In this type of BLDC motor, the rotor of the motor is outside the house as well as the stator is inside. What this means is the placement of the stator and rotors are reversed. The subject areas mentioned in this post are what a DC electric motor is https://www.electricscooter.ltd/big-e-scooter-off-road-electric-scooter-double-motors-double-lights-20000w/