ROTOR Q-Ring Shimano 110x4mm 38T inner black

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  • You are brand-loyal yet you cultivate your taste for components based on performance gains; selectivity marks your choices. There’s no need to swap out your Shimano cranks to accommodate our wind-shucking aero Q-Rings, ROTOR has crafted Q-Rings AERO Shimano 110x4 just for you. In addition to biomechanical performance, there was one more important factor when designing our Q-Rings: compatibility. We wanted everyone to be able to ride Q-Rings so we designed special Q´s for cranks requiring a specific bolt pattern. Q-Rings Shimano 110x4 for your compact cranks feature subtle 10% ovality and take advantage of the most-productive part of your pedal stroke by working with your body´s biomechanics to yield maximum efficiency. Choose from 3 Optimum Chainring Positions (OCP) to fine-tune your improved riding experience and go further and faster with less fatigue

    Weight:
    173g per set 52A/36

    Sizes:
    • Outer- 54A, 53A, 52A, 50A, 46A
    • Inner - 44, 38, 36 , 34t

    Characteristics:
    • 100% CNC-machined, 7075-T6 aluminum alloy
    • Aero design: reinforced rigidity and aerodynamics
    • Steel shifting pins
    • 3 OCP points (2-3-4)
    • Designed to work with all 9, 10 and 11 speed groupsets
    • Specific bolt covers for improved aesthetics (sold separately)
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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
  • EAN/UPC
    Factory number:C01-020-23010-0
    EAN:8434366001357
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  •  Q-Ring Shimano 110x4mm 38T inner black48487
    • MPN: C01-020-23010-0
    • EAN: 8434366001357
    		59.90 €
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This item is crafted in Spain