Do You Need a Locker?
A conventional open differential sends equal amounts of torque to both axleshafts (top). If one wheel spins because of lost traction, it is sustaining zero engine torque, so zero engine torque is also going to the wheel with traction. Adding a locking differential—in this case a NoSpin locker (bottom)—mechanically links the two shafts so that power will be delivered to both axles in all circumstances. (Illustration courtesy Tractech) View Related Article
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