ROTOR Directmount double chainring oval for 2INPower DM/INPower DM/Aldhu/Aldhu24/Vegast black matt

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  • Q RINGS DM Oval Chainrings

    Our new one-piece Q RINGS oval direct mount chainrings include refined OCP Mount technology so you can now adjust your optimal chainring position by precise one degree increments.

    Q RINGS oval direct mount chainrings are machine CNC’d from single blocks of ultralight aeronautic-grade 7075 aluminum. The integrated configuration means a simplified lightweight solution without compromising on durability. With fewer individual parts we’ve shaved precious grams off the component weight and focused on delivering you ease of assembly and maintenance. The unique design of the teeth provides a consistently fast and precise gear shift in the most challenging of cycling conditions.

    Why Q-Rings?
    Q-Rings are ovalized chainrings designed to reduce the negative effects of the “dead spots” during a pedal rotation. Because of their oval shape, Q-Rings boost cycling performance by varying drivetrain resistance during pedaling inline with the legs’ natural strengths and weaknesses.

    How do they work?
    The way Q-Rings work is, by orienting the narrowing diameter of the oval to the weakest point of the pedal stroke and the widening diameter to the strongest point of the pedal stroke, you can take full advantage of the most-productive part of your pedal rotation (while lessening time spent in the least-productive part).

    What does the OCP system do?
    OCP represents the different setup positions that ROTOR Q-Rings offer to fit a rider’s distinct pedaling style. Q-Rings feature up to 5 OCP´s, with OCP 3 as an intermediate starting point, all to optimize your pedaling style. OCP is intended to ensure an ideal chainring orientation with respect to how you pedal your bike.

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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 adjustmentsinstruction manual
    517.09 KB
    Which bottom bracket do I need?instruction manual
    894.62 KB
    Which bottom bracket do I need?instruction manual
    894.62 KB
    Q-Ring adaption guide / Starting with Q-Ringsinstruction manual
    194.47 KB
    Q-Ring adaption guide / Starting with Q-Ringsinstruction manual
    108.76 KB
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