X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.123] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3877033 for flyrotary@lancaironline.net; Tue, 06 Oct 2009 20:21:55 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.123; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta01.mail.rr.com with ESMTP id <20091007002118321.CVUX22985@cdptpa-omta01.mail.rr.com> for ; Wed, 7 Oct 2009 00:21:18 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Mystery Radio Noise Date: Tue, 6 Oct 2009 20:30:52 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001E_01CA46C3.E6695430" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcpGzxnjvI2aSadASvmZpbrLG2haBAACSfgg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Message-Id: <20091007002118321.CVUX22985@cdptpa-omta01.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_001E_01CA46C3.E6695430 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Buy new underwear at Wall-marts? The exhaust pipe could be rolling vortexs off its tips affecting your comm. Antenna. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bobby J. Hughes Sent: Tuesday, October 06, 2009 6:54 PM To: Rotary motors in aircraft Subject: [FlyRotary] Mystery Radio Noise Got the plane back together late Sunday just in time for a few laps around the airport. Oil temps showed major improvements with the larger inlets. Climbing at 100 mph to 3000 ft, 7200 rpm on take off, reduced to 6500 rpm at 500 ft agl. Maintained 6500 rpm at 37" MP for several circuits. Oil temps went to 220F but started to come down when I leveled off. Water stay at 190F or below. OAT was 88F . My new "test" ducts do not seal as well as the first set so hopefully I still have room for improvement. While level at 3000 ft \ ground speed showing 145 knots I pitched the nose down and heard a startling noise in my headset. Almost like wires shorting. Leveled off and noise stopped. Pitched up no change. Pitch down the noise returned. I decided it could not be wiring and repeated this several times. It also happened at slower speeds but I don't remember at what speed it stopped. It doesn't happen on the ground at full power run up. My guess is my new exhaust is somehow affecting the comm antenna when in a nose down attitude. The exhaust ends about 1 ft in front and 1 ft to the side of the antenna. Any ideas? Bobby J Hughes RV-10 SC Renesis __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_001E_01CA46C3.E6695430 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Buy new underwear at = Wall-marts?

 

The exhaust pipe could be rolling = vortexs off its tips affecting your comm. Antenna.  =

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bobby J. Hughes
Sent: Tuesday, October = 06, 2009 6:54 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Mystery Radio Noise

 

Got the plane back together late Sunday just in time = for a few laps around the airport. Oil temps showed major improvements = with the larger inlets. Climbing at 100 mph to 3000 ft, 7200 rpm on take off, = reduced to 6500 rpm at 500 ft agl.

Maintained 6500 rpm at 37" MP for several = circuits. Oil temps went to 220F but started to come down when I leveled off. Water = stay at 190F or below. OAT was 88F . My new "test"  ducts do = not seal as well as the first set so hopefully I still have room for = improvement.

 

While level at 3000 ft \ ground speed showing = 145 knots I pitched the nose down and heard a startling noise in my = headset. Almost like wires shorting. Leveled off and noise stopped. Pitched up no change. Pitch down the noise returned. I decided it could not be wiring = and repeated this several times. It also happened at slower speeds but I = don't remember at what speed it stopped. It doesn't happen on the ground at = full power run up. My guess is my new exhaust is somehow affecting the comm = antenna when in a nose down attitude. The exhaust ends about 1 ft in front and 1 = ft to the side of the antenna. Any ideas?

 

Bobby J = Hughes

RV-10 SC = Renesis

 



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

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