US Warehouse! QS138 70H V3 Mid Drive Motor for Electric ATV Dirtbike Motorcycle

For QS138 70H V3 mid drive motor with 1:2.35 gear box, it could be used for electric dirtbike, electric motorcycle, electric ATV 72V 100-105KPH with high torque. Compare with QS138 V1 and V2 motor, it's integrated with 1:2.35 gear box, which save space for double step transmission, with more torque.

e.g. Electric Dirt bike

E-motorcycle weight, approx 128kg+2*80kg

Speed: 100-105km/h @ 208kg

Gear ratio: 1:2.35*3 (1:2.35 integrated for 138 V3 motor, double steps transmission )

Climbing slope: 31° @ 50kph @208kg

Battery: 72V52h

Tire: 0.6138 130/70-17

Key Features

1) Light weight and small dimension compare to hub motor

2) High performance benefit from flux weakening

3) High effeciency during climbing, and better acceleration

4) Support regenerative braking

Pls note that there are some modify of QS138 3kw V3 motor:

Product description

Dimension Drawing:

Power train test Report:

Please noted:

Optional appearance, drawing, performance curve/test report are available.

If you need more technical information, please feel free to contact us.

We will give you reply in 12hours.

Matched controller recommendation:

Option 1:

EM150-2 sine wave controller

• Net weight: 2030g

• Rated current: 180A

• Boost current: 220A

• Peak current: 470A

• Max. Power: 12960W

• Flux Weaking Ratio: 100~250%

• Max. Efficiency: 88~93%

• Degree of protection: IP67

If you're interested in buying motor and controller together, please kindly click below picture.If you're interested in buying motor and controller together, please kindly click below picture.

Option 2:

EM200SP sine wave motor controller with standard CAN-BUS

Drawing for EM200sp ControllerDrawing for EM200sp Controller

Controller Wiring Definition

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.

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.

Conversion kits for QS 3kW belt driven mid dirve hub motor

We're able to supply Controller, Speedometer, Twist throttle..