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Scrub radius is changed whenever there is a change in wheel offset. For example, when the wheels are pushed out from the body of the car the scrub radius becomes more positive. Older cars tended to have very close to zero scrub radius but often on the positive side, while newer cars with ABS tend to have a negative scrub radius (this is why ...
The 5 / 8 offset was used in all the major variations of the Dana 70 and is still being used today. A 31 ⁄ 32-inch (25 mm) offset was used for a short time in the late 1980s to the early 1990s to allow even higher gears than the 5 / 8 offset could offer. Only the Dana 70-3HD used the 31 / 32-inch offset.
A positive offset means the hub-mounting surface is closer to the outside edge of the wheel, while a negative offset means the hub-mounting surface is closer to the inside edge of the wheel. A wheel with too much negative offset will be closer to the edge of the fender. This can cause clearance issues between the tire and the fender.
An inboard brake is an automobile technology wherein the disc brakes are mounted on the chassis of the vehicle, rather than directly on the wheel hubs. Its main advantages are twofold: a reduction in the unsprung weight of the wheel hubs, as this no longer includes the brake discs and calipers; and braking torque is applied directly to the chassis, rather than being transferred to it through ...
The most common wheel speed sensor system consists of a ferromagnetic toothed reluctor ring and a sensor (which can be passive or active). The tone wheel is typically made of steel and may be an open-air design, or sealed (as in the case of unitized bearing assemblies). The number of teeth is chosen as a trade-off between low-speed sensing ...
This offset meant that a different carrier and a different ring and pinion had to be used. Dodge Cummins pickups from the "First Generation" that are not equipped with an overdrive transmission commonly have the 3.07:1 Dana 61 front axle because the higher gears are necessary to achieve reasonable road speeds at the low 2500 rpm governed speed ...
When a wheel is pushed upwards by a bump in the road, the inertia of the wheel will cause it to be carried further upward above the height of the bump. If the force of the push is sufficiently large, the inertia of the wheel will cause the tire to completely lift off the road surface resulting in a loss of traction and control.
Spindles or uprights - Jaguar left and Holden Gemini right The wheel spindle in the illustration is colored red. In an automobile, the wheel spindle, sometimes called simply the spindle, is the part of the suspension system that carries the hub for the wheel and attaches to the upper and lower control arms.