Limited Slip Differentials

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Limited Slip Differentials

• By Usman Akhtar

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Normal Differential

• On every car a basic differential is fitted to to
  distribute the engine's power to the driving
  wheels. 

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Formal Definition

• A Limited Slip Differential (LSD) is a modified
  or derived type of differential gear arrangement
  that reduces wheel spin, especially when
  cornering at high speed by allowing for some
  difference in rotational velocity of the output
  shafts. Limited Slip Differential (LSD) does not
  allow the difference in speed to increase beyond
  a preset amount. By limiting the velocity
  difference between the pair of driven wheels,
  useful torque can be transmitted as long as there
  is some friction available on at least one of the
  wheels.

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1-Way, 2-Way, 1.5-Way
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Summary

• The Limited Slip Differential (LSD) reduces wheel
  spin while cornering at high speeds to maintain
• Go-kart like handling.
• Optimum traction between tires and pavement.

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References

• Minis Definition of Limited Slip Differential,
  http//www.motoringfile.com/2004/11/16/minis_defin
  ition_of_limited_slip_differential, October 20,
  2005
• Limited Slip Differential, http//www.club4ag.com/
  faq20and20tech_pages/limited_slips_differential_
  101.htm, October 20, 2005