I got this running today. Picture attached. I had to extend the caster arms 6 inches to fit my 22 inch mower in the frame. I added a digital volt meter primary to indicate when the motors are twitched on.
This lawnbot is very fast and would like to slow it down about half speed. It is very twitchy. Would just using 12 volts in parallel rather then 24 volts work? The amps would increase not sure how much. Anyway, I have a race horse and need a plow horse.
The next modification is incorporating a remote control emergency kill switch for the motors.This is a powerful machine.