College of Agriculture, Engineering
and Science (CAES)

STEC@UKZN live experiment of the week – Balloon-Powered Car

Join us every week for a short fun science experiment.

This week: In the Balloon-Powered Car, we’ll show you how to build your own racer and then use air pressure to zip it across a surface.

What you will need for this experiment:

  • A piece of cardboard  about 7×15 cm e.g. from a box
  • A small lid or bottle cap
  • A piece of cardboard for the wheels (it should be large enough to fit 4 circles the size of your lid or bottle cap)
  • Tape
  • 1 balloon
  • 2 skewers
  • Scissors
  • Ruler
  • Pencil or pen
  • Straws

Please use last week’s login to join the fun. You don’t have the login details? Send an e-mail to

The event is finished.