So I was out doing some backyard crawling today and I attempted to climb some logs I had cut. I got the front left up to the first log and started up and then only my opposing tires front and back spun and I couldn't climb up even in LO range. Since its full time 4x4, would I have to lock both axles the same diff lock or could I just get away with a rear locker?
I'm going to try to explain whats happening, the tire that IS getting traction, only gets the same torque of the opposing spinning tire, if one tire is in the air your going no where, that's why we like locking differentials, ok that takes care of the front and rear axles side to side power.
Now the transfer case works very similar only front to back rather than side to side and the viscous coupler can distribute the torque a little better than an open differential. So for hard core crawling the 249 with open diffs is not much use.
You can use any type of locker at the back with no issues, does no harm with the 4wd system or doesn't really affect handling much at all. If you have a D44a at the back, you don't have much choise on the lockers. IIRC aussie locker is the only lunchbox locker you can get for an open-carrier D44a, and no full carrier replacement lockers are available.
I wouldn't use an auto locker in the front though with the AWD, get a selectable if you like locking the front as well..
Yea id really just like to lock the rear for the occassional trail ride/snow storm. Although really in knoxville it only snows good two days a year if that lol. its my dd and my boat hauler so really its not a need, just a want. But thanks for the input you guys!