QS 138 90H 4000W QSD138A-90 72V V1 Air Cooled Electric PMSM Mid Drive Motor 

It can be designed as belt driven(Default)and sprocket design(Optional).

 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/We Chat: +86 18758618893  

Aliexpress online purchasing link for this motor:(Click the photo for hyperlink) 

 Key Features 

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%

 Product Description 

1. Genearlly Spec:

Axle matched with belt(as default). 428 14T sprocket with adapter is available.

2. Dimension Drawing:

3. Test Report:

QSMOTOR QSD138A-90 Conversion Kits 

We’re able to supply controller, display, dc-dc converter, disc brake system, twist throttle…etc.

For Alixpress online purchasing link, kindly click the following picture.

Application for QSMOTOR QSD138A-90 Conversion Kits