A live axle is a type of beam axle suspension system that uses the driveshafts that transmit power to the wheels to connect the wheels laterally so that they move together as a unit. Suspension is the term given to the system of springs, Shock absorbers and linkages that connects a Vehicle to its Wheels Suspension
A live axle consists of a central differential in a single housing that also contains the driveshafts that connect the differential to the driven wheels. This article deals with the concept of a differential in mechanical engineering. The differential is connected to the engine via a swinging propellor shaft and a universal joint. A universal joint, U joint, Cardan joint, Hardy- Spicer joint, or Hooke's joint is a The complete assembly may typically be suspended with leaf springs, coil springs or air bags. Originally called laminated or carriage spring, a leaf spring is a simple form of spring, commonly used for the suspension in A Coil spring, also known as a helical spring, is a mechanical device which is typically used to store energy and subsequently release it to absorb shock or to maintain Air suspension is a type of vehicle suspension powered by an engine driven or electric air pump or Compressor.
Some live axles use trailing arms, semi-trailing arms, Panhard rod, or Watt's linkage to control the vertical and lateral movements of the axle. A trailing-arm suspension is an Automobile suspension design in which one or more arms (or "links" are connected between (and perpendicular to and forward A trailing-arm suspension is an Automobile suspension design in which one or more arms (or "links" are connected between (and perpendicular to and forward A Panhard rod (also called Panhard bar or track bar) is a component of a car suspension system that provides lateral location of the Watt's linkage (also known as the parallel linkage) is a type of Mechanical linkage invented by James Watt ( 19 January 1736 Others, particularly older vehicles, use Hotchkiss drive, in which the leaf springs provide axle location as well as suspension. The Hotchkiss drive is a system of Power transmission. It was the dominant form of power transmission for front-engine rear-drive cars in the 20th century
Advantages and disadvantages
As with any beam axle, the advantages of the live axle are relative simplicity, lower manufacturing costs, lighter overall vehicle weight, and the fact that the axle and suspension systems take up little interior volume. Because the axle assembly is a fairly simple and rigid arrangement, it can easily be made strong and robust, which is an advantage for vehicles with substantial power or that are intended for use in rugged environments or off-road usage. A further advantage of a live/beam axle in off-road use is that ground clearance under the axle remains constant, even if one wheel rises over a bump and the other doesn't.
The principal disadvantage is the negative effect on ride quality and handling. Suspension is the term given to the system of springs, Shock absorbers and linkages that connects a Vehicle to its Wheels Suspension Ride quality refers to the degree of protection offered vehicle occupants from uneven elements in the Road surface or the Terrain if driving Off-road. Car handling and vehicle handling is a description of the way wheeled vehicles perform transverse to their direction of motion particularly during cornering and swerving The wheels cannot move independently in response to bumps. Although the overall mass of the total suspension is low, the mass of the differential and driveshafts are part of the vehicle's unsprung weight, so the greater unsprung mass transmits larger forces to the body of the vehicle and its occupants. In a ground Vehicle with a suspension, the unsprung weight (or more properly the unsprung mass) is the mass of the suspension Wheels Conversely, in an independent rear suspension system the differential is rigidly attached to the vehicle. Independent suspension is a broad term for any Automobile suspension system that allows each wheel on the same Axle to move vertically (i The lower unsprung mass of the suspension results in a greater ability to absorb imperfections in the road. In passenger car applications, often now fitted with multi-link independent suspension, the useful ability to change toe and camber independently left to right under cornering loads is not given with a live axle. Plan view The arms have to control toe /steer and lateral compliance
Applications
Until the 1980s the live axle was the most common rear suspension system on rear-wheel drive cars in the United States. The 1980s was the decade spanning from January 1 1980 to December 31 1989. The United States of America —commonly referred to as the It remains common on trucks, busses and other heavy vehicles, owing to its greater potential robustness and relatively low maintenance requirements, but most passenger cars have now adopted independent rear suspension instead. This article is about the semi-truck For the North American use of the word see Pickup truck.
Examples of some passenger-vehicle types that have employed a live axle with various suspension elements are:
- Leaf springs - the early Land-Rover and Jeep models);
- Coil springs - the Range Rover 1 & 2, Rover SD1, Volvo 760);
- Air bags - the Range Rover 3). Originally called laminated or carriage spring, a leaf spring is a simple form of spring, commonly used for the suspension in Land Rover is an all-terrain vehicle and Multi Purpose Vehicle (MPV manufacturer based in Solihull, England, now operated as part of the Jaguar Jeep is an Automobile Marque (and registered trademark of Chrysler. A Coil spring, also known as a helical spring, is a mechanical device which is typically used to store energy and subsequently release it to absorb shock or to maintain Land Rover Range Rover Classic|Range Rover SportThe Range Rover is a Four-wheel drive luxury Sport utility vehicle (SUV produced by Land Rover in the Rover SD1 is the code name given to a series of large Executive cars made by British Leyland and its successor Austin Rover from 1976 until 1986 The Volvo 700 and 900 series are two ranges of Mid-size car manufactured by Volvo Cars in the 1980s and 1990s Air suspension is a type of vehicle suspension powered by an engine driven or electric air pump or Compressor. Land Rover Range Rover Classic|Range Rover SportThe Range Rover is a Four-wheel drive luxury Sport utility vehicle (SUV produced by Land Rover in the
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