Apologies if the answer to this is obvious, but I am trying to get a sense of whether weight transfer under braking is affected by how much downforce a car has.
For context, we are experimenting with carbon-carbon brake discs on a non-downforce car. Under heavy or sustained braking, the fronts are overheating, the rears doing almost nothing. Putting to one side the question of cooling, I am wondering whether part of the reason is that the weight transfer under braking is causing the front contact patches to expand, which enables the front brakes to do more more, which causes the front contact patches to expand further, which puts more demand on the front brakes, etc.
In general, carbon-carbon discs are used only on cars with very low centres of gravity, high downforce and stiff suspensions. I gather that the stiffness of the suspension does not affect weight transfer; CoG obviously does affect it. As the car decelerates, I would guess that the downforce generated would diminish at approximately the same rate front and rear, and therefore a car with balanced downforce will not experience weight transfer under braking at a substantially different rate from what would happen with the same car but without downforce. Is that correct?
Also, does anyone here have a general idea of how much weight transfer there is in a Formula One car under heavy braking?
Thank you for reading this. Any thoughts would be appreciated.