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This is E&C's Favorite Motor! It can be found in both the EMX14 and EMX17 Kits. This motor is perfect for medium size electric motorcycles. The QS138 70H is well known around the world for its ability to produce power in a small form factor. A tried and true motor that packs a hefty punch for its size and weight. We like this model because of its sleek look and convenient mounting points. This model is capable of over 30kW Bursts!
Includes
1- QS 138 3kW Mid drive motor with 10t 428 sprocket for spline drive
Key Features
Light weight and small dimension compared to other motors of similar power outputs
V configured rotor design allows for higher RPM with flux weakening
High Torque suitable for high performance high load situations such as climbing and racing.
Supports regenerative braking
Proven reliability
Compatibility
EM-150 Controller
Specification (via QS)
Motor Type: BLDC Inner Rotor Motor Brand: QS Motor, QSMOTOR Motor Design: Single Axle Matched Tire: 12 inch Wheel (as default) Magnet Height: 70mm, 5 pole pairs Dimension: 162x210mm Rated Power: 6000W Peak Power: 10000W Rated Voltage: 72V Speed: 3800RPM (basic RPM) With Flux Weakening(RPM): 6000RPM Max Torque: 45-55N.m Cooling Method: Air Cooling Max Efficiency: 94% Continuous Battery Current: 67A (72V) Peak Battery Current: 140A (72V) Thermic Probe: KTY83/122 (as default) Working Temperature: 70-120C, peak 150C Hall Sensor: Single Hall Set with Waterproof Connectors Phase Wire: 16mm2 Cross Section (not include insulation layer) Waterproof Grade: IP67 Color: Black N.W./G.W.: approx. 11kgs/12.79kgs Package Dimensions: 34cmx34cmx33cm/piece
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: 200 amps Max Output: 14,500w or 14.5kw
We recommend buying our E&C sprocket to ensure proper fitment and to reduce the chance of damage to the spline drive
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