How Do You Build A Battery Powered Rubber Band Car?
There are many ways you can transfer mechanical energy in a motor to the wheels of a toy car. One of the most common is with a series of gears, but you can also obtain the same effect from a rubber band acting as a belt in a car motor. By looping two wheels together, you can make your battery powered car run with a rubber band instead of gears. Draw a base for the car on your base materials. Make a roughly rectangular shape–at least 6 inches by 4 inches–marking the front and back of the car as well as the left and right sides. Find the center of the rear line and draw a 1/2-inch wide, 2-inch long notch in the center. Draw any contours you wish to add. Cut out the shape of the car body, as well as the rear notch. Attach the axle holders, made of straws or eye hooks, to the bottom of the vehicle; either glue or screw them into place. Place one toward the front of the vehicle, and one across the notch on the back. Make sure the two are parallel to each other and perpendicular to the not
