
Limited-slip differential
Differential gearbox that limits the rotational speed difference of output shafts

Differential gearbox that limits the rotational speed difference of output shafts
A limited-slip differential (LSD) is a type of differential gear train that for on-road use allows its two output shafts to rotate at different speeds, but limits the maximum difference between the two shafts to enforce a minimum of traction, unlike the open differential that allows one wheel to stand still while all power is applied to the other wheel, or a locking differential that locks them together. Limited-slip differentials are sometimes known by the generic trademark Positraction, a brand name owned by General Motors and originally used for its Chevrolet branded vehicles.
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