My friend Sam and I built this ball machine over the past few days using the pieces left over from Blue Fox. This is, to my knowledge, the first 100% wind powered K'nex ball machine ever constructed. The 6 foot tall lift hill is powered entirely by a 3.5 foot diameter wind turbine made only with K'nex pieces. It has over 4,000 pieces, stands 8 feet tall and has 50 feet of track. It is equipped with an automatic transmission which ensures that no matter what direction the blades turn, the lift hill always goes the same way, doubling its overall efficiency.
We call it Don Quixote.