QSMOTOR QSJ138D-90

QSMOTOR QSJ138D-90 4000W V3 Mid Drive Motor With Internal Gearbox

For QS-138-4KW-V3 mid drive motor, it could be used for electric light motorcycle, which could be 72V@100KPH.

• Application: e.g. Dirt bike
• E-motorcycle weight: approx 128kg+2*80kg
• Speed: Continuous 100km/h
• Gear ratio: 1:2.35 (single steps transmission )
• Climbing slope: 25°@5kph @208kg
• Battery: 72V40ah lithium
• Tire: 130/70-17

It fits with 428 sprocket. We are able to supply 428 15T, price is 7USD/PCS.

  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:

 

2. Dimension Drawing:

3. Test Report:

Only for reference（Due to the limitation of test machine，the maximum torque is not reached.）

QSJ138D-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 QSJ138D-90 mid drive motor