ROTOR ALDHU axle 30mm Road QF

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  • ROTOR Axle Road

    Our new ALDHU and VEGAST axle features a cleverly designed spline interface when mounted to the spider or Direct Mount chainrings delivers a robust yet smooth engagement allowing you to maximise the efficiency in transmission of power in your pedal rotation.

    Combined with our new modular ALDHU and VEGAST cranks and Q RINGS oval chainrings or Round chainrings, the innovative axle includes refined OCP Mount technology so you can now adjust your optimal chainring position by precise one degree increments.

    Engage your unique OCP to unleash a more efficient pedal stroke, reducing knee stress and possible injury.

    OffSet and Standard versions available

    • Weight OffSet: 99 g
    • Weight Standard: 96 g
    • Q-Factor: 147mm (Standard) / 152mm (Offset)
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    • Why Q-rings?
    Biomechanical studies indicate that the effort made with Q-Rings becomes a greater performance and pedaling feeling more rounded and smooth due to their ability to make a better use of the strongest muscle groups while they also compensate the dead spot in pedaling.
    Q-Ring-Round Ring Comparison
    Far from feeling unusual, a Q-Ring feels much rounder than a round ring. A spinscan analysis visualize a cyclists power delivery, with a bar graph indicating the variation from maximum to minimum output and a polar graph showing the rotating shape of the power profile.

    By comparing the left hand Round chainring spinscan and the right hand Q-Ring spinscan below, one can see that Q-Ring graphs are clearly smoother (less variation in torque in the bar graph) and fuller (less of a peanut shape at the weakest point).
    Spinscan
    When one projects a polar plot of a typical spinscan over the varying drivetrain resistance of a 53t Q-Ring during its rotation, the value of a Q-Ring is clearly visible: Maximum power is met with a “56,5t” Time trial sized chainring diameter and minimum power is met with a “50,4” compact size chainring diameter.
    This variation creates the “perfect spin” we all aspire to, that simply isn’t possible with round chainrings. This is because Q-Rings compensate for the weakest zone of the pedalling stroke and maximize use of the most powerful zone.
    Key benefits (based on ROTOR study)
    • All Q-ring TT’s were faster, with an average gain of 1.6 sec and 0.7 km/h (1.8%).
    • All Q-Ring TT’s generated more power, with average increase of 26.7 W (6.2%)
    • Reduced oxygen consumption and heart rate in submaximal tests
    • An immediate performance increase on switching from round rings to Q-Rings
    • An immediate performance reduction on switching back to round chainrings
    • It also appears that the more effort a cyclist exerts, the greater the benefit of Q’s

    Please see this article for more detailed information.
  • Attachements
    Front derailleur adjustmentsMode d'emploi
    		517.09 KB
    Which bottom bracket do I need?Mode d'emploi
    		894.62 KB
    Which bottom bracket do I need?Mode d'emploi
    		894.62 KB
    Q-Ring adaption guide / Starting with Q-RingsMode d'emploi
    		194.47 KB
    Q-Ring adaption guide / Starting with Q-RingsMode d'emploi
    		108.76 KB
    Installation Guide - ES / ENMode d'emploi
    		5.90 MB
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Ce produit est manufacturé à la main en Espagne