How is the Sportsman different than other STOL kits?
Other STOL kits utilize a leading edge “roll cuff”, and others incorporate drooping ailerons as well. These “roll cuffs” as we like to refer to them, increase the leading edge radius of the airfoil. The concept of a “roll cuff” is not new. There was an Italian by the name of Lombardi that used the leading edge roll back in the 1920’s and while it does aid in moderately improving stall speeds it does not have the performance gains as offered by the Sportsman. The Sportsman extends and droops the leading edge, without modifying the radius, therefore modifying the camber of the wing and adding nearly 4sq. feet of area to the wing. We sell many Sportsman kits to aircraft owners every year who remove their existing “roll cuff” and/or couple it to their drooped ailerons and they all report further performance increases of 10-15% and increases in aileron effectiveness. Look here to compare the Sportsman leading edge profile with others. Leading Edge Profiles… The Sportsman not only increase
