Rear roll center question

[Peter Mc Mahon]

Donny. Thanks for the reply and yes I am having issues wrapping my head around a difference between physical and geometric. In the illustration that you gave, where would the roll center be if the Panhard Bar was only 1/2 it’s length? Same mount on passenger side but mounted on the center of the differential? And, I have looked but can’t find a picture that demonstrates reference lines drawn to show why it is the roll center, any chance you can point me in the right direction? Thanks