A thread about #F1 trick rear suspension.
Teams have been using a trick set up called "collapsible rear heave springs". This boosts top speed and has been a trick used knowingly by all teams for years.
Teams have been using a trick set up called "collapsible rear heave springs". This boosts top speed and has been a trick used knowingly by all teams for years.
At speed increases, downforce increases the load on the suspension, thereby compressing it. Compress too much and the airflow under the car stalls losing drag/downforce. There comes a point that the car has enough downforce even with a stalled underfloor, so teams exploit this. 
As the rear compresses, the rear heave gas spring resists the force to keep the rear end propped up. At a predetermined speed, the load on the gas spring opens a valve, collapsing the rear to lower it and stall it.
Hysteresis in the valve keeps it collapsed despite the reduction in downforce. Only at much lower speeds (braking) does the gas spring reset to normal ride height.
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This tech has be talked about in the teams/FIA Tech Working Group, but always was agreed to be retained
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This tech has be talked about in the teams/FIA Tech Working Group, but always was agreed to be retained
Altho this is now old tech, as I pointed out Merc did exhibit more extreme collapsing in Turkey. Running nearly flat in fast sections, while riding back up to their higher rake settings in the slow/mid speed sections
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