This is what a Limited Slip Differential (LSD) is
Posted by Sabareesh Moorthy
Limited Slip Differential - A 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.
The main advantage of a limited slip differential can be seen 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 freely—the torque transmitted will be equal at both wheels, but will not exceed the threshold of torque needed to move the vehicle, and 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 off-road vehicles, having a LSD helps getting better traction.
May the FOURs be with you - JEEP
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