Originally Posted by
OptimumRC
Raising the inner ball stud lower the roll center and as you said raising the outside raises the ball stud does raise the roll center. However, lowering the whole link equally does RAISE the roll center.
I cannot stress how just drawing something up on a piece of paper will help make this easier to visualize and understand. Regardless if you draw it perfectly to scale, just approximating the lengths and angles is enough to see the relative comparisons.
Ok well the illustration that you posted is for a SLA type suspension aka short long arm and our cars dont have that type of suspension.
I drew it out in my head, the very bottom picture, if you lower that whole upper arm it will lower the roll center by having the line intersect sooner from the lower arm center line thus lowering the roll center.