Powertrax LOCK-RIGHT Performace Locker - Manual (Page 9)

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locking differentials because wind-up occurs even more quickly
than with standard differentials.
Two LOCK-RIGHTs. The LOCK-RIGHT in the rear axle
produces about 70% of the total difference in traction between
two LOCK-RIGHTs and no LOCK-RIGHTs. Therefore, four-wheel
drive will be needed less often than before because two-wheel
drive now will get you farther. If you are in four wheel drive
where it is not needed, the steering will tend to become stiffer
than normal because of increased friction in the front axle uni-
versal joints and the vehicle also will tend to understeer. This
effect is produced by limited driveline wind-up and continues
until one of the wheels slips a little to reieve the tension. We
therefore recommend that you use four-wheel drive only when
you need it.
A Word About Noise. During the operation of the many
vehicles in which the LOCK-RIGHT has been installed, we’ve
sometimes noticed a couple of “noises” which should be men-
tioned.
a)Click. The LOCK-RIGHT released the outside
wheel in a turn. This means that its coupler (or side gear) rotates
faster than its driver so that the teeth passing by each other pro-
duce a uniform “click-click-click” that can sometimes be heard
during turning. Cold weather and/or thicker oil will decrease the
sound. this clicking is completely normal and lets you know that
everything is functioning properly (also see the section about
trouble-shooting on page 14).
b) Chirp. During cornering, the faster outside wheel
is free-wheeling; the slower inside wheel is under power but is
having weight transferred off as the vehicle leans toward the out-
side. Under a lot of throttle on the street, it may “chirp” on the
pavement as it momentarily loses traction and spins a little to
catch up with the outside wheel. As soon as it is prevented from
rotating any faster by the outside wheel it regains traction. This
action may repeat several times in the course of a powered turn.
This condition does not result from any tire scuffing or dragging
as with some other lockers or limited slip differentials. Applying
only a little throttle will eliminate the noise.