade Warp Drive prop was stalled= and the prop noise was just deafening. I could feel what seemed to be ground vibrations in my feet so testing h= igher power levels was disconcerting. At RPM below 5200, the noise wa= s similar to having the GM diesel truck muffler on the NA 13B.

Steve

From: Rotary motors in aircraft [flyrotary= @lancaironline.net] on behalf of Bobby J. Hughes [bhughes@qnsi.net]
Sent: Thursday, January 03, 2013 1:33 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: turbo manifold

Steve,

How did it sound without a muffler? I remo= ved my belly muffler for a speed run and it was not tolerable in the cockpi= t. Only picked up 1-2 mph so the muffler is back on.

Bobby

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