If you think about it, reflexing the control surfaces up is a way of lowering the incidence of the wing in relation to the fuselage and more importantly, the horizontal stab. If your incidence is set correctly to begin with, then reflexing control surfaces up isn't going to help. However, reflexing control surfaces up can adversely affects the way the airfoil works.
Back when my KR was new I played with aileron position quite a bit with a lot of flight testing to prove it out. I could change the pitch attitude of the aircraft by adjusting the ailerons up and down, but it had no substantial impact on the speed of the aircraft. Whaatever I gained in the wing, I lost in drag trimming it out with the tail I recently rerigged a Beech Skipper that someone had reflexed both flaps and ailerons up in the hopes of making the plane faster. What it did is create a wicked stall that would wash out with no warning. The cruise was slower and climb performance was really bad, at least in part due to the aileron counterweights hanging out in the wind instead of being streamlined behind the wing tip when it was properly rigged. -Jeff Scott Los Alamos, NM -- "Oscar Zuniga" <taildr...@hotmail.com> wrote: Larry suggested to Mark L.: >Have you considered rigging the flaps for negative deflection >at cruise to pick up a few mph? Recall that Mark's plane has split flaps, so it's physically impossible for them to reflex upward (assuming a rigid upper skin). Oscar Zuniga San Antonio, TX mailto: taildr...@hotmail.com website at http://www.flysquirrel.net _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
