For 171 8000W mid drive motor, it could be used for electric motorcycle, It could be 72V 120-130KPH.
The mid drive motor is old design, it's not available now.
Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor
Brand: QS Motor,QSMOTOR
Motor Design: Single axle
Matched Wheel: depends on customer, generally 17inch.
Magnet Height: 100mm, 5 pole pairs
Diameter of stator: 171mm
Rated Power: 8000W (peak power, pending)
Rated Voltage: 72V as default
No-load rpm: 3075rpm without flux weakening.
Max Torque: 94.2N.m (without Reduction ratio)
Max Efficiency: 92.3%
Continuous Battery Current: 120A (72V)
Peak Battery Current: approx 270A (72V)
Suggest Peak Phase Current: 550A
Thermic Probe: None (KTY83/122 is available for sample).
Working Temperature: pending
Single Hall Plate with waterproof connectors
16mm² Cross Section of Phase Wire (not include insulation layer)
Hall Sensor Phasing angle: 120 degree
Waterproof Grade: IP54
N.W./G.W.: 21.0kg/23.0kg Package Dimension: 43cmX43cmX33cm
P.S.: No-Load RPM could be customized to be 5000-6000RPM,
generally, it's 2000-3000RPM.
Test Report/Performance Curve
Appication (e.g. Electric Motorcycle)
QS Mid Drive Motor 8000W, Kelly KEB72121 Controller, Speed 120-130KPH, customizable
For details, refer to the hyperlink.