This increased modulation and control over how much brake force is exerted depending on how far you pull the lever also means you stand less chance of locking up your wheel when you use the brakes.
The fluid held in the lever reservoir effectively tops the system up over time as the brake pads wear down, so that braking is consistent. When you let go of the lever, the fluid moves back into the reservoir.īrake fluid needs to be able to withstand high temperatures and typically has a high boiling point, far above what a brake would be subject to in normal conditions.īrake fluid is also incompressible, helping to ensure that all the power from the lever is transferred to the pads.Ī hydraulic braking system offers better modulation compared to mechanical cable-operated disc brakes, or rim brakes.īecause a hydraulic system is sealed and there are no cables to stretch, it offers more reliable braking. The brake pads are secured against the pistons, so when the pistons move the brake pads then contact the disc rotor. This forces the pistons to move out from their housing in the caliper (known as the bores).
When you actuate the brake lever, a piston in the lever is depressed, sending fluid down the hydraulic hose to the brake caliper. The correct fluid keeps your brakes working optimally.
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