The automotive industry has evolved year with year to give us the best in each of the systems that have a car. Brakes are no exception, in our days, two types are used mainly, disk and drum, their function is the same, but efficiency may vary according to the situation they face or the car in which they are.
Drum brakes are an older system than in theory already reached the limit of its evolution. Its function consists of a drum or cylinder that turns at the same time as the axis, inside it there are a pair of ballasts or shoes that when the brake is pressed, are pushed against the internal part of the drum, creating friction and resistance, so Both braking the car advancement.
This system has been used for decades and was even in racing cars and four wheels. While its advantages are the low cost of production and isolation that have external elements when practically closed, its great disadvantage is the lack of ventilation.
Due to the lack of ventilation, they produce more heat and if they are constantly required they tend to fatigue and cause loss of braking capacity, lengthening braking. In more extreme cases under constant punishment such as circuit management, for example, they can go at risk of fracturing.
Besides as the ballasts wear out, it is necessary to adjust them so they do not lose strength and maintain the balance with the front brakes. Currently this type of brakes only appears on the rear axle of several relatively accessible cars, the reason is just that, which are less expensive to build, maintain and repair.
They tend to find themselves mostly in small segment cars, that is, compact, subcompacts and urban, from time to time in some light pick-up. This happens since these vehicles are not so heavy and are not designed to offer or be used in plaintiff driving as it would be that of a sporty or great tourism. If you drive without exceeding speed limits and you are smooth in braking, although you make extremely long trips, you will have no risk of fatigue them.
Post time: Nov-20-2021