This video about my experiment to find out how strong A2212 1400kv BLDC motor work in 3s (11.1volts) with 4x4.5 prop, 5x4.5 prop, 6x4.5 prop, 7x4.5 prop, 8x4.5 prop, 9x4.5 prop, 10x4.5 prop, 11x4.5 prop and 12x4.5 prop. The running test only about 10seconds for avoid damage to the BLDC motor due to mismatched propeller. The result may vary to your experiment for several reason. If you any suggest or comment please write on the comment column above.