[MattC9]

As a part of this years off season I was looking into making custom gearboxes in the off season. But I have small problem, I don't know much about gear boxes, I know the basics from putting AM gear boxes together and making custom vex ones.

But how do I plan one out?(other than copying a hole pattern from an AM one) Lets start simple, I want a single speed gear reduction lets say 8.5:1. Now where should i go to look at custom gears? How do I cad the gears and there "meshing" with out a gear generator?

All your knowledge you could share would be very appreciated.