What causes caster to exit?
This can be caused by an accident, running over something large, or just wear and tear. An insufficient or excessive caster angle can cause toe wear, even with the toe set to specifications. If the caster is out of adjustment, it can cause problems in straight line tracking.
What is caster angle determined by?
Caster is the measure of how far forward or behind the steering axis is to the vertical axis, viewed from the side. This is measured by drawing a line between the top and bottom pivot points of the front upright. The angle between the drawn line and vertical is the caster angle.
How do you test caster angles at home?
Turn the steering wheel right until the wheel is turned 20 degrees right of straight ahead (turning 40 degrees total). Hold the gauge at a 90-degree angle and the reading will be your caster angle for the left wheel.
What kind of angle is a caster caster?
1. Caster Caster is the angle formed by a line through the pivot points and a vertical line through the stub axle. It can be negative or positive. 2. Camber
What does caster stand for in wheel alignment?
Wheel Alignment: Caster Angle. Caster is the forward or backward tilt of the steering axis viewed from the side of the vehicle. Vehicles with SLA suspensions use the upper and lower ball joints to create the angle, and those with struts use the center of the upper strut mount and the lower ball joint as the angle.
What happens when a caster setting is negative?
The self-aligning torque and straight-line stability that is characteristic of positive caster are absent in a negative caster setting. In fact, a “loose” steering wheel and immense front wheel instability would result from a negative caster setup. Caster’s influence on tire wear Caster settings are not a primary, direct factor in tire wear.
Which is the best caster angle for MacPherson struts?
For a more performance oriented setup on a MacPherson strut you can add a degree or two to have more favorable camber gain at high steering angles. If you are not running power steering, a caster setting of 3 – 4° is a good setup to reduce the weight of the steering and maintain the benefits of positive caster angle.
What is the caster angle on a wheel?
Wheel Alignment: Caster Angle. Caster is the forward or backward tilt of the steering axis viewed from the side of the vehicle.
What happens if your caster angle is too high?
This excessive positive caster will cause a shimmy at higher speeds and excessive steering wheel snapback. Vehicles that specify high positive caster usually have a steering dampener attached to reduce any adverse effects.
Why does caster not set the alignment to Spec?
Both because they aren’t setting the alignment to spec and because they seem to be adjustmenting the wrong variable. Caster’s primary effect is straight line stability.
The self-aligning torque and straight-line stability that is characteristic of positive caster are absent in a negative caster setting. In fact, a “loose” steering wheel and immense front wheel instability would result from a negative caster setup. Caster’s influence on tire wear Caster settings are not a primary, direct factor in tire wear.