Enclosed inside a main-housing there are two sets of worm-gears
which work together with their relevant Driving-gears and Exit-shafts.
Similar to other LSD's the housing is driven. The housing transmits
the torque via the two sets of worm-gears to the driving gears
5 and 6 which in turn transmit torque to the exit-shafts. The
worm-gears are obstructingly coupled to the driving-gears. Advantages
of the design are, very smooth operation and long life.
The LSD uses the special attribute of the worm-gear for
variable locking as follows. The locking action between
the left and right worm-gear sets depend on their angle
of inclination to each other, ie. the greater the angle
the greater the locking effect. The angle increases proportionally
to the increase in difference of rotation of the left
and right wheels. The locking action therefore smoothly
increases from a preset 10% to a maximum possible limited
slip of 75%. The latter figure is predetermined by the
pitch angle of the worm-gear during manufacture.