What is Limited Slip?
Backgroud: Differentials transmit power to the wheels while allowing them to rotate at different speeds.
Introduction of Limited Slip: • Differential consists of a set of discs and clutches inside a housing that provide a friction coupling between the two axles. • Clutch type most common – has a spring pack and a set of clutches. Some of these have a cone clutch that is just like the synchronizers in a manual transmission.
Issues with Limited Slip:
• Stalling - when one wheel loses traction and the vehicle does not move. • All of the driving torque is taken away by the wheel with less traction. • Chatter? • Slow-moving clutch prone to stick and then slip in a repetitive fashion unless a lubricant with the proper frictional characteristics is used. • Noise resulting from stick-slip (engagement-disengagement) phenomenon that occurs between the elements of clutches at low speeds. Additives, called friction modifiers, are used to impart proper frictional characteristics to the lubricant to overcome this problem.
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