A method for estimating a force exerted by a first body onto a second body including the steps of providing a motor having at least one detectable motor signal, wherein the motor is adapted to advance the first body into engagement with the second body, determining a first value for the motor signal prior to the first body engaging the second body, determining a second value for the motor signal after the first body engages the second body, and generating a force value based upon a comparison of the second value to the first value.