Green gear has 12 teeth and brown gear has 8. The ratio is 3/2. So the green one turns 2 times the brown one turns 3 times. You can manually rotate the gears while they are at speed 0.
Made by echo. Background image is from https://www.deviantart.com/mina-l/art/Gears-and-Cogs-242871416 Gear drawings are from Microsoft Office ClipArt
