Blackburn's formula does this by sketching the arc of your car's turning capability into a full circle, then using the center of the circle to create the right-angle triangles Pythagoras loved.

Based on both the area formula of gear tooth and groove and their respective center multiplying formula, the force and moment expressions of both sides of side-panels could be brought out at first.

Based on the synthesis theory concerning the mixed point straight-line four-bar linkage in the special condition, a research method with the circle center and circle point as parameters is proposed.