No CAD Required

From a recent post to this forum https://grabcad.com/questions/can-anyone-design-this-system-in-catia

CAD is just a tool used in engineering, same as a spanner, pencil, vernier calipers, micrometer or any other tool we may use in our work.

This seems to be a " homework assignment " question taken from a text book. Cad modeling is not required to work this out. It is a basic mechanics problem applied to sizing and specifying mechanical components in a simple spur gear reducer, the sort of problem I would have been presented with probably in my first year of engineering training. When I started my engineering career CAD had not been invented and computers were extremely expensive and needed their own room.

This problem requires the application of simple mechanical theory, a bit of thinking, a pocket calculator, this would have been a slide rule when I started out. Once you have done the basic calculations and worked out the required sized components, gone through a few catalogs worked out exactly what these components will be, you then you may open up your CAD software and produce the models and drawings needed to get this machine made.

I have attached to this post a pdf document Problem-2 Solutions.pdf which outlines some of the basic mechanical theory that you would use to calculate an answer to this problem. My challenge to anyone out there is to calculate the answer to this simple problem and post this answer and calculation to this forum. I have worked out an answer to this myself, this is a simple calculation only requires calculator, or slide rule, a piece of paper and little time.