Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Mon, 09 Dec 2002 19:43:08 -0500
Message-ID: <redirect-1898401@logan.com>
From: Sky2high@aol.com
Subject: Re: [LML] Re: aileron balancing
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The correct way to balance ailerons is neutral around the hinge line and 
remember this - 

1. Control pushrod attachment will add a mass ahead of the hinge line during 
1-G flight.  In the case of engine/prop/speed/turbulence induced wing/aileron 
vibration, the pushrod can also load and unload on the aileron - but ahead of 
the hinge line.

2.  At least in 320/360's, there is plenty of pushrod "lash" in the aileron 
system - this can lead to "buzz" even with weight balancer stiffeners.   
Ailerons at cruise neutral have very little "load" on them so, just a 
suggestion, consider rigging both ailerons slightly "up", thus generating a 
wee air load to eliminate the lash dead band.

Scott Krueger
N92EX

PS On my airplane, the 1/2 moon weights extended almost the full length of 
the curved leading edge before painting.  I had to add about 1.5 inches of 
1/2 moon weight after painting.  I don't have the stiffeners that many have 
mentioned (this was a slow build 320, kit circa 1989) and, rigged slightly 
up, the ailerons exhibit no tendency to vibrate.  Perhaps the number of times 
I heated the curved leading edge for fit (before and after glassing) added to 
their stiffness.  No micro fill was used to finish the fit to the wing.

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<HTML><FONT FACE=arial,helvetica><FONT  SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">The correct way to balance ailerons is neutral around the hinge line and remember this - <BR>
<BR>
1. Control pushrod attachment will add a mass ahead of the hinge line during 1-G flight.&nbsp; In the case of engine/prop/speed/turbulence induced wing/aileron vibration, the pushrod can also load and unload on the aileron - but ahead of the hinge line.<BR>
<BR>
2.&nbsp; At least in 320/360's, there is plenty of pushrod "lash" in the aileron system - this can lead to "buzz" even with weight balancer stiffeners.&nbsp;&nbsp; Ailerons at cruise neutral have very little "load" on them so, just a suggestion, consider rigging both ailerons slightly "up", thus generating a wee air load to eliminate the lash dead band.<BR>
<BR>
Scott Krueger<BR>
N92EX<BR>
<BR>
PS On my airplane, the 1/2 moon weights extended almost the full length of the curved leading edge before painting.&nbsp; I had to add about 1.5 inches of 1/2 moon weight after painting.&nbsp; I don't have the stiffeners that many have mentioned (this was a slow build 320, kit circa 1989) and, rigged slightly up, the ailerons exhibit no tendency to vibrate.&nbsp; Perhaps the number of times I heated the curved leading edge for fit (before and after glassing) added to their stiffness.&nbsp; No micro fill was used to finish the fit to the wing.</FONT></HTML>

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