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  1. F

    Built challenge

    I have a suggestion for a building challenge where you have to build a free flight glider that is launched in the discus style and here is the trick you have to design a mechanical stabilization system that will keep the plane flying level ex. A weighted pendulum that moves the elevator to keep...
  2. T

    does any one know where to buy a mechanical elevon mixer

    I need I have elevon's on my plane but my radio can't do mixing so is it possible to get a elevon mixer.