In an

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, the wheel spindle, sometimes simply called the spindle, is a part of the

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system that carries the hub for the wheel and attaches to the upper and lower

control arms The Control Arms Coalition is a campaign jointly run by a coalition of over 100 organisations including Amnesty International, IANSA, Oxfam International and Saferworld. The campaign has been active since 2003 in calling for an international Ar ...

. 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