RE: Sig Four-Star 60
Hi,
I added 3" to the bottom of the rudder and 1/2 to the top, it's now triangular shaped, like an edge. Both rudder and elevator are pull-pull with HS475 servo's.
I did have to go back later and reinforce the mount on the rudder with a lite ply base, the balsa proved to be a little soft for the control horn. Works well now.