[JagWire]

Originally Posted by Cyberphil

Did anyone else see the size of that fan? Do you really think that would be worth buying 30 of those for a little bit more propulsion? Personally, I think its a waste of time, and how can we have tank treads if the rules state: "The ROVER WHEELS must be used in a “normal” orientation (i.e. with the tread of the wheel in contact with the ground, with the axis of rotation parallel to the ground and penetrating the wheel hub). No other forms of traction devices (wheels, tracks, legs, or other devices intended to provide traction) are permitted."

I think they were referring to what is called "tank drive" which you can think of like driving a bulldozer, only without the tracks, just the wheels. The wheels on one side would operate together independently from the other side.