Mailing List flyrotary@lancaironline.net Message #37705
From: Alain Ouellet <aouellet@icecanada.com>
Subject: RE: [FlyRotary] Re: Single rotor video
Date: Tue, 5 Jun 2007 10:39:06 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
Rusty,
 
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)
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