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Encyclopedia > Brakes

This article discusses the mechanical brake.

  • For the type of ferns known as brakes, see brake (fern).
  • For the type of sheet metal benders known as brakes, see brake (box and pan)
  • For the city in Germany, see Brake, Germany

A brake is a device for slowing or stopping the motion of a machine, and to keep it from starting to move. The kinetic energy lost by the moving part is usually translated to heat by friction. Alternatively, in regenerative braking, the energy is recovered and stored in a flywheel, capacitor or other device for later use.


Brakes of some description are fitted to most wheeled vehicles, including automobiles of all kinds, trains, motorcycles, and bicycles. Baggage and shopping carts may have them for use on a moving ramp. Some aeroplanes are fitted with wheel brakes on their landing wheels. Some also feature air brakes designed to slow them down in flight (notable examples include some WWII-era fighter aircraft which used "dive brakes" to allow the planes to maintain a safe speed in a steep descent).


Deceleration of cars etc., and avoiding acceleration when going downhill, is also achieved by using a low gear.


Types of brake

See also Bicycle brake systems




  Results from FactBites:
 
Performance Brakes - Brake Pads, Brake Rotors and Brake Kits (288 words)
At Brakeworld.com quality brake parts is our first priority.
Select from the brake pads, brake rotors, calipers, brake lines and kits.
If you are looking for information on what types of Pads, Calipers or Brakes, we carry click on the choice on the left hand navigation before you select the 'Make' and the 'Model' of your vehicle.
Car Bibles : The Brake Bible (12768 words)
As the brake components cool down, their ability to absorb heat returns, the pads cool off which means they have more chance to heat up again before the resin vapourises, hence the next time you use the brakes, they seem to work just fine.
A side-effect of this design was that traditionally-mounted brake calipers could cause a lot of vibration in the steering because of flex between the wheel (with the brake disc bolted to it), and the fork leg (with the caliper).
Squealing brakes are a sign of one of two things : the friction material is all gone and you're jamming the backing plate against the brake rotor, or the fit of the brake pad against the caliper piston isn't as snug as it could be.
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