4mm Coreless Motor Gearbox Parts, Module 0.2 Gears, Reduction Ratio 8:42, or Module 0.3 Gears, Reduction Ratio 7:25, Use two ball bearings with cage!！Output shaft 1mm

Note: needs to be assembled gearbox by yourself。

This is assembled brass 8T pinion M0.2 version gearbox 

With 75mm white propeller

Gearbox parts, need to be assembled by yourself, this is 412 corelss motor with plastic 8T pinion

This is 412 corelss motor with brass 8T pinion

This is 408 corelss motor with plastic 8T pinion

This is 408 corelss motor with Brass 8T pinion

This is 412 corelss motor with plastic M0.3 7:25 gears

This is 408 corelss motor with plastic M0.3 7:25 gears

Newly designed mounting, using our cage ball bearings, note that the ball bearings also have front and back, with the ball side facing inward

The bulge is added inside the motor base so that the motor does not fit snugly against the plastic base and is convenient for heat dissipation

This is the 408 motor usage

The weight of 412 coreless motor and brass pinion gearbox is1.23g

The weight of 412 coreless motor and brass pinion gearbox with 75mm propeller is 1.49g

The weight of 408 coreless motor and brass pinion gearbox with 75mm propeller is 1.38g

Test data，408 coreless motor and brass pinion gearbox with 75mm propeller

350mAh battery is charged, normal 4.35V

The thrust is about 3.34g when capturing, votage: 3.6V, Current: 180mA。

412 coreless motor and brass pinion gearbox with 75mm propeller，the thrust is gradually increased, from 5.29g to 5.56g, the voltage is about 3.5V, 230mA, and the voltage drop of 4.35V 350mAH battery when using a 4mm coreless motor is also quite large. It should be known that the test data with 3.7V or even 4V or more are all adjustable regulated power supply or large-capacity batteries, which can not simulate the actual use at all, and the actual use can only use the Lipo battery up to 4.2V within 100mAH.