For QS 138 3000W V2 mid drive motor, it could be used for electric scooter, electric motorcycle.
It can be designed as belt driven(Default)and sprocket design(Customized).
It fits with 428 sprocket. We are able to supply 428 11T & 428 14T Sprocket, price is 7USD/PCS.
If you have interested in this product, you can contact with our sales directly.
Sales contact: firstname.lastname@example.org
Skype: Damon Wong(QSMOTOR)
We Chat:+86 18758618893
Aliexpress online purchasing link for this motor:
1). Simplify to make a electric-scooter. 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. Genearlly Spec:
2. Dimension Drawing
This is QS-138-3KW-V2 mid drive motor belt shaft motor.
New spline shaft, which can fit with our provided 428 sprocket more tighter, it can avoid shaft abrasion issue.
428 Sprocket optional for 11T & 14T.
Here is picture for 11T 428 Sprocket
3. Test report
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.
Conversion kits for QS 138 3KW V2 mid drive motor
We're able to supply Controller, display, dc-dc converter, disc brake system, twist throttle...etc.
For online purchasing link, please click the picture.
Application for QS-138-3KW Spline shaft mid drive motor