Rubber Band Race Car

Average rating of 0/5. (0 Ratings)
My rating
  • I love it!
  • I like it a lot!
  • I like it.
  • Just okay.
  • Not for me.

This flashy dragster is powered by what physicists call potential energy, energy created when the rubber band is wound up. When that potential energy is released, it becomes kinetic energy -- the energy of motion. Sort of like what you see in a room full of preschoolers at a birthday party!

What you'll need

  • hot glue
  • 3-inch piece of a wooden paint stick
  • 4 wooden clothespins
  • wooden paint stick
  • self-adhesive utility hook (such as 3M Command Adhesive Micro Utility Hooks)
  • acrylic paint and paintbrush
  • roll of pennies, covered with paper
  • pushpin
  • 4 wine corks
  • 2 1/2-inch section of a wooden skewer
  • 4 1/2-inch section of a wooden skewer
  • 4 (1 3/4-inch) pieces of a pool noodle with 5/8-inch diameter hole
  • 4 pony beads
  • 5 rubber bands (we used size #32)

How to make it

  1. First, make the body: Use the hot glue to attach the 3-inch section of the paint stick and the clothespins to the full-length paint stick. Attach the utility hook flush with the front clothespins, then paint the car. When the paint is dry, glue the penny roll in place. 

  2. To attach the wheels: Use the pushpin to start a hole in the center of each cork, then use the pointy end of a skewer to make the hole about 3/4 inch deep.

  3. To make the car go: After you've looped a rubber band around the rear axle as shown, be sure to give it a tug to tighten the loop -- this is key to making the car work. Wind up the rubber band by pulling the car back, then firmly hold the rear wheels and pick up the car (so the rubber band doesn't unwind). Repeat a few more times. Place the car on an open floor and let go. Experiment with looping on more rubber bands for longer car runs.

Use a Facebook account to add a comment, subject to Facebook's Terms of Service and Privacy Policy. Your Facebook name, profile photo and other personal information you make public on Facebook (e.g., school, work, current city, age) will appear with your comment. Learn More.
Most Popular on Facebook