The steering geometry simulation works with front steer or rear steer setups.
The steering rack can be dragged side to side with the mouse, or it can be moved with the scroll bar.
Numerous calculations are made instantaneously while you move the steering rack:
The static arms option displays the positions of the tie rods and steering arms with zero steer.
The Static tires option displays the position of the tires with zero steer.
The Trails option displays the paths of the tie rod / steering arm intersection point.
The Ackermann option shows imaginary lines to help you envision Ackermann steering geometry.
Zooming out makes the diagram smaller and allows you to see the Ackermann steering
imaginary line intersection points compared with the position of the rear axle.