Build six awesome bots that move without any batteries or electricity. The secret behind these fascinating machines is one of the oldest power sources in the world: wind! A full-color manual guides you in assembling six models one at a time from over 130 pieces.
Build a big-wheel tricycle, quadruped, soaring machine, drilling monster, walking robot, and even a wind-powered yacht
Step-by-step, illustrated instructions
6-in-1 engineering kit: build six wind-powered models and a handheld wind generator. Start cranking the generator and watch them go!