|Project by mbfunke||posted 03-16-2013 09:04 PM||4963 views||4 times favorited||7 comments|
Quinn, my son, was given a homework assignment to build a leprechaun trap. Last year we made a gentle trap that worked by confining leprechauns to a small apartment. Unfortunately, last year the leprechaun got away. Quinn decided that it would be better if we just shot the leprechaun, so he couldn’t run away. I mentioned that the point was to catch the critter alive, so that he could lead us to his gold. We decided that a nerf gun would be best.
The premise is simple enough. The leprechaun grabs the pot of gold and releases the small green car. The car rolls down a ramp and springs a mouse trap. Once sprung the mouse-trap pulls a string through a pulley. At the end of the string is a pin holding back a marble. So when the mouse trap springs, the marble releases down the marble race. At the end of the marble race the marbles fall into a bucket. The bucket is suspended by a wire attached to a pulley and another pin, so when the marble lands the wire is tugged through the pulley and the pin is pulled. Pulling this second pin releases a dowel to fall triggering the nerf gun.
The idea was simple, but pulling this off in a short period of time and in a portable fashion was a challenge. We used mostly things from around the house/shop and the kids loved it. So did many of the teachers.
<iframe src=”http://www.youtube.com/embed/6SOeRJrGn8A” frameborder=”0” height=”315” width=”560”></iframe>
-- Mike Funke