RE: Amp Draw?
Flypaper is correct in that when selecting a motor, one is generally interested in the power, whcih would be watts, not amps. Electric motors are differnet creatures than a IC motor in that if you add more prop load, the motor will put out more and more power, until the motor or soem system componet finally smokes. This is why electric motors and thier subcomponets will have a maximum safe rating. As long as all the componets in the system are not pushed beyond thier maximum ratings, you will be fine. They of course can be run at levels much below thier maximum ratings.