How do bike rear brakes work?

Answer 1

bmx brakes are usually standard caliper brakes..

they can also be found on 26" bikes and other bikes, they are less powerful than v brakes and disc brakes.

there are 4 parts to the brake, the brake lever (handlebars) the brake cable, the brake calipers and the brake pads.

the pads are on either side of the rim of the wheel, attached to the callipers which sit on brake mounts and are bolted in on springs, they cross over just after the rib of the tyre. the cable attatches to both calipers and pulls them both away from the wheel, because they are crossed over and on springs on mounts, the pads are pushed into the wheel rim by this action causing the bike to stop or slow down. this is all controlled by the brake lever.

Answer 2

Just like any other disc brake out there. the rotor is pinched between pads in the caliper, and the friction slows the wheel down.
Just like they do on a car or a motorcycle. The disc AKA rotor passes between two brake pads that sits in a caliper. When the brake is actuated the rotor gets pinched between the brake pads by the caliper and the friction slows the rotor, and the wheel down.

Answer 3

The coaster brake (rear brake) on many simple bicycles uses a one-way clutch in the chain and gear assembly, and a set of plates inside the rear wheel hub. When the pedals are moving forward, they engage the chain; when they are not moving, the wheel spins freely (bike coasts). When the pedals are turned in the opposite direction, it pushes the plates against the wheel hub to slow the bike by creating friction. Coaster brakes will not work if the bicycle's chain comes off, preventing the coaster brake from engaging. There is usually a large metal bar attached to the bike frame to keep the brake from turning freely.

Caliper (hand) brakes work differently, and may be used on either wheel. When the handle is squeezed on a caliper brake, two pads mounted on the frame are pushed onto the wheel rim, again creating friction to slow the bike.

These two kinds of brakes are analogous to the axle brake (drum brake) and the disc brakes (rotor and pad) that are found on automobiles.

Answer 4

Pretty much the same way they work in every other place. When the lever is pressed an piston pushes against the fluid. The pressure is transferred to the brake caliper, causing the brake pads to move against a rotating surface and slow it down.

Answer 5

Pneumatic means "air pressure".

AFAIK there are no pneumatic Bicycle brakes.

Answer 6

Brakes on bicycles does the same thing as on almost any vehicle. They slow the vehicle down by creating friction between a moving part and a stationary part.