4M Wind Powered Racer Building Kit for Kids Ages 10-12 – DIY Propeller Car with Electric Motor, Learn Newton's Laws of Motion, Aerodynamics & Thrust, STEM Engineering Toy Gift

💨 BUILD A HIGH-SPEED PROPELLER CAR → FOR AGES 10-12: Assemble your own wind powered racer that zooms across smooth surfaces using nothing but air propulsion! The electric motor spins the propeller, pushing air backward and launching the car forward. Watch Newton's Third Law in action – for every action, there is an equal and opposite reaction!

🔧 COMPLETE BUILDING KIT WITH 30+ COMPONENTS: Includes racer body, rear axle support, long axle, motor holder, motor cover, electric motor, battery case, back wheels (2), front wheel, propeller, metal eyelets, terminal caps, and 21 screws. Requires 4 AAA batteries and a small crosshead screwdriver (not included). Hands-on engineering at its best!

⚙️ PERFORMANCE OPTIMIZATION & TROUBLESHOOTING. Adjust wheel alignment for straight-line racing. Add cooking oil or lubricant to the axles for smoother operation. If your racer moves backward, swap the wire connections to reverse propeller direction. Learn how friction affects speed and how small adjustments make big differences!

📚 LEARN NEWTON'S THIRD LAW & AERODYNAMICS: The angled propeller blades push air backward, and the air simultaneously pushes the racer forward with equal force. This is the same principle that powers airplanes, hovercrafts, and jet engines! Understand action-reaction forces through hands-on experimentation.

🎁 PERFECT STEM GIFT FOR FUTURE ENGINEERS AGES 10-12: Ideal for birthday gifts, homeschool physics lessons, or science fair projects. This propeller car builds mechanical assembly skills, problem-solving abilities, and understanding of aerodynamics, thrust, and energy conversion. Adult supervision recommended. Hours of building, testing, and racing fun!