Drone Propeller Maintenance

  When the drone is being used and the propellers can't be unfolded, the motors are stuck, be sure to follow these instructions.   When the propeller is  either too loose or too tight, we can loosen the propeller's fixing screws a little and then spray some WD40, likewise do the same for the other side of the propeller.   Then pinch the propeller clamp, up and down to move the blade when there's no gap, in accordance with the e blade leading edge movement within 30 degrees smooth.   Spraying WD40 is only a temporary solution, if you want to maintain long-lasting smoothness, grease is a good choice and the lower limit of the temperature of it is at minus 20 degrees Celsius, the higher the upper limit of the temperature, the better, we choose to use gr...