Roboteq recommends that you use Enigma Industries' Electric Drive Train Simulator. This amazing software will let you simulate your robot's components (motors, gears, batteries, wheels) and drive it around in a 3D arena. You will be able to view how much current is drawn in the various driving conditions. You will need to remember that if you see Amp loads above 120A (140A on the HE version) at times, the controller will automatically limit its output. Roboteq is collaborating with Enigma to incorporate a model of the AX2550 controller inside the simulator.