Читать книгу Proficient Motorcycling - David L. Hough - Страница 63

You may have observed that rear-wheel braking can make lots of smoke and noise but doesn’t slow the machine nearly as quickly as the front brake does. Braking the wheel to a stop doesn’t necessarily stop the bike. That’s because the maximum braking force you can apply to a wheel depends upon traction, and traction is a function of the weight on the tire as well as the stickiness of the tire and roughness of the road.

Theoretically, if one-half of the total weight of the motorcycle, including rider and load, is carried on the rear tire, the maximum braking force you can get out of the rear tire is one-half the weight of the machine. So if the total weight is 800 pounds with a weight bias of 50/50, the maximum rear-wheel braking force would be 400 pounds However, since even rear-brake application transfers weight forward, rear-wheel brake force would decrease, encouraging the rear tire to skid.