From: RicArgente@cs.com
Message-ID: <da880d68.24843ff8@cs.com>
Date: Mon, 31 May 1999 15:41:44 EDT
Subject: Aileron Vibration
To: lancair.list@olsusa.com
Mime-Version: 1.0

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First of all, I would like to thank everybody who responded to my original 
post with good advice and warnings, thanks much!   Furthermore, I am pleased 
to say that my aileron vibration problems is now in the past and no longer 
exists, thanks to this forum.

After inspecting both ailerons, I discovered that the right aileron (the good 
one) had a very stiff LE, but the left one was kinda flimsy.  I proceeded to 
stiffen the left aileron with 2-bid along the entire span of the LE and also 
added a small pre-preg right in the middle section.  This mod really 
stiffened the LE quite a bit.  I installed both ailerons this moring and 
flew...  Absolutely NO VIBRATION!  Smooth as silk!  The plane felt great and 
I had a fun time flying it this morning.  

So based on this experience, the following summary:
	
	- Make sure that the ailerons are 100% or more balanced;
	- Make the TE section of the ailerons as stiff as can be (added 
pre-preg braces 
           and /or more bids if necessary);
	- Rig the ailerons in  the flared position or even a little bit above 
flared during cruise by adjusting 
           the flap and/or the aileron rod ends.

Gee, having solved this problem, another one surfaced today.  While doing an 
emergency gear extention test today (on jacks), I heard some really awful 
sounds.  Apparantly, the TOP phenolic hard point where the main gear 
hydraulic cylinder attaches separated from the nose gear well.  I guess I was 
lucky again that this did not happen during flight.  Obviously, I have to 
bring out the epoxy pump again and fix this problem but probably add more 
bids to beef-up this area even more.  I do beleive, if I remember correctly, 
that this was a factory layup, so I don't know how much bids was there to 
start with.  Probably need to look at the manual again to check.  Back to 
work...

Thanks again guys,   ;-)

Rick Argente
N360ZR


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