neither one of my degrees is in engineering so I won't argue anything other than having built and played with several different dual brushless trucks I can attest you might get 4 hours you might get 40 hours but don't be suprised if it phases once and burns the spur, pinion or even shears off the motor shaft, with the big pop can sized brushless motors we have available there is no reason for 2 motors, let along one 1950 lehner or neu 1527 is probably enough while still being a "small" motor.