For 138 70H motor powertrain kits, it could be used for electric motorcycle, which could be 72V 100KPH.
e.g. Dirt bike
E-motorcycle weight, approx 130kg+2*80kg
Speed: continuous 110km/h
Gear ratio: 1:3.43
Climbing slope: 30°@208kg
Tire: 0.6138 130/70-17
P.S. If you have any confused about the shipping cost, please feel free to contact with us.
Also could place order but don't pay first, then we could adjust the price.
Sales Contact: Damon@siaecosys.com
Skype: Damon Wong(QSMOTOR)
We Chat:+86 18758618893
Aliexpress online purchasing link for this motor:
One set including below kits
1. 1pc X QS 138 3kW Mid drive motor with sprocket design(V1 or V2 optional, belt or spline shaft optional)
2. 1pcs X ND72660 sine wave motor controller with LIN
3. 1pcs X SIAYQ bluetooth adapter
4. 1pcs X CT-22 Speedometer
5. 1pcs X Z6 throttle with combination switch
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%
1. QSMOTOR 138 3000W Mid drive motor
428 Sprocket optional for 11T & 14T.
Here is picture for 11T 428 Sprocket
2. ND72660 sine wave motor controller with LIN
SIAYQ series controller is sine wave type controller, which is brushless DC controller with self-learning function.
Generally, it matches well with QS Motors, if you want to match with new brand motor, some parameters should be tested by yourself.
Drawing for ND72660 Controller
Controller Software Interface
3. CT-22 Speedometer
1. Speedometer Size: 185mm*90mm*80mm
2. Net Weight: 0.35kg
3. Work Voltage: 48v-120v rated
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 controller well.
Application for QS-138-3KW Spline shaft mid drive motor