QSJ138A-70 Mid Drive Motor with APT72400 72V Conversion Kit
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: 72V52Ah
Tire: 0.6138 130/70-17
If you have interested in this product, you can contact with our sales directly.
Sales Contact: damon@siaecosys.com
Skype: Damon Wong(QSMOTOR)
What’s app: +86 18758618893
Aliexpress online purchasing link for this motor:(Click the photo for hyperlink)
One set including below items
Combo 1
1. 1pcs X QS 138 3kW V3 Mid drive motor( 3800RPM) with 15T 428 sprocket adapter
2. 1pcs X APT72400 Controller
3. 1pcs X DKD LCD Speedometer
4. 1pcs X Z6 throttle with combination switch
5. 1pcs X Sound wave simulator
Combo 2
1. 1pcs X QS 138 3kW V3 Mid drive motor( 3800RPM)with 15T 428 sprocket adapter
2. 1pcs X APT72400 Controller
3. 1pcs X DKD LCD Speedometer
4. 1pcs X SiAECOSYS Throttle kits with Accelerator
5. 1pcs X Sound wave simulator
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
1. QSJ138A-70 3000W Mid Drive Motor:
Drawing
Test Report
2. APT72400 72V Sine Wave BLDC Motor Controller
There are two color options（red/black), the picture is for reference only.
Spec
Protection grade: IP65
Operating voltage range: 30~92V
Protect Phase Current: 330A
Max DC Current: 150A
Communication mode: RS232C
Position feedback signal: Hall 120°
Protection mechanism: under pressure, over pressure, over current, over heat
Drawing
Wiring Definition
3.DKD LCD speedometer
4. Z6 throttle with combination switch
With Reverse, Parking button( throttle on/off), 3 slide switch gear, s/boost button, Light and Horn.
5. SiAECOSYS Throttle kits with Accelerator
Accelerator mostly used for Chinese electric scooter, it will not change top speed, but it will reduce the accelerate stroke.
Size
6. Sound wave simulator
EV Your Life!
