Single-stage gear drive

Drive ratio 1:3

Gear module 2

The large gear has 39 teeth, and the small gear has 13 teeth

We need to print two cover plates!

Plus two 2mm screws with a length of 6-7mm for fixing. The transmission is smooth, suitable for stress relief, and perfect for explaining the principle of gear transmission!

No support is needed, and the printing will be completed in about 2.5 hours.

Grind the shaft Z joint properly to make it smoother to rotate!