Milling Machine Motor Upgrade

[Crusty]

Maybe the most useful thing that I learned in this project Frank is how to make my own XL timing pulleys. I've found XL timing systems to be useful in general and now I can put one together as quick as I can get a belt for it (Gates belts from Amazon get to me in less than a week).

Usually in my projects there's at least one unknown significant factor so engineering to completion is an iterative process for me and prototypes are just taking a swing hoping to hit in the ball park. My initial selection for the ratio between the drive and driven pulleys is not bad overall but I can make my mill operate at lower rpms with a ratio change and higher rpms by making the frequency doubler switch selectable, so here comes Rev. 1. My rifle brass annealer was finished in the 4th revision.

There is no substitute for horsepower.