Sport Rider Photos
More pick-up points for a wheel speed sensor to detect gives a higher resolution to the data, enabling a traction control system to react faster. The solid disc used here is a magnetic ring element, into which a strip of small magnets is embedded for more data points and accuracy than a toothed ring. The Yamaha M1s have been seen with sensors on each side of the wheel for redundancy. Also note in this picture the small opening in the fender with gradations, used to quickly measure maximum fork travel using an O-ring on the tube.
Traction Control