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The floating crown holder Birel ART HQ is machined in an aluminum alloy of aeronautic quality, offering a perfect balance between lightness and robustness. Its ring system allows a slight lateral movement of the crown, thus compensating the micro-alignments and bendings of the rear shaft during passages on vibrators.
Compatibility: Trees of diameter 50 mm (Standard competition).
Make: Origin Birel ART / Charles Leclerc / Ricciardo.
Material: High strength aluminium anodized black or red.
System: Floating on treated sockets (HQ) for fluid slide.
Screw: Included clamping screws on the shaft and mounting studs crown.
Magickart Loyalty Program: By equipping your chassis with this cutting edge crown holder, you collect loyalty points for your next purchases of crowns or chains!
"A fixed crown holder is often too rigid. If your alignment is not 100% perfect, the chain pulls on the engine and you lose power. My expert advice: The floating model HQ is a blessing, especially on demanding tracks like Alès. It allows the transmission to 'breathe'.
The essentials with your floating crown holder:
Crowns CZ or AFAM: Use high quality crowns to avoid spoiling the accuracy of the floating system.
Competition chain (CZ or DID) : A new chain on a floating crown holder is the ideal combo to win a freewheel.
Chain and Lubricant Cleaner: The floating system must remain clean. If gum or dirt accumulates in the rings, it loses its efficiency.
A little pro secret: Check regularly that the floating casings are not gripped. The crown must be able to move slightly by hand. If it is blocked, a cleanup and a drop of fine oil are enough. At Magickart, all we can do is float on our racing chassis!"
Tree cleaning: Spend a stroke of fine emery canvas on the 50mm tree before threading the crown holder to avoid any hard spot.
Installation: Position the crown holder in front of the box/engine output sprocket.
Lock: Press the locking screws symmetrically so as not to distort the hub.
Verification: Once the chain is laid, turn the tree empty. You will see the crown self-align. That's where you earn watts!
Certified Performance: We select "HQ" versions (High Quality) for superior durability.
Expertise Transmission: A bad choice of crown holder can break a chain in the middle of the final. We're avoiding this stress.
Fast Delivery: In stock and ready to be shipped for your next test in the Occitan League.
Ready to release your transmission Birel ART? We're sending you that floating crown holder?
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The floating crown holderBirel ART HQis machined in an aluminum alloy of aeronautic quality, offering a perfect balance between lightness and robustness. Its ring system allows a slight lateral movement of the crown, thus compensating the micro-alignments and bendings of the rear shaft during passages on vibrators.