Читать книгу Proficient Motorcycling - David L. Hough - Страница 64

During braking, the load on the wheels isn’t a constant. When you apply the brakes, the weight seems to transfer forward onto the front tire, increasing front tire traction. Consider that whether it is engine compression or brake friction trying to overcome forward energy, the braking force is applied way down at the tire contact patches, while the center of mass is much higher on the machine. The mass wants to keep moving straight ahead, and the result is that when the brakes are applied, the motorcycle pitches forward. This feels as if the weight had suddenly been transferred forward onto the front wheel. Since the available braking force is determined by the load on the tire, as the machine pitches forward, more traction becomes available on the front. So more front-brake force can then be applied. Assuming tractable pavement and sticky rubber, it is relatively easy to brake hard enough on a light bike to do a front wheel stoppie, with 100 percent of braking force on the front and the rear wheel in the air.