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Published on Feb 26, 2012
This is yet another experimental K'nex ball machine based on a random idea I had. The machine spins an off-center continuous vertical loop of track at just the right speed to sustain a ball rolling around it. It was designed and built in 2 hours from about 500 pieces. Due to the high torque required to spin the loop, two 12V motors were used to power the same shaft.