Motor thrust doesn't match datahsheet


I have been having this issue for a while and have got no idea what is going on. I have a set of EMAX 1400kv motors, which the datasheet says will provide me with 500g of thrust each when given 8V 9.1A and using a 8x4 prop. I have a 11.1V 1550mAh 3Cell battery(fully charged) and it is only giving me 300g of thrust. Does anyone know why??


You will have to measure current and amp’s in order to check the motor.

Kind regards,

Which Emax 1400kv motors?