With its 14-horsepower electric motor, Joules "is so powerful, it could probably climb a tree," Morgan jokes. In fact, the motor would push too hard had he not added an electronic speed and current controller that limits it to 28 percent of its total horsepower. (It maxes out at 2,400 rpm, which is far too fast for a bike—pro cyclists usually crank at 100 to 110 rpm.) Morgan also managed to slow the rotation of the pedals to a more manageable maximum of 90 rpm, or an estimated top speed of 30 mph, by adding several rotating belts and chains to Joules's torso. That increased the torque as well, giving the robot enough power to carry the rider up the hill and beyond.