For 138 3000W sprocket design mid drive motor kit assembly, it could be used for electric light motorcycle, which could be 72V 100KPH.

e.g. Dirt bike

E-motorcycle weight, approx 130kg+2*80kg

Speed: continuous 100km/h

Gear ratio: 1:2.3*3 (double steps transmission )

Climbing slope: 30°@208kg

Battery: 72V52h

Tire: 0.6138 130/70-17

For 138 3kW new appearance  V1  version mid drive motor

V1 Belt Type:

V1 Sprocket Type:

For 138 3kW new appearance  V2  version mid drive motor

V2 Belt Type:

V2 Sprocket Type:

One set including below kits

Combo 1:

1. 1pcs X QSMOTOR 138 3000W PMSM IPM V1/V2 mid drive motor belt type

2. 1pcs X Votol EM150SP sine wave motor controller with standard CAN-BUS

3. 1pcs X DKD LCD speedometer

4. 1pcs X Foot throttle pedal

Combo 2:

1. 1pcs X QSMOTOR 138 3000W PMSM IPM V1/V2 mid drive motor sprocket type

2. 1pcs X Votol EM150SP sine wave motor controller with standard CAN-BUS

3. 1pcs X DKD LCD speedometer

4. 1pcs X Foot throttle pedal

5. sprocket 14T (default), else teeth (11T-17T) , please remark when place order

Combo 3:

1. 1pcs X QSMOTOR 138 3000W PMSM IPM V1/V2 mid drive motor belt type

2. 1pcs X Votol EM150SP sine wave motor controller with standard CAN-BUS

3. 1pcs X DKD LCD speedometer

4. 1pcs X Foot throttle pedal

5. 1pcs X Vehicle Wiring suitable for EM50sp-EM150sp controller

Combo 4:

1. 1pcs X QSMOTOR 138 3000W PMSM IPM V1/V2 mid drive motor sprocket type

2. 1pcs X Votol EM150SP sine wave motor controller with standard CAN-BUS

3. 1pcs X DKD LCD speedometer

4. 1pcs X Foot throttle pedal

5. sprocket 14T (default), else teeth (11T-17T) , please remark when place order

6. 1pcs X Vehicle Wiring suitable for EM50sp-EM150sp controller

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

Product description

Genearlly specification

PS. It can be designed as belt driven and sprocket design (as default ).

If you only interested in buying mid drive motor, please click below picture for the purchasing link.

Dimension Drawing:

QS 3kW 138 mid drive motor(new appearance, belt design)

Power train test report:

For single motor without flux weakening, approx 55N.m peak

For single motor with flux weakening, approx 54N.m peak

2.Votol EM150SP motor controller with standards CANBUS

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

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 electricicy always.

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

4.  Foot throttle pedal

5.Vehicle Wiring suitable for EM50sp-EM150sp controller

Wiring Diagram

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.

Application for 3kW old appearance mid drive motor