I used a watt meter and found everything OK,but when I started to carry this procedure out, the motor smoked and burnt out.BRC checked the motor and speed controller,and supplied anew motor FOC. This problem seems to have come along after several flights and I wonder if the speed controller may have been damaged in some way during one of my crashes.If you gently increase throttle,its ok but if you give full throttle as in taking off it initially moves off then effectively screeches and stops dead.Ihavent tried to fly it again until I eliminate this problem