QS 3000W 138 70H electric mid drive motor and controller kits for electric motorcycle

Quanshun 72V 3000W 138 70H electric bike mid drive motor

For 138 3000W mid drive motor, it could be used for electric scooter, electric motorcycle.

It could be 72V 100KPH, only avaiable for 12inch wheel kits (We might make bigger wheel & more powerful motor in near future.)

We also could provide you 1000w 90 mid drive motor and 2000w 120 mid drive motor.

At the same time, it also can use with gear chain.

Kits including

1*QS Motor 3000W 138 70H Mid Drive Motor

1*Voltol EM 150SP 

QS Motor Specification

• Item: QS Motor 3000W 138 70H Mid Drive Motor
• 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: 138mm
• Rated Power: 3000W (peak power, pending) 
• Rated Voltage: 72V as default
• Speed: 100KPH 
• No-load rpm: 3800rpm without flux weakening, 6000RPM with flux weakening.
• Max Torque: approx 56N.m without Reduction ratio, approx 223N.m with 1:4.77 Reduction ratio  
• Reduction ratio: 1:4.77 (as default)
  
• Max Efficiency: pending
• Continuous Battery Current: pending (72V)
• Peak Battery Current: 120A (72V)
• Suggest Peak Phase Current: 450A
• Thermic Probe: None as default (KTY83/122 is available for mass production).
• 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
• Color: Black 
• N.W./G.W.: Pending   Package Dimension: Pending/piece  

Pictures Show

Drawing(for normal)

Controller

1). Very Easy connect

2). Can match with almost brushless DC motor

3). Soft start can be adjusted

4). Programmable by bluetoot

Application

Performance Test

basic RPM

With flux weakening

With belt ratio 1:4.77

How to Recommend you suitable motors? 

Firstly, To customize a suitable electric hub motor for your vehicle, could you please inform the points in below?

1. E-bike, E-scooter, E-tricycle or E-car? 

2. Weight of vehicle with battery, loading weight (weight with load only)? 

3. Tire model/diameter? 

4. Rated voltage and wattage of motor, nominal speed/top speed, and climb angle or torque @ what speed? 

5. Battery nominal voltage, peak voltage, capacity and vehicle range? 

6. What's the drop-outs/rear fork width of your frame?

Within your details information, we could make assessment and calculation accordingly for your project