I am making a 2 wheel drive robot.
Suppose I know that my robot is going to weight x kg when finished and I know the diameter of the wheels y (geared motors will be connected directly to the wheels). I can choose from several geared motors and I know the peak torque of each motor and the idling speed.
How can I calculate the load that a specific motor can take? I.e. will a motor with a given torque be able to move my robot without being too overloaded? What rpm will the motor have when it has load?