Quote:
Originally Posted by alexk
My point has to do with the use of cardboard.
When I see/hear a downfore of 80, 100, 120 kg, I expect that if you put 80kg of weight on this cardboard flap it's going to hold it.
Because if it cannot hold this weight when it's static, it will not have 80kg of downforce.
I don't underestimate what a flap, extension etc can do, but it's critical for it to be properly attached to the car and do not flex whatsoever.
Try out the front flaps of a CSL to see how much weight they can hold.
They are strong and properly attached.
I am sure if you make carbon or polyester spoilers, the result will be realistic.
With cardboard, I seriously doubt it.
PS : the CSL has the same tank with the M3 E46.
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Alex, the cardboard does not have 80kg of downforce on it, that's measured at the wheels. What is does is modify the airflow resulting in greater pressure differential above and below the car, that's where the force comes from.
Plus when manufactures quote downforce in kg then this can only be at a specific speed, and it's normally 280kph or so on!
Anyway this is a tried and tested technique, it's how we modify shapes in the wind tunnel and then try early testing on track. The rear spoiler is not elegant but I was simply proving to Al how effective aero could be. The standard CSL still generates lift so there are large gains to be found with the right aero.