4X Racerstar 8520 8.5x20mm 53500RPM Coreless Motor Upgrade for Eachine QX80 DIY Micro FPV Quadcopter

4X Racerstar 8520 8.5x20mm 53500RPM Coreless Motor Upgrade for Eachine QX80 DIY Micro FPV Quadcopter Description: Motor Diameter: 8.5mm Motor Length: 20mm Shaft Diameter: 1mm Cable Length: 80mm Weight: 5.1g Option: Clockwise Motor(With Red Blue Wire) Anti-clockwise Motor(With Black White Wire) Option: With 1.25mm JST Plug Quantity: 4pcs 1.Operating condition Rated voltage 3.7V DC Direction of rotation CW and CCW Operating voltage range DC2.0--4.5V DC perating temperature range -10-50C Motor position all position 2.Mearsuring condition Motor position horizontal or vertical Power supply regulated DC power supply assuring unquestionable measuring regulated DC power supply assuring unquestionable measuring 10-30C 30-95% If the judgment is questionable,Measurent is to be made based on JIS Standard Testing Condition(20+2C,65+5% ) Direction of rotation viewed from output shaft side 3.Electrical characteristics Items Specification Standard value No Load speed 53500rpm12% 53500 rpm No Load current 280mA max 200mA Starting voltage 0.8V max 0.5V DC Stall current 10570mA5% mA 10570mA Terminal resistance 0.4ohm 5% 0.4ohm Insulation resistance 10M ohm min AT 250V DC between motor terminal and case Stall torque 64.03g.cm 64g.cm Cautions: 1) Please use the motor in this technology index range for the performance of the motor is affected by environmental temperature seriously. 2) It is not allowed to operate in the high temperature with high humidity, and not allowed to contact with corrosive liquid and corrosive gas,should not to be stored and without running Continuously for more than six months. 3) Do not lock the motor shaft while the electric is on. The motor will be burnt out after the motor shaft was locked for more then 1 second. 4) Do not hit the motor directly. Package included: 2 x CW motor 2 x CCW motor