Shifting a John Deere 4020
When I was learning to drive tractors, I first learned on a John Deere 720, then on a John Deere 4020

The 4020’s had a synchro-shift transmission that I liked to think had 3 ‘zones’ that consisted of a high/low forward and a reverse. As you moved down the tree, those high/low/reverse combos got faster and faster.
Did you ever drive one? How did you work it out in your head?