almost any plane will 3-d providing the wing loading is low and the throws are big. I have a video with Quique Zomensini (spellin?) torque rolling a 1/3 scale super cub. I had a thunder tiger lazy cub with an OS wankel rotary .30 size engine that hovered suprizingly well. I do like the idea of getting the 4* as a second airplane. Great airplane. In my opinion if you build it as light as possible and enlarge the elevator and rudder by adding counter balances it will 3-d. You might modify the control surface while you buid it and keep the throws low. As you get better you can move the CG back and add more throw. I dont see any reason why this wouldnt 3-d. Oh, everyone is right. This plane wasnt designed to 3d. WHO CARES. Many planes now adays the are designed to 3-d dont do it well (Funtana, Fun World 3-d, Fun star 3d, even the ucando suffers at serval manuvers.) I think if you build it light and right it should be just as good as those, especially for a 3d trainer. Good luck