u/Scared-Winner465

Hello guys, I am building an autonomous go kart, for which I need to calculate force at the tie rod linkage of my vehicle. But I am not sure on how to calculate and get an appropriate motor for it, I need your help to know how to calculate the amount of torque the motor requires.
Photos are attached below. The motor in the picture wasn’t sufficient torque, so we were struggling to calculate it. Need inputs.
Pic1: existing setup
Pic2: How the motor will be mounted and installed