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I had actually tried it with one car, but it doesn't work. With two cars, you get double the potential energy as they go up the hill and therefore, more kinetic energy. Physics are key on this one
awesome build, dude. The only thing I was missing was the part that connects the two cars together. However, I was able to get a rubber band, cut it, tie knots on both sides, and thread the knots into the holes on the bottoms of the cars. Thanks to a youtube video that I looked up.
Knex Plane (100% Realistic)
Knex Chain Elevator View Instructable »
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