Chaoli CL 820 8.5x 20mm Coreless Motor for 90mm-150mm DIY Micro FPV RC Quadcopter Frame Description: Motor Diameter: 8.5mm Motor Length: 20mm Shaft Diameter: 1.0mm Cable Length: 60mm Weight: about 5g Option: Clockwise Motor (With Red Blue), Anti-clockwise Motor (With Black White) Option: With 1.25mm JST Plug, Without plug Quantity: 1 pcs 1. Operating condition Rated voltage 3.2V DCDirection of rotation CW & CCWOperating voltage range DC3.0-3.7V DCperating temperature range-10-50 C Motor positionall position 2. Mearsuring condition Motor positionhorizontal or vertical Power supplyregulated DC power supply assuring unquestionable measuringregulated 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 rotationviewed from output shaft side 3. Electrical characteristics Items Specification Standard value Rated speed 39000rpm 12%39000 rpm Rated current 200m A max 150m A Rated Load 30500rpm 10%30500 rpm Rated load current 1750m A max 1620m A Starting voltage 1.0V max 0.8V DCInsulation resistance 10M? min AT 250V DC betweenmotor terminal & case Mechanical noise Under rated voltage 60 DB (A) max 53d B (A) 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, & not allowed to contact with corrosive liquid & corrosive gas, should not to be s