How to Build a Rubber Band Motor

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When you stretch a rubber band and let it go, it zings across the room. Wouldn't it be great if you could harness some of that energy and use it to move a vehicle? You can. This rubber band motor uses the power of a rubber band to move a spool. You can attach this to a toy car or other vehicle to make it move as well!

Things You'll Need

  • Rubber band
  • Spool
  • Paper clip
  • Tape
  • Metal washer
  • Cotton swab
  • Pinch the rubber band between your fingers and insert it into the hole in the spool. Make sure the rubber band is sticking out of both sides of the spool.

  • Thread the paper clip through one end of the rubber band and tape the clip to the side of the spool.

  • Put the other end of the rubber band through the washer.

  • Insert the cotton swab into the loop of rubber band sticking out of the washer.

  • Twirl the cotton swab around and around until the rubber band becomes very taut.

  • Let go of the rubber band and the swab to see your motor run.

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