From: Sky2high@aol.com
Message-ID: <71000e72.24e2f489@aol.com>
Date: Wed, 11 Aug 1999 11:45:13 EDT
Subject: Flap Fitting - LNC2
To: lancair.list@olsusa.com
Mime-Version: 1.0

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Ed,

Please note that the wing/flap on a 320/360 is different than on a 235.

320/360 wings are designed to have a -7 degree reflex at the faired-in 
position.  The purpose of reflex is to eliminate the unneeded extra lift 
(hence extra drag) of the wing at cruise speeds.  At lower speeds, the normal 
wing form (un-reflexed) provides more lift.  At takeoff, It is recommended 
that one use 10 degrees of flap -- that's 3 degrees down from the wing form.

On approach to the airport, at 150 Kts I take out the reflex and that pulls 
about 15 Kts off the speed and starts to lower the nose.  I then add flaps to 
the take off position and that reduces the speed below gear extension speed 
(122 Kts), drop the gear and more nose down trim and I am at about 100 Kts to 
enter the pattern.  All of this usually without power changes to the 
relatively low settings.

My fillet and flap both required some fill so the complex curve matched up 
nicely.  After test flights in primer, the right flap was adjusted up a hair 
and the left flap was adjusted down a bit (slightly more than a hair).  
Before painting, the fill was sanded to better fit the curve, even though the 
trailing edge does not "exactly" match up with the fillet.  My fuselage 
molding had the right fillet trailing edge almost 1/2 inch lower (when the 
plane was levelled laterally) than the left and this was discovered after I 
built the flaps to those points.

Hope this helps....

Scott Krueger
N92EX
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