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Rotor Chopper

11/13/2014

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Based on an activity from Howtoons, this week the Little Creators built Ripcord Rotor Choppers using PCV, wooden dowels, kite string and emery boards. This was tremendous fun, but there were some challenges too.

This activity is the first in this series to allow students the opportunity to use the miter saw and drill press, all with supervision of course! While I pre-cut the PVC beforehand (it is loud and dusty), students cut the wooden dowels down to size, and drilled small holes into their makeshift handles. My design of the rotor chopper differs slightly from the Howtoons article. I added a handle to the end of the string, which provides more stability for students to pull hard on the ripcord. They also cut strings to proper length and hotglued their propellers. 

I knew the greatest challenge would not be in the build, but rather the use of the chopper. It took some practice winding the string correctly around the chopper, and learning how much force was necessary to get lift. We used the meadow so that students could launch the chopper from an elevated position.

Here's a slow mo vid of one in action. Love the diving attempt to catch it in the end.
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    This after school enrichment class is for 3rd through 6th graders.

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Creator's Studio by John Umekubo is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Westside Neighborhood School
5401 Beethoven Street, Los Angeles, CA 90066
www.wns-la.org