zac510 wrote:So in a sense it could just be interpreted as extremely slow rebound damping and people probably wouldn't consider adjusting the rebound damping to be illegal.
Definitely goes to show how integrate vehicle dynamics are. There's not just simply one thing that does one job. They are all influencing another, all the time.
The system must be more dynamic than that. If it was just an extremely slow rebound then it would hurt them through a series of bends. If it is as simple as you're saying then, yes, I'm sure there's nothing illegal about it so there will be no problems come the season start.
For reference, this is what is described in the Ferrari letter:
'In all cases they would be installed between some combination of the sprung part of the car and the two suspension rockers on a single axle, and achieve an effect similar to that of a FRIC system without requiring any connection between the front and rear of the car. All suspension devices in question feature a moveable spring seat and they use energy recovered from wheel loads and displacements to alter the position of the heave spring.
“Their contribution to the primary purpose of the sprung suspension – the attachment of the wheels to the car in a manner which isolates the sprung part from road disturbances – is small, while their effect on ride height and hence aerodynamic performance is much larger, to the extent that we believe it could justify the additional weight and design complexity.
“We would therefore question the legality of these systems under Art. 3.15 and its interpretation in TD/002-11, discriminating between whether certain details are ‘wholly incidental to the main purpose of the suspension system’ or ‘have been contrived to directly affect the aerodynamic performance of the car’.
The two areas that Resta requested be clarified in detail were: “1) displacement in a direction opposed to the applied load over some or all of its travel, regardless of the source of the stored energy used to achieve this.
“2) a means by which some of the energy recovered from the forces and displacements at the wheel can be stored for release at a later time to extend a spring seat or other parts of the suspension assembly whose movement is not defined by the principally vertical suspension travel of the two wheels.”
This doesn't sound to me simply like a slow rebound damping system and is what Charlie has said is probably illegal. The words 'wholly incidental to the main purpose of the suspension system' are important to note. What you describe is not 'wholly incidental' it's fundamental to the suspension system. So if Red Bull's system is as you describe, then I'm sure there won't be any problem whatsoever and everyone's happy.