Build a motorized robot, race car, and countdown timer — all that run without any batteries or electrical power! Discover the physics concepts of potential and kinetic energy as you experiment with your spring-powered machines. Easy, snap-together assembly requires no glue.
Details:
The kit includes step-by-step illustrated instructions
3-in-1 engineering kit: build three self-powered models, then wind them up and watch them go
Learn about potential and kinetic energy and how gears and springs function in different mechanical devices
We process orders within 2-3 business days and you will receive a email notification when your order has shipped.
Shipping Options: Standard Ground: 3-7 business days Express Air: 2-3 business days (Not available for P.O. boxes)
Important Notes: We do not ship on Saturdays, Sundays, or U.S. Holidays. Deliveries may be subject to carrier delays, especially during peak times. Please note that Express Air is not available for P.O. boxes. Weekends are at the carrier's discretion for delivery.
If for any reason you are not satisfied with your purchase, you may return the item within 30 days of purchase. All credits will be made on the card originally used on the order, or in the form of store credit (for employee payment methods). ALL SALES ARE FINAL ON CLEARANCE MERCHANDISE; no returns accepted. You can also visit our full Return Policy for more information regarding refunds etc.