[arc25565]

Our team used the 20 inch nanotube form andymark. We put chain in the rail and connected it to an vex pro 2 cim ball shifter. We attached 8 inch pneumatic wheels to it and riveted a plastic board to the bottom. It worked pretty well except that no a couple of occasions the rivets holding the board on broke and got stuck on defenses. Also we had to replace one of the sprockets in the nanotube because it became stripped from a loose chain.