Since the last two gears are blocked with a screw to a metallic rod I don't have the need to find the compatibility between the plastic gears and the metallic that I will buy. I need to find: a 1:3 ratio, and the 8th gear must have at least 50mm diameter (if not it will collide with the 7th...
I have made a gearbox to reduce rpm and increase the torque. The gearbox is made of 8 gears: each one has 12 teeth(small side) and 36 teeth(big side), so that has a 1:3 ratio. The first one has just 12 teeth (transfers the motion from the dc motor) the last one has 36 teeth and it receives...
