It has 2 pieces of hall wire, that is if one hall broke, another one can instead. so you don't need to be worried about the hall problem.
1). Simplify to make a electric-scooter. Gearbox, transmission shaft, clutch are no need. Which save space.
2). It could be installed in the rear to save more space for battery.
3). High efficiency: 85~92%
* Motor Type: BLDC Permanent Magnet Outer Rotor In-Wheel Hub Motor With Hall Sensor
* Brand: QS Motor,QSMOTOR
* Motor Design: Double axle without rim (not integrated), 36 spoke holes, OD 4.2mm
* Matching Rim size: 24inch, 26inch E-Bike Wheel, 17inch, 18inch, 19inch moped wheel.
* Magnet Height: 50mm, 16 pole pairs
* Stator: Aluminmum Core
* Rated Power: 8000W
* Rated Voltage: 72V as default (48V-96V, optional)
* Speed: 120KPH as default (24-120KPH, optional)
* Max Torque: approx 350N.m
* Max Efficiency: 86-91%
* Continuous Battery Current: 110A (72V)
* Peak Battery Current: 150-200A (72V)
* Suggest Peak Phase Current: 300-650A (depend on the kV)
* Thermic Probe: KTY83/122 (as default, optional)
* Working Temperature: 70-120℃ , peak 150 ℃
* Brake type: Bike Disc brake, PCD3*80mm(as default)
* Drop-outs/Rear Fork Width for installation: 200mm
* 14mm axle flats
* Dual Hall Sets
* 16mm⊃2; Cross Section of Phase Wire (not include insulation layer)
* Hall Sensor Phasing angle: 120 degree
* Waterproof Grade: IP54
* Color: Black (as default), White/Luminous (extra $5.0)
* N.W.: 21.5kg