I have 2 Team Aircraft, Zmax(they are like a 3/4 scale Piper Cub). About 100ft roll for takeoff, stall speed 29mph. Flew perfect, didn't need any trim tabs. 600ft is a nice length for ultralight runway with no obstacles. Be careful with winds aloft when getting above treetops along runway. If interested contact me. There is a nice EAA airshow in Lakeland, Fl. every time I went there were quite a few ultralight planes.