[Veselin Kolev]

Okay, let me rephrase my idea.
My original comment was that our team's motors didn't heat up because we used the drills + chippies. And that they help each other out to not overheat.

Most robots draw the most current while pushing other robots, and more current results in more heat. They draw even more current because their wheels stop spinning sometimes if they only use the drills. We used 4 motors, and if you run the robot into another, (or into a wall) the wheels will burn away freely at the ground, preventing the motors from stalling out and drawing crazy current. Meaning that if you used more motors, they provide enough power together so they can never stall out.

Gearing this kind of system for speeds upward of 15 ft/sec could result in stall since they aren't geared for power at such low speeds. But few teams actually did use similar gearing.