Drilled, Slotted & Vented Brake Rotors - What's Best?
This article was originally posted by Modified Magazine.
As most of you already know, the basic function of a brake disc is to provide a mating surface for the brake pads so that when you stomp benefits of cross drilled and slotted rotors the brake pedal the friction material that makes up the pad is squeezed against the rotors by the calipersconverting forward motion into heat as the car slows.
That heat is then radiated to the atmosphere as air flows over and through the rotors and the rest of the braking systemcompleting the conversion of kinetic energy into thermal energy.
According to Mark at Brembo, cross-drilled rotors came into being because of the need to evacuate gases or water from the interface between the disc face and the brake pad surface.
Additionally, cross-drilling increases the surface area of the disc, and this aids in disc cooling one factor in brake disc cooling is the ratio of surface area to disc mass.
The partypoker no deposit bonus code significant feature of the holes when done correctly is that they continually refresh the brake pad surface, providing improved performance and greater disc life.
As the holes pass the brake pad they essentially clean the surface, helping to prevent pad glazing or hardening.
This effect can be easily observed on a drilled disc near the outer edge where there are no holes.
In this area, the pad surface is not refreshed and you will typically see greater disc wear in this unswept area.
First, the holes are not just simple cylindrical holes.
They have a more complicated shape that requires special tools to create.
We also have strict requirements on hole density or the number of holes per given surface area of the disc.
Additionally, there are requirements for the hole size and placement of the holes, including distance between holes, distance from braking surface edges, distance to disc vanes, angular offset of holes and more.
With top-level racing materials, the heat input is very rapid and the increase in localized cooling around the holes can cause issues.
Due to the fact that track testing is required, and thanks to strong collaboration with many top-level racing teams, Brembo has developed a very broad knowledge of the many different types of slot shapes possible when machining discs.
Ultimately, the slots are all designed to do the same thing refresh the brake padsbut different shapes no doubt impact the aggressiveness with which the pads are refreshed and also likely affect localized cooling of the disc.
And speaking of cooling, the internal structure of ventilated rotors plays a very important role here.
Heat transfer to the air occurs only on the surfaces of the disc that are directly exposed opinion slot and go down! air; so the more surface area, the better benefits of cross drilled and slotted rotors disc can shed the heat.
Design of the vane structure has a dramatic effect on the performance of the brake disc.
Some designs, such as directional curved-vane discs actually improve the airflow through the disc by turning the disc into a centrifugal pump.
However, the cost of implementing this is increased due to the need for unique left- and right-hand discs.
Rotor Education Tech Talk David Send your feedback to dpratte modified.
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Drilled And Slotted Rotors! Are They Worth It?
Cross-drilled rotors are often used from the factory on high-end sports cars, which is why they look fast to many of us, even when installed on a parked car. Like slotted brake discs, cross-drilled brake rotors provide an escape for the gas and dust that build up between the brake pad and disc.
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