If there were no other springs, then wouldn't it be like a solid axle (non-independent suspension)? It would only compress and rebound equally on both sides. If there was a deflection up on one side, there would be a corresponding force down on the other side. I think the pivot points where the rods attach to the frame might have some spring or tortion bar attached to them that we can't see. It is just a total guess on my part though. The main spring in the middle would work for both equal deflections and to compensate for downforce (guessing again).
 expect the very impressive cockpit which is as nice as
 expect the very impressive cockpit which is as nice as 

 ).
).



 well for the game i have in my pc...
 well for the game i have in my pc...