ROTOR VEGAST 3D+ road crank arm black  NEW

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  • VEGAST

    VEGAST is inspired by ROTOR’s racing heritage to commemorate our 3 historic victories of the Grand Tours - Tour de France (2008), Vuelta España (2011) & Giro Italia (2012). Our new crankset is named in honour of 3 of the highest climbs of these iconic races: VEleta – GAlibier - STelvio. so you can challenge yourself on the steepest of cycling climbs.

    VEGAST 's innovative modular system allows you to select each crank component based on your unique bike setup and physical characteristics and includes both Road & Track versions. Choose your set-up from ROTOR’s one-piece Q RINGS or Round Direct Mount chainrings or classic spider plus oval or round chainrings.

    Direct Mount technology features a proprietary spline interface connecting crank arm, axle and chainring allowing you to easily assemble and disassemble your crankset with only one bolt.

    Combined with Q RINGS, OCP mount technology allows you to adjust your Optimal Chainring Position (OCP) to within one degree increments to precisely configure your unique OCP to maximize power output to your distinct pedaling style.

    Crafted using expert CNC processes, VEGAST includes our Trinity Drilling System, with three internal holes from axle to pedal, giving the dual benefit of an exceptionally light crank with superior stiffness to take on the most challenging rides.

    • Weight: 383,8 g (175mm w/o chainrings & axle)
    • Spider: Direct mount, 110x4 individual rings
    • 1x and 2x Compatible
    • Sizes : 170/172.5/175
    • Q-Factor: 148 mm / 153 mm depending on axle choice, rim or disc
    • Chain line: 43.5 mm / 46 mm depending on axle choice, rim or disc
    • Material: Forged 6082 aluminum
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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
    ROTOR Spacers ChartAttachment
    599.88 KB
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This item is crafted in Spain