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As I (very little) understand it the diffuser is there to pull a bit of a disruption vacuum on the backside to help with the low pressure underneath the car helping the aero aids on the top of the car , and once you’re totally flat bottomed and have front and side skirt sending the flow to where it can be used on radiators etc and creating other low pressure points , the diffuser really helps with that low pressure underneath and is a must for the stuff on top to work at its best compromise ...
As with most aero , the car can be a pig if you’re not going fast enough .
It’s all down to air-flow , and to get more airflow you need more speed .
Unfortunately , downforce creates drag so MO POWAH BABY is needed to overcome the drag to get the aero working right .
I was entertained by an f1 transmission guys rant this last week , as he’s complaining true mechanical technology is playing second fiddle to aero and energy-regen etc.
he made a few very valid points .
They’re at the stage now , with full downforce aero if you where to turn off an f1 car on a straight and not touch the brakes it would slow quicker than the average streetcar on its brakes !!
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