Do I have Posi or LS!

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Do I have Posi or LS!

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Do I have Posi or LS! - 2/2/2007 4:32:42 PM

MadMikeZ28

Posts: 3771
Joined: 7/15/2006
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I went to great effort to copy and paste this. Hopefully it takes care of this question that keeps coming up.

Limited slip differential

From Wikipedia, the free encyclopedia
(Redirected from Limited Slip Differential)Jump to: navigation, searchIn automotive applications, a limited slip differential (LSD) is a modified or derived type of differential gear arrangement that allows for some difference in rotational velocity of the output shafts, but does not allow the difference in speed to increase beyond a preset amount. In an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the expense of greater complexity.
The main advantage of a limited slip differential is found by considering the case of a standard (or "open") differential where one wheel has no contact with the ground at all. In such a case, the contacting wheel will remain stationary, and the non-contacting wheel will rotate at twice its intended velocity – the torque transmitted will be equal at both wheels, but will not exceed the threshold of torque needed to move the vehicle, thus the vehicle will remain stationary. In everyday use on typical roads, such a situation is very unlikely, and so a normal differential suffices. For more demanding use however, such as driving off-road, or for high performance vehicles, such a state of affairs is undesirable, and the LSD can be employed to deal with it. By limiting the velocity difference between a pair of driven wheels, useful torque can be transmitted as long as there is some friction available on at least one of the wheels.

Contents[hide]

1 Types

1.1 Torque Sensitive

1.1.1 Clutch Type - Driveshaft Torque Activated

1.1.1.1 Characteristics

1.1.1.2 Mechanism

1.1.1.3 Servicing

1.1.2 Geared Torque-Sensitive Diff

1.2 Speed Sensitive

1.2.1 Viscous

1.2.2 Gerotor Pump

1.3 Other Related Final Drives

1.3.1 Spool