It pushes the coil spring over the shock to the rear side of the vehicle at the time of driving. The effects of a positive caster.Īs you already know, a positive caster occurs when the steering axis tilts in front of the axis of the car. Now, let’s find out the effects of these angles. We’ve already discussed what is caster and how it becomes positive or negative. Functions of a Limited Slip Differential.
Fixing the Issue of Steering Wheel off Center. When the vehicle strays from the straight line you intend to drive toward, it indicates the presence of negative caster. Negative caster occurs when the upper pivot point stays in front of the lower pivot point. Vehicles these days apply this caster angle to prevent inadvertent vehicle turning or veering from the straight trajectory when driving at a high speed. Positive caster happens when the wheel and lower pivot point stay before its upper counterpart. Based on the suspension type, the wheel’s position will be at the south of the upper ball joint or strut point while the axis axis will be vertical to the road. Zero or neutral caster will create a perfect vertical shock or spring. The easiness to steer the wheel and a vehicle’s stability depend on the caster. This formation creates a gradient with the steep line going straight through the bottom pivot point. To visualize the angle, you can imagine the steering axis connecting the lower pivot point or ball joint with their upper counterpart, respectively. It’s measured on the steering wheels when viewing the vehicle side-wise. In simple words, this is an alignment adjustment that occurs only on the front wheels when they are turning. This angle evaluates the back and forth incline of the axis. What Is Caster?Ĭaster, also known as the caster angle, is the slant measured from the top of steering axis to the bottom of the wheel when the former is attached to the latter. In this article, we’re going to focus on what is caster and its effects on a vehicle’s performance. 
So, you can imagine how important these three measurements are. Remember that the suspension system involves tires and their pressure, shock absorbers, springs, and linkages-all components that connect a car’s framework to the wheels. You can adjust these variables to correct the suspension angle and fix various car problems.
Caster is one of them, while the other two are camber and toe. Three common measurements form the suspension geometry of a motor vehicle.
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