Robots on the Rampage (ROR) Join us on an adventure that requires creative thought, time management and team communication as groups build a diverse range of off-road vehicles that battle other robots, race against the clock and play tug of war! This class will discuss drive and follower gears and the various ranges of gear ratios. Can a fast vehicle out perform a robot with lots of power? Here is your chance to learn which gear ratios are associated with speed or torque. Chaos and Havoc rule the day in this ruckus of Robots on the Rampage. Robo-Roller Derby (RRD) The speed of a race, the competition of a battle, and the pressure of the clock… it’s a Robo-Roller Derby rumble! Lego robots take on a new set of hurdles as they duke it out on the track. Race the stop-watch and each other to be the first to complete all your laps without being torn apart in the challenge. Foul play is fair game in Robo-Roller Derby.