Braking force for the linked brake system is based on input form the R1’s six-axis Intertial Measurement Unit (IMU), which consist of three gyro sensors that measure pitch, roll, and yaw, as well as three G-sensors that transmit data on forward/backward, left/right and up/down acceleration. “By constantly analyzing this data 125 times per second, the IMU is able to establish the R1’s position and behaviour – including lean angle, slide speed and pitching rate. Data is then sent via a CAN system (Controller Area Network) to the ECU that makes real time calculations and instantly adjusts the R1’s various electronic control systems in order to achieve optimum performance with high levels of controllability,” Yamaha says.
That, however, is just the tip of the R1’s electronic package; In addition to ABS and linked brakes, the 2014 R1 will come standard with a rear wheel Slide Control System (SCS), Traction Control System (TCS), Front Lift Control system (LIF), Launch Control System (LQS), Quick Shift System (QSS), and Yamaha Ride Control system (YRC), which offers four presets for quick and easy selection of all electronic controls through handlebar switches. “In the YRC, each of the control modes can be freely adjusted into new combinations based on user preferences and riding environment,” Yamaha says.
The majority of the aforementioned electronic rider aids are made possible by the six-axis IMU. The Traction Control System, for instance, takes bank angle into account when controlling rear wheel traction, then manipulates power output by adjusting throttle valve angle, fueling, and ignition timing accordingly. Similarly, the R1’s Slide Control System adjusts engine output via the ECU to limit sideways movement of the tire, which will theoretically help keep the tires in line.
The Yamaha’s Lift Control System keeps wheelies in check at the exit of a corner, whereas the Launch Control System enables more efficient starts by restricting engine rpm to just 10,000 rpm. All electronic rider aid settings are made via a rectangular Thin Film Transistor (TFT) liquid crystal display with bar-type tachometer, speedometer, and brake pressure display. A street mode (displays gear position, odometer, fuel figures, and more) or track mode (displays lap number, lap times, and tachometer which starts at 8000 rpm) are standard.