Глянь здесь: http://www.circletrack.com/techarticles/4637/. И здесь http://www.performancetrends.com/rc.htm
И немгого теории:
Q: What are acceptable figures for roll center location in roll?
A: First, please understand that the roll center is a result of the motion (body roll) not the cause nor control of the motion. Very often people think it is the other way around.
How hard you brake, how fast you turn the steering wheel, etc will cause your race car's body to pitch and roll. This being the case the roll centers will be moving all over the place, all of the time, due to the driver's controls.
Spring, sway bars and shocks also control how much the body moves. From an engineering stand point these are the items that we can easily "tune" and affect how the body rolls. But, the driver still has the largest control and can over power the other controls.
If I could control the roll center location (as with an active suspension) I would want the roll center to stay in the center of the car. That way I could design the suspension to have a camber curve for both sides that would perfectly match the body's roll angle and the tire's contact patch would remain uniform no matter how many degrees the body rolled in either direction! Keeping in mind that the driver has such a large input, I prefer to not worry about the roll center location and focus on my camber curves. So, think about using one of the suspension geometry programs and try to find a set-up that will give you the camber gain you desire.