ORIGINAL: Mitsu1
The title of this thread is "World Models 50cc Ultimate" .. with that fact in mind, we are not talking about the Ultimate 120 which has a 53.5" span, but rather we are talking about the 27% 50cc Ultimate which has a 63.5" span. The stab is airfoiled.
Ok, though my reply was to addressed the misconception about the thinness of the airfoil causing increased drag.