We have been testing our car and determined that the under steer problem that we have is because we have parallel steering arms. Drag! On the positive side our steering arm is an aluminum bracket that is bolted to the upright so it is not a really big chore to replace it. We are going to manufacture a new steering arm with geometry (2 mounting holes for the rod ends) for both full Ackerman and positive Ackerman. We know that drawing a line through the king pin to a point at the center of the rear axle will give the plane for the location of the steering arm hole for a car with a rear mounted steering arm. Our steering arm is located in front of the kingpin.
Question: Can we simply mirror the geometry for the rear steering arm to achieve the proper hole location for our steering arm? If not what do we do?
Thanks
Bryan