Here`s a few build specs on a beautiful Extra 330L 50cc RC Airplane kit with an 88.5" wingspan and 20x6 Classis Series Master Airscrew . The pre-fabricated laser cut built-up balsa/plywood frame covered with a Yellow/Red/Black drum tight Econocote came with enough hardware to attach long 5" servo arms, large add-on optioned 7" landing gear wheels replacing the stock 3.5" foam wheels, and other top-flite model aircraft parts that will make it fun to fly out at the RC Club. The kit arrived with an empty weight of about 15 pounds. After adding 7 servos & linkages, one for the throttle, 2 for the ailerons, 2 combined in line for the rudder, 2 for the elevator, and the engine weighing in at about 9 pounds with the additional plywood mount built-up, the plane finished at a total 25 pounds tare weight. The greater weight on a smaller engine will put this model aircraft in a sport class. With a larger engine and 26" prop, it could be a 3D aerobatic model.
