Discs with holes help heat dispertion in the best possible way

“Aerodynamic effects are strongly influenced by the shape of the object invested by airflow. Over the years, simulations have also been made to understand the effects of the driver's position on a kart. Comparing a kart simulation with a driver who is standing erect, one with a driver hunched behind the steering wheel, and one without a driver on the kart, it was noticed that the effect of the driver's lowering was significant in terms of resistance, while the unreal hypothesis of an unmanned kart was the worst situation, even compared to a driver standing erect. Analyzing the flow lines it has been noticed that when the driver is crouched, less vein fluid detachment is generated (i.e. airflows are glued to a body – editor’s note), while the situation is the opposite without the driver. It should also be noted that the configuration with the driver has two distinct beneficial effects: the first is a Cx reduction, the second is a frontal area reduction. This means that the benefit in resistance terms is twofold: the resistive force is linearly proportional to both the Cx and the frontal area. In fact, in the absence of a driver, the frontal reduction is compensated by a worse Cx, which therefore gives the lowest resistance overall”.

“In my opinion, holes do not help ventilation inside discs, but actually make it worse, because they change the airflows created by the fan inside the disc. Holes give an advantage in terms of weight and help keep the brake pads revitalized by eliminating the coating that often forms on them; this the real reason they are useful. They basically improve the effectiveness of the braking system”.