QS 3000W 205 (50H) E-bike Spoke Export/V2 Type Hub Motor

QS 3000W 205 (50H) E-bike Spoke Export/V2 Type Hub  Motor  

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

1. E-bike or E-scooter, tire model?
2. Voltage and wattage of motor, Speed, 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 

It could also be customized to be white, which cost USD 20.0 more.

More pictures of motor: /sh/iuzopgodx2bjpkp/AADYdBRGdoexI8nwtGAkTu1Ua?dl=0

²Speed Suggestion

The  voltage we could be 48v, 60v,72v, 96v, the max. speed can be customized to from 30 to 85km/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. 

Here is Parameter base on 24inch e-bike wheel for reference.

Tips: Please advise Voltage & RPM when placing order, If there is no marking, we will make it 72V 650RPM.

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 205 3000W motor(rated speed 30-70km/h), you could choose 50-80A(limited current) controller. 

If for overvoltage using, the current can be improved to 120A-150A. 

When you using overvoltage, then the max. speed increased sharply, the real power is not 3000w. 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 KEB72601X,

Sine wave controller: Sabvoton Controller SSC72100 & Lingbo Controller LBMC072252.

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

More test report:  /sh/9p6rp0zf102r151/AAAJpugehGNiW-SxnJr95lWja?dl=0

²CAD Drawing

Brake: PCD6*44mm for e-bike disc       

Drop-outs: 150mm

Thread: B 1.375*24G English Thread 

Spoke Hole:  4.2mm hole suit 8G/9G/10G spoke, 3.4mm hole suit 12G/13G/14G spoke.

Tips: Please advise the Spoke size & thread model when placing order, or we would make 4.2mm spoke & provide English Thread as default.

More drawing: /sh/j2mibd6rwvq3o5a/AADgu5WFD5MDKB17t3EGZduka?dl=0

²Motor Kit 

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

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