Workday Essential｜ Other Products ｜QS90 (1000W)

This motor is perfect for small electric motorcycles. 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 diameter 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 7kW Bursts! 
Includes
1- X QS 90 1kW Mid drive motor (tapered shaft with key) with 14t 428 sprocket

Key Features 

Light weight and small dimension compared to other motors of similar power outputs
High Torque suitable for high performance high load situations such as climbing and racing
Supports regenerative braking
Proven reliability

Compatibility
EM-50 Controller
Specification
Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor Brand: QS Motor, QSMOTOR 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). Hall Sensor: Single Hall Plate with waterproof connectors Phase Wire: 6mm² Cross Section (not include insulation layer) Hall Sensor Phasing angle: 120 degree Waterproof Grade: IP54 Color: Black  N.W./G.W.: 7.8kgs/9.1kgs    Package Dimension: 34cmx34cmx33cm
E&C Findings
Based on our testing we have come up with some alternative ratings. These ratings are strictly our opinion and warranty will not be provided for any motor pushed beyond QS recommended ratings.
Details
Max Battery Current: 75 amps Max Output: 5,400w or 5.4kw
Brand:Electro & Company Inc.Category:All ProductsSKU:400-0012Tags:All Products, On Road Kart, Pit Bike Fab, QS Motors, QS Products