In an

automobile A car or automobile is a motor vehicle with wheels. Most definitions of ''cars'' say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people instead of goods. The year 1886 is regarded ...

, the wheel spindle, sometimes simply called the spindle, is a part of the suspension system that carries the hub for the wheel and attaches to the upper and lower control arms. Spindles are carried by steering knuckles or "uprights". Although, the terms "steering knuckle" and "upright are sometimes used interchangeably with "spindle", they refer to different parts.

Design

There are several considerations when designing a spindle. Loads and forces need to be considered. Vertical and horizontal forces greater than those due to 5 times the acceleration of gravity, that is, approximately 50 meters per second squared, are sometimes considered desirable.

Non-driven wheel

The main forces on a non-driven wheel are braking and turning forces.

Driven wheel

The forces on a driven wheel include forward and reverse propulsion as well as the braking and turning forces.

References

List of Spindles/Uprights available in Australia suitable for Race, Modified and Individuality Constructed Vehicles
Automotive suspension technologies {{automotive-part-stub

Design

Non-driven wheel

Driven wheel

See also

References