MotoGP®-Level Controllability Yamaha’s Inertial Measurement Unit (IMU) uses six axes of measurement: a gyro sensor that measures pitch, roll, and yaw, and an accelerometer that measures acceleration in the fore-aft, up-down, and right-left directions… all at a rate of 125 calculations per second. The IMU communicates with the ECU, which activates the technologies in Yamaha Ride Control (YRC): Power Mode, Traction Control System, Slide Control System, Launch Control System, Lift Control System and Quick Shift System with rev-matching. All these systems are adjustable and can be saved within four presets in the YRC system.
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Ride-by-Wire Fueling The ride-by-wire Yamaha Chip Controlled Throttle (YCC-T®) system senses the slightest throttle input by the rider and instantaneously calculates the ideal throttle valve opening, and then actuates the throttle valves to actively control intake volume. The R1 also features YCC-I® (Yamaha Chip Controlled Intake), a variable intake system that broadens the spread of power in across the entire rpm range.
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PWR Mode Power Delivery Mode (PWR) lets the rider choose from four settings of throttle-valve response to best match their preferences and riding conditions, adjusting both engine response and overall power.
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Lean Angle Sensitive TCS The R1’s Traction Control System (TCS) reduces rear wheel spin when exiting corners, calculating differences in wheels speeds and in relation to lean angle. As lean angle increases, so does the amount of intervention, with ten separate settings (off and 1-9) enabling the rider to dial in the exact level of control needed.
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MotoGP ®-Developed SCS Yamaha’s Slide Control System (SCS) is the first of its kind on a production motorcycle and comes directly from the YZR-M1® MotoGP® bike. It works in tandem with the IMU, so that if a slide is detected while accelerating during hard leaning conditions, the ECU will step in and control engine power to reduce the slide. This too can be adjusted by the rider, with four settings (1-3 and off).
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Lift Control System The R1’s Lift Control System (LIF) features progressive mapping to improve forward drive when the system intervenes. As before, the IMU detects the rate of chassis pitch and the ECU controls engine power to reduce the front wheel lift during acceleration, with four settings (1-3 and off) for fine-tuning.
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Race Start Control The R1’s Launch Control System (LCS) limits engine rpms to 10,000 even with wide open throttle. It maintains optimum engine output in conjunction with input from the TCS and LIF systems to maximize acceleration from a standing start. Three setting levels regulate the effect (1-2 and off).
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Up and Down Quick Shift System The Quick Shift System (QSS) on the YZF-R1 features downshifting capability as well as allowing full-throttle clutchless upshifting. On downshifts, the ECU matches engine speed on each downshift for instantaneous gear changes with minimal chassis disruption. The QSS can be adjusted with three settings (1-2 and off), as well as turning the downshift function on and off.
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Full Color Instruments The R1 features a brilliant full-color, thin-film transistor (TFT) meter, including front brake pressure and fore/aft G-force readouts, giving the rider even more feedback from the machine. It features both street mode and a track mode that focuses on performance information, such as YRC settings, a zoomed-in view of the tachometer in the upper rpm range, a lap timer with best lap and last lap feature, gear position indicator and speed.
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