QS 17inch 4000W 273 (40H) E Scooter Export/V2 Type Hub Motor

Product Overview

Description

QS 17inch 4000W 273 (40H) E-Scooter Export/V2 Type Hub Motor

When placing order, pls. advise below points:

1. Voltage, RPM or kV 

2. Disc brake or drum brake

Thank you for your cooperation.

² Motor Spec 

More pictures of motor: 

 

²Speed Suggestion

The  voltage we could be 60v-144v, the max. speed can be customized to from 40-90km/h.

Rough calcuation formula of speed:

V=0.9*RPM*2πr*60/1000   V (KPH), RPM=un-load RPM, r=radius of tire

As Power=Torque*RPM/9.549, the more RPM is, the less torque it will be. 

 

Tips: Please advise Voltage & RPM when placing order, If there is no marking, we will make it 72V 896.50RPM.

We suggest to choose Balance/2nd model for mass production, as the repair rate of high speed model will be higher.

 

²Controller Suggestion

The power of controller should ≥ power of motor.

For 17inch 273 5000W motor(rated speed 40-90km/h), you could choose 120-140A(limited current) controller. 

When you using overvoltage, then the max. speed increased sharply, the real power is not 5000w. 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 KEB72801

Sine wave controller:   Lingbo Controller LBMC072402 /LBMC96502; Sabvoton Controller SSC96100

 

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

 

 

²CAD Drawing

  

For 17inch motor, we have 17x3.5inch size, it can match with tire 130/80-17.

Anyhow, if you want to match with other tire model, pls. feel free to contact with us.

 

More drawing: 

 

 

²Motor Kit 

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

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