ROTOR REX 1.1 INPOWER crankset 76mm

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  • INpower REX 1.1

    Discover where you push hardest in your pedal stroke, despite varying terrain How you transfer power off-road will vary as much from the way you ride as to where you ride. INpower REX 1.1 single chainring 1x cranks place power meter technology inside the crank axle where is protected it from loose rocks and other shocks, crashes, and outside contaminants like mud, sand, and clay. If you know your Optimum Chainring Angle, which you can find with INpower's TORQUE 360 and OCA pedal analysis, you can dial in your oval QX1 rings to your advantage. CNC-machined in Spain from 7055 aluminum, the INpower REX 1.1 for MTB features unprecedented data sampling technology, which takes into account abrupt changes in terrain like jumps and drops to accurately measure your power output.



    Characteristics:

    • Spider: 76 BCD
    • Sizes: 170/172.5/175mm
    • Battery specifications: AA 1.5 V
    • Estimated battery life: 300 hours riding time
    • Water resistance: IPX7
    • Strain gauges: 4 gauges in the axle
    • Wireless technology: ANT+ 2.4 Ghz
    • Weight without batteries: 549g
    • Data transmitted: power, cadence, TORQUE 360, OCA, torque effectiveness (left side), pedal smoothness (left side)
    • Head unit: ANT+ compatible head units
    • Analysis Software: Trainingpeaks.com/ROTOR
    • Crank Software: ROTOR INpower User Software
    • Q-Factor: 163 mm
    • Chainline: 50.6mm
    • Material: aluminum alloy 7055 100% CNC-machined
    • Compatibility: bottom bracket BSA, BB89, BB92, BB30, PF30, BBRight, Cannondale F-Si Ai (spider sold separately), oval and round chainrings, 76BCD, 9,10 and 11 speed


    ROTOR - Technologies

    INPower - Technical Specifications

    User Software Manual
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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