The Power System
Modulex uses four Quickie Salsa M2 wheelchair motors, capable of 6mph and running on 24 volts. Their electromagnetic brakes have been removed to prevent damage to the motors, as there is nothing keeping the brakes open. So it's easier to just remove them entirely.
These motors are just using regular powerchair wheels, but due to the motors being mounted closer to the outside of the bot, these wheels are easily interchangeable.
Quickie Salsa M2 motors were chosen simply because Mitchi's younger brother has a wheelchair that uses the same motors! (Don't worry, we got ours from eBay; no theft was needed!)