Brake discs cut for the Big Brake 286mm 2009+ set D2-DS03

Slotted brake discs for D2 Big Brake Kits from 2009 + The differences between a slotted and drilled brake disc: Slotted: Slotted brake discs typically feature small depressions (four to eight evenly spaced), milled on the surface of the brake disc. The grooves provide the same cooling benefits as the holes, but with a lower risk of separation and formation of gaps because the grooves do not usually extend over the entire surface of the rotor (although such models are available on the market today). The grooves are usually oriented and bent in this way. that they can cover the entire surface of the brake pads, providing much better ventilation than a series of holes. Some types of cuts can be used to judge the condition of the brake disc. The grooves also have a 'shave' effect that keeps the brake pad surface cleaner for better vapor contact. In addition, the presence of notches works like a grater, increasing the car's braking efficiency, while being aware that pad wear increases. In order to avoid quick wear, it is recommended to choose quality pads for such discs. Drilled: Drilling 30 to 40 evenly spaced holes in the brake discs improves air ventilation and cooling effect. The holes have indeed brought an unexpected benefit. They created channels for the extraction of hot gases emitted by the brake pads. Phenolic resins, which are used as a binder to bond the brake pads, emit steam when overheated. The gas can form a boundary layer between the pads and the brake disc, which reduces friction. In our case, the boundary layer of gas between the surface of the pads and the brake disc prevents the pads from contacting the brake disc, reducing friction and braking force, just at this point. when the driver needs it most. If the brake disc is perforated or has cuts, holes or grooves separating the boundary layer and allowing gas to escape, then the pads can make full contact with the brake discs. In addition, the holes and grooves help remove dust and dirt that enters the space between the brake disc and the brake pads. At a microscopic level, the dirt between the brake pads and the brake disc can reduce the contact area of ​​the steam. Naturally, this also lowers the friction and efficiency of the equipment. Therefore, the holes help to remove dust and dirt, and ensure the brake pads the ability to maintain maximum surface contact. D2 brake discs have TUV and ISO9001 Brake discs slotted for Big Brake Kit D2 from years 2011 + & nbsp