utf8 QS 273 40H V3 Motor - QS MOTOR,QSMOTOR

QS Motor 4000W 273 40H V3 E-bike Spoke Hub Motor

Price:US $465.00/piece
Production Period:12~13 working days
QS Motor Drawing1

QS Motor 273 Bicycle Hub Motor 4000W V3 100KPH For Electric Bicycle


1. Generally SPEC

  • Motor Type: BLDC Permanent Magnet Outer Rotor In-Wheel Hub Motor With Hall Sensor
  • Brand: QS Motor,QSMOTOR
  • Motor Design: Double axle without rim (not integrated), 36 spoke holes, OD 4.2mm 
  • Matching Rim size: 24inch, 26inch E-Bike Wheel, 17inch, 18inch, 19inch moped wheel.
  • Magnet Height: 40mm, 16 pole pairs
  • Stator: Aluminmum Core
  • Rated Power: 4000W 
  • Rated Voltage: 72V as default (48V-96V, optional)
  • Speed: 80KPH as default (24-120KPH, optional) 
  • kV: 11.46/12.46/13.54/15.69/17.71etc.
  • Max Torque: approx 182N.m
  • Max Efficiency: 86-91%
  • Continuous Battery Current: 55A (72V)
  • Peak Battery Current: 111A (72V)
  • Suggest Peak Phase Current: 196-245A (depend on the kV)
  • Thermic Probe: KTY83/122 (as default, optional)
  • Working Temperature: 70-120℃ , peak 150 ℃ 
  • Brake type: Bike Disc brake, PCD6*44mm(as default)
  • Drop-outs/Rear Fork Width for installation: 152mm
  • 14mm english thread length for single/3 speed freewheel
  • 10mm axle flats
  • Dual Hall Set with waterproof connectors
  • 16mm⊃2; Cross Section of Phase Wire (not include insulation layer)
  • Hall Sensor Phasing angle: 120 degree
  • Waterproof Grade: IP54
  • Color: Black (as default), White/Luminous (extra $5.0)
  • N.W./G.W.: 18.2kg/20.0kg  
  • Package Dimension: 43cm*43cm*41cm/piece

P.s.: Temp Sensor Options: KTY84/130, KTY83/122, 10K@25C NTC(model MF58-103F3950).

For windings of 273 40H V3 motor

273 40


2. QS Motor Notice Before Order (Producing time/Warranty/Package/Certification etc.)

Pls. click below hyperlink of picture.


3. CAD Drawing


Brake: PCD6*44mm for e-bicycle disc    

Drop-outs: 152mm 

Spoke Hole: 4.2mm hole suit 8G/9G/10G spoke


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


4. Test Report

Here is one test teport of our 273 4000w V3 hub motor, 72v 700rpm.

If you want to check other test report with different kV value, pls. contact with our sales freely.

  QS 273 40H 72V4000W 700RPM V3 Spoke Motor Test


5. Questions before order



6. 273 E-Spoke Hub Motor Bicycle Application

It's QS electric In-Wheel Bicycle Spoke Hub Motor for Conversion Kits, which power range from 3000w to 4000w rated, drop-outs 152mm with bicycle disc brake.

Especially suit for electric bicycle, max. speed for 60km/h to 120km/h.



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