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Date: Sun, 29 Oct 2006 20:34:12 -0500
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From: "terrence o'neill" <troneill@charter.net>
References: <list-1512283@logan.com>
Subject: Re: [LML] Re: Aileron Vibration - Help
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Dan,
Finishing Lancair kit #11, and wondering how the ribs are oriented.
Thanks,
Terrence O'Neill
235/320 N211AL

----- Original Message ----- 
From: "Dan Schaefer" <dfs155@adelphia.net>
To: "Lancair Mailing List" <lml@lancaironline.net>
Sent: Sunday, October 29, 2006 08:02 AM
Subject: [LML] Re: Aileron Vibration - Help


> During the build on N235SP (EARLY LNC2) I noted that the aileron 
> counterbalance extensions of the lower aileron skins was quite flexible. 
> Considering that the lead weights had to be as far forward as possible, it 
> looked like a real good place for aileron flutter to start.
>
> To stiffen the extensions, I installed three half-moon shaped ribs (ends 
> and middle) made of 1/4 inch pre-preg honeycomb sheet. During flight 
> testing, the airplane was dive tested to 10% above red-line (carefully, a 
> few knots at a time) with no hint of "buzz" or flutter onset.
>
> The counterbalances can capture water so be sure to add drain holes 
> anywhere water could accumulate.
>
> Dan Schaefer
>
> --
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