Planetary gear design

Aim: Computer aided planetary gear design.

Mid-drive gear project is perfect example for costruction, that needs planetary gear. It is important to know how do this type of gear operate and how tricky ratio can be changed. There are many toolboxes, I prefer to use MIT calc. below I have attached 3 PDF’s for gear calculations in mid-drive gear project presented here.

First stage planetary gear: #1 Calculation

Second stage planetary gear: #2 Calculation

Bevel gear  (input): #3 Calculation