2.1.1 Automatic Lockers
Automatic lockers are by far the most popular Traction Adding Device,
manufactured by Tractech (Detroit EZ-Locker) and Powertrax (Lock-Right).
These inexpensive ($190-250) units replace the spider gears (and optionally
the sidegears) inside the carrier and do not allow for either halfshaft
to spin slower than the ring gear. These units will unlock around a
turn, however, allowing the outside wheel to free-wheel until its speed
again matches that of the ring gear. They provide 100% lockup, so they
are ideal for difficult off-roading. They are noticeable when driven
on the street, but are not so intrusive as to be unsuitable for daily-driven
vehicles. Their high price/performance ratio keeps them extremely popular.
