QS138 90h 4KW splined shaft (without sprocket)

QS138 90h 4KW splined shaft (without sprocket)

QS90 70h 1KW with tapered shaft


This motor is perfect for small electric motorbikes. This is the most compact version of the infamous 138 70h model. If you have a kids bike or a pocket rocket the qs90 might be right up your alley. With a small Diamater of only 4 inches, You can fit this motor in almost anything! Although this motor is tiny it is no slouch!

This motor is capable of over 5kW Bursts!

Key Features

  • Light weight and small dimension compared to other motors of similar power outputs
  • High Torque suitable for high performace high load situations such as climbing and racing
  • Supports regenerative braking
  • Proven reliability
Availability: In stock
QS90 70h 1KW with tapered shaft

QS120 2KW


Motor Type:  BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor
Motor Design: Single axle 
Matched Wheel: 10inch Wheel (as default)
Magnet Height: 80mm, 5 pole pairs
Diameter of stator: 120mm
Rated Power: 1000W
Rated Voltage: 60v or 72V as default
Speed: 60V@45KPH; 72V@55KPH
Max Torque:  Approx 25.2N.m without Reduction ratio, approx 134.0N.m with 1:5.3 Reduction ratio  
Max Efficiency: 90.5%
Thermal Probe: None as default (KTY83/122 is available, please let sales know if needed).
Phase Wire 6mm² Cross Section (not include insulation layer)
Hall Sensor: Single Hall Plate with waterproof connectors
Waterproof Grade: IP54
N.W./G.W.:   7.8kgs/9.1kgs  
Package Dimension: 34cm*34cm*33cm



More Information

More Information
SKU QS90 70h 1KW with tapered shaft