QS138 70H type-B middrive e-motorcycle e-motorbike e-bike
e-boat mini EV
QS3000W BLDC Mid-drive motor can be applied to Electric scooter and electric motorcycle
It could be 72V 90KPH, only avaiable for 12inch wheel kits
QS Motor 3000W 138 70H Mid Drive Motor
Drive type: By pulley or By Chain
Motor type:BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor
Magnets:Height 70mm, 40pcs, 5 pole pairs ;Diameter of stator: 138mm
Rated Power: 3000W ;Rated Voltage: 72V as default
Max. Speed: 90KPH (With 12inch wheel after 1:4.7 ratio)
No-load rpm: 4400rpm without flux weakening, 6500RPM with flux weakening.
Max Torque: approx 56N.m (without Reduction ratio)
Max Efficiency: 90% ;Peak Battery Current: 120A (72V)
Max.Peak Phase Current: 450A;Single Hall Plate with waterproof connectors
Cross Section of Phase Wire: 16mm2 ;Hall Sensor Phasing angle: 120 degree
QS138 70H type-B motor design for 2 pivot mounting for easy of installation and belt or chain tension adjustment see photo drawing rated or continueour power 3kw to 8kw at wide range voltage of battery 30V -86Vdc
Transmission have types to choose for Sprocket or pulley ;Pulley will provide a highest efficiency ,hereby using a Gate brand type รุ่น polychain carbon belt
=https://www.gates.com/us/en/power-transmission/synchronous-belts/poly-chain-synchronous-belts.p.9268-000000-000045.html
That deliver high torque with very low loss means highest efficiency reach up to around 95% or in the other word loss around 5% in transmission unit comparing to other type of gear or Sprocket that will obtains high loss and lower efficiency at below 85%
We supply a various kind of gear ratio width of pulley&belt according to application and design for mini electric vehicle electric Motocycle agriculture EV electric boat
The kit supply for easy of use all connector with LABEL&sticker plug and play ready to go for EV green energy
Controller ruggedize heavy use can run in wider range of voltage 30V-88Vdc come with blue tooth for monitor&setting in iOS or Andriod device
Throttle can be select for 4 type of hand throttle foo throttle remote throttle joystick throttle We provide a factory price full techincal support pls contact www.servovision.com
email: servo.vision@yahoo.com servovision1@hotmail.com