New Upper Rear Model S Suspension Arms

I made an adjustable eccentric for the stock upper suspension arm to verify my calculations. The goal was to remove one degree of negative camber (go from -1.9 to something more like -0.9). I determined the upper suspension link needed to be 0.210 longer to achieve this goal and that was indeed the right amount. I was also able to verify there was enough toe adjustment such that the stock toe configuration would work and I did not need to make toe links as well.

The following are pictures of my first pass suspension arms. These were water jet cut from 1" 6061-T6 aluminum. I oversized the dimensions of the original Tesla extrusion for added safety margin at the expense of a few ounces of added weight. They were dropped off for anodizing today and I should have them back tomorrow (4/5).

The last three pictures of the group are of a set of test links made to accept aircraft style misalignment ball bearings. These are typically used on control surfaces where you have hinge points across a large expanse and all the bolts have to align perfectly.

The following items are provided without warranty of any kind including fitness for any particular purpose. They are provided for enjoyment only.

Dimensioned Drawing for original non-P+ bushings and a DFX output of the part