Rubber Band Powered Propeller Engines Kite
Rubber bands generate the power for these simple, but unusual vehicles. Make a propeller-powered sailing boat or racer car and learn the scientific principles that make them work. Kit contains everything needed to construct both boat and racer.
Rubber Band Powered Propeller Engines Kit Includes:
* Accessories to make up one propeller yacht (25cm tall) and one propeller racer (20cm long) at the same time.
* Instructions with fun facts included.
For ages 8 and up.
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