Monday, September 9, 2013 6:23:53 AM
As a bit of a mechanic, and an off-road enthusiast, I'll try to clear up a little confusion about the off-side tires not turning. Some of you are correct, in that, normally, the off-side (raised) tires should spin. This is due to the action of the differential assembly in the center of the axle. Under normal circumstances, under the conditions pictured, the off-side tires should spin at twice the speed as the tires on the ground, or faster. As was stated by turdburglar, a standard "locker" (negates the differential, essentially making it a straight axle) would cause the off-side tires to spin at the same speed as the tires on the ground. What they are most likely using is an "automatic locker", such as a Detroit (manufacturer) "Tru-Trac", which is built into the differential, and automatically locks the tire that is "spinning". Don`t know the exact mechanics of the Tru-Trac, and its kin, but they do work. Any questions?
Sunday, September 8, 2013 8:53:02 PM
freddyferrit - I won't argue about the arm with a wheel. What you said about sending power to one wheel is true...but to be more accurate, the trans axle sends power to the wheel with less resistance...which would be the tire off the ground. Go ahead and try. Lift one of the drive wheels on your car with a jack. That wheel will spin and the car won`t move.
If it`s 4 wheel drive the front and back wheels are separate. So the power would go to the two wheels off the ground