Vs: Lancer Evo jarrut? IX ja myös muut...
Jos jarruja haluaa parantaa lienee tarkoituksena ajaa kovaa esimerkiksi radalla? Tähän yhtälöön showkäyttöön tehdyt poratut reikälevyt sopivat aika huonosti. Täysin esteettisistä syistä tehtyä kamaa joka heikentää jarrutustehoa ja pahimmassa tapauksessa levy saattaa murtua kovassa käytössä.
Jos taas kyse on puhtaasti esteettisistä syistä niin siitä vaan mutta parantamisesta ei kannata paljon puhua vaan tuunauksesta...
Stoptech:
Which is better, slotted or drilled rotors?
StopTech provides rotors slotted, drilled or plain. For most performance applications slotted is the preferred choice. Slotting helps wipe away debris from between the pad and rotor as well as increasing the "bite" characteristics of the pad. A drilled rotor provides the same type of benefit, but is more susceptible to cracking under severe usage. Many customers prefer the look of a drilled rotor and for street and occasional light duty track use they will work fine. For more severe applications, we recommend slotted rotors.
Wilwood:
Why are some rotors drilled or slotted?
Rotors are drilled to reduce rotating weight, an issue near and dear to racers searching for ways to minimize unsprung weight. Drilling diminishes a rotor's durability and cooling capacity.
Slots or grooves in rotor faces are partly a carryover from the days of asbestos pads. Asbestos and other organic pads were prone to "glazing" and the slots tended to help "scrape or de-glaze" them. Drilling and slotting rotors has become popular in street applications for their pure aesthetic value. Wilwood has a large selection of drilled and slotted rotors for a wide range of applications.
Carbotech:
Cracking is limited mostly to drilled discs, which get small cracks around outside edges of the drilled holes near the edge of the disc due to the rotor's uneven rate of expansion in severe duty environments. Manufacturers that use drilled rotors as OEM are doing so for two reasons: looks, if they determine that the average owner of the vehicle model will not overly stress them; or as a function of reducing the unsprung weight of the brake assembly, with the engineering assumed that enough brake rotor mass remains to absorb racing temperatures and stresses. A brake disc is a heat sink, so removing mass increases the heat stress it will have to contend with. Generally an OEM application that is not drilled will crack and could fail catastrophically if used over and above the original equipment design. Once cracked, these discs cannot be repaired. Carbotech does not recommend cross drilled rotors for any kind of track use.