Created by Simourv on 9 March, 2018

Hi everyone,


I have been reading a book on transmission gearing and I have successfully made a calculator to calculate the relevant ratios based of input data. However, as I move on further in the book it demonstrates how to calculate the number of teeth of gears for a given ratio, but I have spent the last couple of days trying to understand what they have done but I cannot understand how they have obtained these numbers and where do they come from.

Here is the relevent information: