I´m building a 122 inch wing span airplane, the wing is a copy of the G.P. Easy Sport. The tail will be airfoiled and I was wondering if there is a formula to know the size that the tail should have, the stab and elevators mainly. The fuse is 96 inches long without engine and rudder, so it will be about 108 inche with a Minarelli 125 and the rudder. Any help is welcome.
Steven