Water Cooled QS 8000W 273 (50H) E-car Extra/V3 Type Hub Motor

 Water Cooled QS 8000W 273 (50H) E-car Extra/V3 Type Hub Motor

When placing order, pls. advise below points as detailed as possible.

1. E-scooter, E-tricycle, E-car, tire model?
2. Voltage and wattage of motor, Speed/RPM(kV), and torque/climb angle ? 
3. Your vehicle weight and loading weight? 
4. Lithium or lead-acid Battery?

Thank you for your cooperation.

² Motor Spec

²Controller Suggestion

The power of controller should ≥ power of motor.

For 273 8000W motor(rated speed 45-120km/h), you could choose 120-190A(limited current) controller. 

If for overvoltage using, the current can be improved to 290A. 

When you using overvoltage, then the max. speed increased sharply, the real power is not 8000w. The higher speed get for motor(overvoltage condition), the bigger limited current should choose for matched controller, when considering the starting acceleration capability and climbing performance.

If you don’t how to match controller, please don’t hesitate to contact with ue. We could also provide suitable controller.

Square Wave Controller: Kelly Controller  KEB72121, 

Sine wave controller: APT controller: AE96600

²Motor Design of inner configuration

There are three types, Normal/V1 type (low cost), Export/V2 type (Cost-effective) and Extra/V3 type (Best Performance).

1. Comparison between V1 and V2.

Holder: Iron(V1), Aluminum (V2) Hall: One hall with Normal connector(V1), Two halls with Waterproof connector(V2) Stator: V2 have a stronger configuration, more cooper, thicker section surface, energy saving in usage. Magnetic Steel Grade: V2 ≥ V1 Efficiency:  84~87%(V1) 86~88%(V2) In short, normal type is standard configuration, while export type is high configuration. The price differs because of the cost of raw materials.

 2. Comparison between V2 and V3.

The raw materials are alike, main difference in inner construction. For V3 (16 Pole Pairs):  stronger configuration than V2, wider lamination, more cooper wire/phase wire and thicker Cross-sectional area section,  bear more current in usage. Magentic Steel: V3 is wider and thicker.  Efficiency:  86~88%(V2) 88~92%(V3) Thus, V3 have best performance.

²Test Report

The kV could be customized, here is some test report for reference.  

More test report: 

²CAD Drawing

3D Drawing  

2D Drawing

The PCD & CB of Wheel could be customized.

More drawing: 

²Motor Kit 

We could provide suitable controllers, freewheel, brake disc, throttle etc.

For the moment, we could not provide wheel set & Spokes.