ROTOR Flow crankset 110mm

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  • The moment you clip in and set off in pursuit of performance, that´s when you know how fast you can actually go. Designed using CFD (computational fluid dynamics) to maximize benefits, the paradigm-changing FLOW aero crank was made for both aero road bikes and pure TT bikes.

    It offers the time savings of classic aero cranks and the performance of leading road cranks, all at once. The focus on stiffness and functionality allow the FLOW to match and even beat full aero cranks in the real world. Stiffer than any other aero crank on the market, the FLOW saves you up to 6 seconds in a 40k TT.

    Sizes:
    160/165/170/172.5/175/177.5/180mm

    Weight:
    172.5mm length 110 MAS 554g - 130 MAS 575g

    Characteristics:
    • Spider: 110/130 BCD aero MAS version
    • Spindle: 30mm aluminum alloy
    • Q-Factor: 148mm
    • Chainline: 43.5mm
    • Material: aluminum alloy 7055 100% CNC-machined
    • Compatibility: Bottom bracket BSA, ITA, BB86, BB30, BB30A, PF30, BBRight, BB386 Evo, Oval and round chainrings, 110/130 BCD, 9,10 y 11 Speed
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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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This item is crafted in Spain