A thought I had the other day..
Assume you have a car with a 'conventional' double a-arm suspension.. ie single spring and damper at each corner of the car, plus ARBs front and rear.
Your dampers are active in bump, roll, and pitch. Its all coupled. Traditional thinking is to select your damper curves for slight underdamping (at least as a baseline setup) for the sprung mass in bump. Afterwards, you can worry about roll dampers if theyre allowed in your racing series.
Take the typical coned autocross course though, instead of a more open circuit. Very short straights, lots of corners, slaloms, chicanes. High emphasis on response rather than flat out peak grip. Suppose the track surface is very smooth. If your car is well-damped in bump but heavily (damping ratio of 3-4) damped in roll, it would make sense to me to select and tune your dampers for roll rather than bump, relying mosty on the tires to damp out most high speed road undulations. Much quicker, snappier transient response.
One might think you could almost 'decouple' bump and roll damping in this scenario by having extremely progressive or digressive damping curves.. for low speed (roll) and high speed (small bumps).
Thoughts?