Theese little motors have been a blast to use! Low power consumption, Low cost, These make great combat plane plane motors, If you like working with depron or other foams, or even smaller park flyer arfs you will get hooked on these in no time. I have two of these one is on a 13.5 oz. pusher jet with a 6-4 prop and at wide open for the entire flight the 1000 mah batery and motor are barely warm. Oh and by the way that set up is probably a 35 to 50 MPH plane that keeps up with most of the nitro planes at the field. I have really been hard on this little motor and after 100 plus flights still works like new. you do the math.