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Automotive Brake System

Automotive Brake System. The Basics. What stops it?. Friction Kinetic friction Creates heat Heat is brakes worst enemy Weight transfers to front 70% braking performed by front brakes. Applying the friction. Disc brakes will use pads to ‘squeeze’ the rotor

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Automotive Brake System

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  1. Automotive Brake System The Basics

  2. What stops it? • Friction • Kinetic friction • Creates heat • Heat is brakes worst enemy • Weight transfers to front • 70% braking performed by front brakes

  3. Applying the friction • Disc brakes will use pads to ‘squeeze’ the rotor • Drum brakes use shoes to press outwards against drum

  4. Lining material • Non-metallic • Made from synthetic fibers (used to be asbestos) • Semi-metallic • Made from iron and synthetic fibers • More fade resistant - harder pad • More prone to squealing • Full-metallic • Made from sintered metals • Very hard pad

  5. Hydraulics - it’s how the pressure is multiplied and transferred

  6. Hydraulic pressure is distributed equally in all directions

  7. Same line pressure to all wheels

  8. The pressure that is applied at piston A is the same as what is applied to piston B

  9. The hydraulic pressure is the same, but the applied force can be changed by changing the piston size.

  10. The area of the piston is determined by using the formula: 3.14 X R2

  11. The amount force is calculated by multiplying the pressure times the area P X A = Force

  12. You can’t have something for nothing

  13. The caliper piston needs more applied force for multiple reasons

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