Originally Posted By: Ducked
Puzzled. Y'all are talking about engine braking, presumably, but I thought y'll drove automatics, which (on my only automatic so far, 2 RWD), gives you very little. Is it specially enhanced in 4WD?
Nope. If you're in "classic" 4wd with a locked center differential when one axle locks it transfers braking power/ zero MPH status down the driveshafts to the other axle which then simultaneously locks.
On the flipside if you're threshold braking you then get a hundred or so pounds of rotating inertia from the not-yet-locked axle trying to prevent a nuisance lock-up of the one temporarily on an icy patch.
My yard plow truck has no front brakes but in 4WD the braking power from the rear axle "conducts" forward and I can lock most of the wheels. Works pretty well! The only funny thing is that potentially one front wheel would be spinning backwards while the other rolls forwards thanks to that axle's differential.
Puzzled. Y'all are talking about engine braking, presumably, but I thought y'll drove automatics, which (on my only automatic so far, 2 RWD), gives you very little. Is it specially enhanced in 4WD?
Nope. If you're in "classic" 4wd with a locked center differential when one axle locks it transfers braking power/ zero MPH status down the driveshafts to the other axle which then simultaneously locks.
On the flipside if you're threshold braking you then get a hundred or so pounds of rotating inertia from the not-yet-locked axle trying to prevent a nuisance lock-up of the one temporarily on an icy patch.
My yard plow truck has no front brakes but in 4WD the braking power from the rear axle "conducts" forward and I can lock most of the wheels. Works pretty well! The only funny thing is that potentially one front wheel would be spinning backwards while the other rolls forwards thanks to that axle's differential.
