the motors look ok, but i'm not sure they could be used in our tanks, they have a voltage of 12volts, and you wouldnt get the best from them with 7.2v, i would recommend getting the jamara motors like what i use, i put a link up earlier in this thread for them, they are a fantastic motor and well priced as well, coupled them to a pair of 3.1 'boxes and they will give you a shed load of torque, just what our tanks need
Tony
