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Simple Rubber Band Driven Bathtub (Speed) Boat — image 1
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Simple Rubber Band Driven Bathtub (Speed) Boat

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Bathtub boat has a garbage can rubber band that turns a propeller that drives the boat. It’s surprising how far it goes.

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Wind up the propeller to see how far the toy boat will travel in your bathtub or pool.  As shown in one photo, it almost made it to the end of the junior Olympic pool and won the competition at the Univ of North Georgia.  The 12" rubber band was purchased from Amazon under the title “Supersize bands, oversized rubber bands for big jobs” for $10.05. 
 

the paddles press fit into the hub, but I needed to super glue them.

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