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Birelart brake pump
Optimize the braking of your kart with the original Birelart brake pump. Certified piece for maximum precision and safety in competition. Fast delivery on Magickart.
Do not replace the seals one by one if your pump is "spongy". The complete kit allows you to leave on a healthy basis.
Type content: The kit generally includes the piston, the primary cup, the secondary cup, the O-rings, the maintenance circlips and sometimes the protective bellows.
When to use it: As soon as you see a loss of constant pressure, an internal leak (the pedal drops gently under pressure), or after a long wintering where the liquid could crystallize.
Although it is a simple room, the internal spring of the 22SR pump filled a major safety function:
Return of the piston: It guarantees that the piston returns to the "rest" position after each braking. If the piston does not return completely, the circuit does not fulfill correctly by the tank, creating a soft pedal or braking that "drag" (drives that heat).
Maintaining pressure: It ensures a constant pre-load for the joints (cups) remain in place.
Reactivity: It allows the pedal to go back immediately as soon as you relax the foot.
On your 22SRR pump, the "pin" (pin or pivot axle) of 5x15mm is the piece that undergoes shear forces at each braking.
Function: It serves as a hinge for the lever that operates the piston of the pump.
Why a specific room? Unlike a metal rod cut at the right time, this pine is in Treated steel (tempered). If you are using a "soft" stem of hardware, it will dig and deform in a few tours, creating an important game in your pedal (the famous "blur" at the beginning of the race).
The 22SR EVO piston is a precision piece. Unlike appearances, it's not just a metal cylinder. It is machined with extremely low tolerances to allow the joints (cups) to slide without flee while generating a constant hydraulic pressure.
The evolution "EVO": It guarantees a surface finish (polishing) optimized to reduce friction and increase the lifetime of the cups.
The cap is not just a lid. It fulfills three essential missions for safety:
Sealing: It prevents the brake fluid (corrosive) from escaping, especially during high track vibrations.
Protection: It isolates the brake fluid (which is hygroscopic, that is to say it absorbs moisture) from the ambient air. Water in the liquid is the enemy n ° 1 of the braking (risk of vapor lock / air bubbles).
Pressure compensation: Most Birelart plugs incorporate a free launching system (or via a membrane) that allows the level of liquid to drop when the pads wear away without creating a vacuum of air in the tank.
The tank is screwed into the body of the pump. Between these two rooms is an O-ring (O-Ring) or a sealing washer that does all the work.
The role of fixing: Hold the tank integral with the pump while ensuring perfect sealing to prevent air from being sucked into the circuit during the pumping phase.
Fragility: The tank threaded tip is often plastic. If you force too much, you risk breaking plastic in The body of the pump (very difficult to extract).