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The first is security. We know that serious understeer or oversteer will eventually lead to loss of control of the vehicle, so knowing that their causes and correct methods of treatment can help us prevent and avoid accidents.
1. What is understeer and oversteer
Steering is less commonly known as pushing. The performance is that the actual steering angle of the vehicle in the bend is smaller than the front wheel, that is, the front wheel has slipped to the outside. The shift is more commonly known as tail flick. The performance is that the actual steering angle of the vehicle in the bend is larger than the front wheel's rotation angle, that is, the rear wheel has an outward slide.
2. The causes of understeer and oversteer
Adhesion generated by tires and roads under certain conditions is constant, and changes in centrifugal force and driving force will cause changes in resultant forces. When the resultant force is greater than the adhesion, the tire will slide along the direction of the resultant force. If this tire is located in the front wheel, then there is insufficient steering. If this tire is in the rear wheel, then there is oversteer.
3. Will the front drive be understeer and the rear drive must be oversteered?
One argument we can generally hear is that the characteristics of the front-wheel drive are understeer and the characteristics of the rear-wheel drive are oversteer. This argument is not entirely correct. It is a relatively one-sided statement. It describes the situation where the tire slipping is caused by a change in driving force. The driving force of the front drive is exerted on the front wheels. Suddenly increasing the driving force naturally causes understeering. The driving force of the rear-wheel drive is applied to the rear wheels. Suddenly increasing the driving force naturally causes over-steering. This is a kind of artificially created understeer or oversteer.
There are many factors that we can change artificially, such as increasing centrifugal force or reducing adhesion. Suppose you enter the bend quickly enough that both the front drive and the rear drive will understeer. Also suppose that when the brakes are applied vigorously, both the front drive and the rear drive will oversteer.