Good point. In my broad brush estimation the cars will have about 3G downforce as they approach Eau Rouge, 1 from the car mass and 2 from aero. On the exit of Eau Rouge where they hit the upslope they will gain 1G from the road shape. If this additional downforce triggers a loss of downforce from the floor it will depend how the combined downforce decay from this loss and the vertical road shape play out.basti313 wrote: ↑Mon Mar 07, 2022 8:43 amBut at Spa you still have the compression pushing the car down, later it lifts a bit. So you have forces on the car. To my understanding purposing is the lack of force at some point, which can be seen as floor downforce oscillating: The car goes down and looses mayor part of the floor downforce, so it goes up. If you have additional compression or lift by the track, this will act like the DRS activation and damp the oscillating floor downforce.henry wrote: ↑Mon Mar 07, 2022 12:59 am
Eau Rouge is a special case. The compression makes for a very significant increase in downforce which will inevitably reduce ride height, probably by more than anywhere else on the calendar. If the porpoising is being triggered by low ride heights then it will be most likely to be triggered there. And since it’s in the middle of a high G corner complex it might cause some problems.
I would also see the issue rather in situations where the wing is a bit bigger, not necessarily Spa or Monza. Might be an issue in Azer?
By the way: There is no more Eau Rouge. This issue will not happen there.
If they cancel out then the cars will progress to Radillon with no problems. If they don’t cancel and the car starts to porpoise then Radillon will be tricky, particularly since there is some loss of downforce over the crest.
Of course there may be no problem at all, in which case they’ll treat Eau Rouge/Radillon as a minor inconvenience in the straight. As they will many other corners on this wonderful circuit.
My understanding is that they have opened up the run off at Eau Rouge but not changed the track, am I wrong?