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!