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Date: Thu, 11 Mar 2010 10:01:08 -0500
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From: Brian Alley <n320wt@yahoo.com>
Subject: Re: IV-P Elevator Balance
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Colyn, The small cross section of the fuselage just forward of the H-stab allows the empennage to oscillate like a flywheel or maybe more like a watch spring. The counterbalance weights I believe, increase the amplitude and duration of the oscillation. Removing the weight from the elevator tips and placing it inside the fuselage on the bob weight arm, reduces the fly wheel effect. It is a simple matter of less mass at the ends of the elevators. I also believe the SB on elevator bearings supports my theory. After installing the V-stab extension, there is a noticeable increase in stiffness of the fuselage. The extension extends over the before mentioned fuselage cross section adding an additional structure stiffening the fuselage in torsion.

BRIAN ALLEY (N320WT) 

CARBON FIBER COMPOSITES

101 Caroline Circle

Hurricane, WV 25526

www.carbonfibercomposites.net

304-562-6800 home

304-395-4932 cell


How are you going to win by a nose if you don't stick out your neck?
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<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Colyn, The small cross section of the fuselage just forward of the H-stab allows the empennage to oscillate like a flywheel or maybe more like a watch spring. The counterbalance weights I believe, increase the amplitude and duration of the oscillation. Removing the weight from the elevator tips and placing it inside the fuselage on the bob weight arm, reduces the fly wheel effect. It is a simple matter of less mass at the ends of the elevators. I also believe the SB on elevator bearings supports my theory. After installing the V-stab extension, there is a noticeable increase in stiffness of the fuselage. The extension extends over the before mentioned fuselage cross section adding an additional structure stiffening the fuselage in torsion.<br><br>BRIAN ALLEY (N320WT) <br>
CARBON FIBER COMPOSITES<br>
101 Caroline Circle<br>
Hurricane, WV 25526<br>
www.carbonfibercomposites.net<br>
304-562-6800 home<br>
304-395-4932 cell<br>
<br>
How are you going to win by a nose if you don't stick out your neck?</td></tr></table>
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