Build five fun gadgets and learn about gears and transmissions.
●Create a helicopter model with a rotor that spins using a rubber band-powered motor.
●Assemble a spinner toy that you wind up to launch a fast-spinning top.
●Make a centripetal force machine that flings its arms outward at high speeds.
●Build a hand mixer that demonstrates a gear train.
●Construct a cool aircraft launcher that flings a model vehicle across the room on a zipline.
A 32-page manual guides your model building and experiments with step-by-step illustrated instructions.