How free does the suspension move (without dampers)? If the suspension has friction, this will affect the handling a lot and make the roll-bars feel less efficient too - if you remove the dampers and one side of the suspension doesn't move up and down with the arm you lower/raise, there's clearly something wrong. Also, with the dampers and wheels removed, the suspension should fall on it's own weight when you raise it up then let it go.
It's quite obvious, but a good way to test the anti-roll bars workings is to just try them out on the track
- If you ask me, on a table it's hard to notice a difference of roll bars on the table just by adding /switching anti-roll bars. If you want to compare them on the table, remove the dampers and hold one suspsesnion arm down with one hand. Push the other side up with your other hand, and you'll immediately feel how much resistance there is. It should feel very much like compressing a spring - logically really, the anti-roll bar is a spring between the two suspension arms
