How to Build a Lego Car With a Motor

Building anything out of LEGOs can be very fun and rewarding--especially for your child. Learning about car mechanics at an early age can set a child up for great learning experiences later but making the car they worked on move--that is priceless. This article will show you how to create a simple force reaction motor for a LEGO car.

Difficulty: Easy

Instructions

Things You'll Need:

• LEGO car kit
• Rubber band

1. Purchase a LEGO car kit.

2. Assemble car.

3. Insert one end of the rubber band into the hole in the axle.

4. Bring the loose end of the rubber band over and through the loop of the other rubber band and pull toward the other axle.

5. Slip the other end of the rubber band through the second axle.

6. Stretch it and loop it under then insert the loop and pull to form a knot.

7. Rotate the front gear of the car to twist the rubber band and set the car on the floor and let go.

Tips & Warnings

• You can also cut the rubber band and tie the ends around the holes in the drive train.
• Try eliminating the axle bars all together and tie the ends of the rubber band around the wheel bars.
• You can experiment with speed and velocity by trying out different sizes of rubber bands.
• When working with rubber bands be careful not to exceed their strength or they can snap and hurt you.