Nice work - where's the video? I hope it's on your youtube channel. I haven't check into your channel lately, so I might have missed it if you made one.
I didn’t do a video on this. Actually, I’m restoring a late 1930’s/early 1940’s Surge vacuum pump. (Which I will do a video on) That’s why I made up the stallcock/vacuum guage/regulator rig. Putting that on the tractor was an afterthought!