The MULTIPLEX Challenger is the perfect introduction to the world of 3D aerobatics. The two large wings and fuselage of the high allow a low airspeed in all flight attitudes. The large control surfaces provide the necessary maneuverability. Thus, it is equally well suited for beginners as well as professionals. A "must have" for all biplanes and 3D -Kunstflugfans. The EPP model is built very robust and forgiving one almost every mistake. All kinds of aerobatic maneuvers are possible with the model.