QS 2kW 70KPH 72V 12inch Mid Drive Motor Kits Assembly

For 2000W mid drive motor kit assembly, it could be used for electric scooter, electric motorcycle. 

e.g. M3 electric motorbike

E-motorbike weight, approx 115kg+2*80kg

Speed: continuous 70km/h

Gear ratio: 1:4.77

Battery: 72V40h NCM lithium battery

Tire: 130/70-12

One set including below kits

·1pc QS 12inch 2000W Mid Drive Motor assembly with Left/Right fork(Disc Brake and tire are not included)

·1pcs X Votol EM72100SP sine wave motor controller with standard CAN-BUS

·1pcs X DKD LCD speedometer

·1pcs X Z6 throttle with combination switch

Key Features
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). Support regenerative braking

4). High efficiency: 85~92% 

Product Description

1. QSMOTOR 12X3.5inch 2000W 120 70H Mid Drive Motor Assembly

·Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor

·Brand: QS Motor, QSMOTOR

·Motor Design: Single axle

·Matched Wheel: 12inch Wheel (as default)

·Magnet Height: 70mm, 40pcs, 5 pole pairs

·Diameter of stator: 120mm

·Rated Power: 2000W

·Rated Voltage: 72V as default

·Speed: 70KPH

·No-load rpm: 2800rpm without flux weakening, 4400RPM with flux weakening.

·Max Torque: approx 45.4N.m without Reduction ratio, approx 216.7N.m with 1:4.77 Reduction ratio  

·Reduction ratio: 1:4.77 (as default)

·Max Efficiency: 88%

·Continuous Battery Current: pending (72V)

·Peak Battery Current: 60A (72V)

·Suggest Peak Phase Current: 250A

·Thermal Probe: None as default (KTY83/122 is available, if you need, please let sales man know).

·Working Temperature: Pending

·Single Hall Plate with waterproof connectors

·8mm² Cross Section of Phase Wire (not include insulation layer)

·Hall Sensor Phasing angle: 120 degree

·Waterproof Grade: IP67

·Color: Black

·N.W./G.W.: 10.8kgs/11.5kgs   

·Package Dimension: 34cm*34cm*33cm

·Axle matched with belt as default