That is really cool. I like the concept a lot. I run my car very low and live with the bump steer by using excessively stiff springs (gives your forearms a work out) to limit travel. Very nice. Hmmmm..... Out to the shop.

Eric

Two bearings on the center pivot gives in excess of 66000 psi strength. Even at a 20% service factor, you are way above any forces generated without impact. The reason I like these over needle bearings is the actual impact resistance (curbs, etc.). They should last a long time.

BTW, I went with a 9/16" bearing and enlarged the hole in the mounting ears. You could go even larger.

Since I went to engineering school before the advent of AutoCad, I laid out the lower control arm half scale. Assuming 5 degree upward slope with the ball joint on bottom, the ball joint moves toward the center of the car approximately 1/8" during full bump. Moving the ball joint to the top has the opposite effect, moving the ball joint away from the center of the car 1/8". Certainly not enough to impact camber significantly, but it does improve the camber curve. If you really want to improve the camber curve, mount the LCA at a 20 degree angle...then with a 4" bump, you move the ball joint around 5/8" from the center of the car. (And really screws with your mind about virtual roll centers:)

Note...if someone wants to do it in CAD, the length of the LCA is 12".

Subscribed on this one. Nice work Chuck and GrossPolluter!