X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.254.136.67] (HELO slipstream-tor2.pvt.primus.ca) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTPS id 2085173 for flyrotary@lancaironline.net; Tue, 05 Jun 2007 10:38:19 -0400 Received-SPF: none receiver=logan.com; client-ip=216.254.136.67; envelope-from=aouellet@icecanada.com Received: from alain (localhost.localdomain [127.0.0.1]) by slipstream-tor2.pvt.primus.ca (8.12.11/8.12.11) with SMTP id l55EqbKD026060 for ; Tue, 5 Jun 2007 10:52:39 -0400 Received: from dsl-207-112-52-10.tor.primus.ca (aouellet%40globalserve.net@dsl-207-112-52-10.tor.primus.ca [207.112.52.10]) by slipstream-tor2.pvt.primus.ca (SlipStream SP Server 3.2.55 built 2005/01/19 11:21:25 -0500 (EST)); Tue, 05 Jun 2007 10:52:39 -0400 (EDT) From: "Alain Ouellet" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Single rotor video Date: Tue, 5 Jun 2007 10:39:06 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0011_01C7A75D.BE10FD10" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_0011_01C7A75D.BE10FD10 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit MessageRusty, Sure looks like one. Watch out for the blades touching the trailer, looks like kinda close!........... Maybe camera on a fixed tripod and experimenter safely behind the trailer.... Be safe. Alain -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: June 5, 2007 10:17 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Single rotor video What a great video. I ran it in slow motion. Hi Al, I never thought about running this in slow motion, but holy crap!!! For the dialup folks, here are a couple frames from the video, when the engine was probably around 2500 rpm. These are sequential frames, so only a 30th of a second apart. Take a look at the blade flex, but then note the position of the engine from rotational torque. It's undeniable that this is a torque reversal issue. Before I change dampers, I may make another video at more controlled rpms, and with the camera zoomed in on the engine/prop more. Rusty (creating a monster) ------=_NextPart_000_0011_01C7A75D.BE10FD10 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
Rusty,
 
Sure=20 looks like one.
Watch=20 out for the blades touching the trailer, looks like kinda = close!...........=20
Maybe=20 camera on a fixed tripod and experimenter safely behind the=20 trailer....
Be=20 safe.
 
Alain
 
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Russell=20 Duffy
Sent: June 5, 2007 10:17 AM
To: Rotary = motors in=20 aircraft
Subject: [FlyRotary] Re: Single rotor=20 video

What a great video. I ran it in slow motion.  
 
Hi=20 Al,
 
I never=20 thought about running this in slow motion, but=20 holy crap!!!  
 
For the=20 dialup folks, here are a couple frames from the video, when the engine = was=20 probably around 2500 rpm.  These are sequential frames, so only a = 30th of=20 a second apart.  Take a look at the blade flex, but then note=20 the position of the engine from rotational torque.  It's = undeniable=20 that this is a torque reversal=20 issue.    
 
Before I=20 change dampers, I may make another video at more controlled rpms, and = with the=20 camera zoomed in on the engine/prop more. 
 
Rusty=20 (creating a monster)
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