K'NEX 1996 Rubber Band Roller from STEM Forces, Enery, and Motion 78790

Discover the wonders of physics with this fantastic K'NEX 1996 Rubber Band Roller, a captivating engineering model from the highly acclaimed STEM Forces, Energy, and Motion educational set (#78790 / #10846099). This brilliant kit demonstrates fundamental scientific principles in an engaging, hands-on way. At its core, the Roller features an ingenious centralized rubber band drive axle. Simply roll the vehicle backward across any flat surface, and watch as the wheels expertly turn the axle, meticulously winding up the internal elastic band. This action brilliantly stores potential energy, ready for release. The moment you let go, the unwinding rubber band dynamically releases this stored energy as kinetic force, powerfully driving the substantial 'roller' forward with exciting momentum! This complete set arrives disassembled and includes its original instruction card, ensuring a fulfilling building experience. Please see pictures for details.