THE FLYING DRAGON FLY

You pull the string down, but the dragon fly mysteriously zooms up instead, wings fluttering.

This design is adapted from an old tin toy that featured a monkey that climbed a string. This dragon fly is variation is simpler and it still demonstrates an extreme application of mechanical advantage to do exactly the opposite of what it seems it should do. The fast spinning wings add a nice touch. It is the perfect reincarnation for half-gallon milk cartons.

INSTRUCTIONS

For illustrated instructions for building a dragonfly with mechanical advantage click here or on the picture.

MORE ABOUT MECHANICAL ADVNTAGE

For explanations, activities and cool links related to the dragonfly click here or on the picture.

 

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I'd like to know how this project goes for you. I'm happy to answer questions about it. Feedback from you is an important way for me to know what works and what needs clarification.
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