Fresh and useful information about brake disks

An exemplary large saloon scaling 1690 kg is traveling at 134 kilometre/hour down a highway and you must brake rapidly. Let’s say the median tyres can handle a G-Force of 0.85 before tires lose traction. We'll decelerate at 0.81 to avoid slippage down the freeway. This car will come to a stop in around 87 m and generate around 1170 kW of momentum doing so. Current activity has to be bailed by the brake system in order stop the vehicle. If you waterpump current much energy into the disc-type rotors in a matter of moments it beget lots of warmth and the amount of mass or weight in the disc-type rotor is critical as to cope with current burden.

A typical front disc rotor on a heavy saloon is around 300 mm in diameter and scales approximately 9.5 kg. We will focus on the front disc as it usually get 70% of the brake load. A disc-type rotor composed of to key components, the installation toller which attaches to the axis and the braking band to which the brake torque is emploied through the caliper. The friction strip or ring in this disc-type rotor scales around 6 kg. In the abovementioned braking application this 9.5 kilograms disc will increase in temperature by around 125 deg C in only less than 5 s. When the same 300 millimetres disc weighed 8.5 kg with a brake lining of 5.5 kilograms then the temperature increase pretending along 137 deg C. 10% increase in temperature doesn’t sound all this much but by mischance heat waftage is not all that easy. In a 1 off braking application an extra 10% probably would not make a perceptible difference. But what happens in performance driving on or off the road is a series of brake applications at regular intervals. The time between brake applications is unoften sufficient to permit the disc to recover to the optimal special Tc so you end up with an concentration of Tc increase over an interval of time. More info read at http://fuutamedia.com.