QS 120 2kW 70KPH 72V 12 x 3.5 inch Mid Drive Motor Assembly Kits

Please noted that tire and disc brake system is not including as default.

NOTE:
1.Orders do not include customs duties, which are borne by the buyer.(Except for some aliexpress marked orders including tax).
2.For some special countries with strict customs for import, so pls. confirm it firstly to us that you have ability to do customs clearance, otherwise we will not take on heavy responsibilities for this issue, return money and goods are not support. (special countries list contact seller)

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

Combo 1

·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

Combo 2

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

Combo 3

·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

Key Features

1). Simplify to make a electric-motorcycle. 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

Genearlly Spec:

1. Item: QS Motor 2000W 120 70H Mid Drive Motor

2. Motor Type:BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor

3. Brand: QS Motor, QSMOTOR

4. Motor Design: Single axle

5. Matched Wheel: 12inch Wheel (as default)

6. Magnet Height: 70mm,40pcs,5pole pairs

7. Diameter of stator: 120mm

8. Rated Power: 2000W

9. Rated Voltage: 72V as default

10. Speed: 60KPH

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

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

13. Reduction ratio: 1:4.77 (as default)

14. Max Efficiency: 88%

15. Continuous Battery Current: 35A (72V)

16. Peak Battery Current: 60A (72V)

17. Suggest Peak Phase Current: 250A

18. Thermic Probe:KTY83/122 as default

19. Working Temperature: Pending

20. Single Hall Plate with waterproof connectors

21. 8mm² Cross Section of Phase Wire (not include insulation layer)

22. Hall Sensor Phasing angle: 120 degree

23. Waterproof Grade: IP67

24. Color: Black

25. N.W./G.W.: 7.8kgs/9.1kgs

26. Package Dimension: 34cm*34cm*33cm

Dimension Drawing:

• QS 2kW 120 mid drive motor

Test report:

EM72100SP Controller Description:

Specification

·Sine wave controller, programmable, with regen function

·Rated Current:100A

·BOOST Current:130A

·Peak Current:330A

·Max.Power:7200W

·Flux Weakening Ratio:100~250%

·Max.Efficiency:88~93%

·Net weight: 1650g

·Waterproof IP67

Dimension drawing:

3. DKD LCD speedometer, can-bus(optional, LIN as default)

It display D N R, P, S gear, and battery current X5/10.

P.s.: If the working battery doesn't have can-bus communication, then the can-bus speedometer will shows lack of electricity always.

So, we suggest to do the speedometer as Line communication version if client can't get can-bus battery.

4. Z6 throttle with combination switch

With Reverse, Parking button( throttle on/off), 3 slide switch gear, s/boost button, Light and Horn.

It match with VOTOL controller well.

5. Vehicle Wiring suitable for EM50sp-EM150sp controller

The ignition key cann't be pluged with the wiring harness directly due the difference of connectors, please contact the seller for the diagram and modification instruction.

Wiring Diagram

Application for QS 120 2kW mid drive motor