Originally Posted by davidshain
2 wheel drive that is! Stupid keyboard!
With an open differential it very well could be a 1 wheel drive depending the surface conditions. That's why a locker was suggested.
I'll never forget the first time I learned about open differentials. I had my 2wd truck parked in the driveway during the winter. One rear wheel on ice and the other on gravel. I tried to pull it forward and it would not go anywhere. What the heck is broken now I thought, an axle? I had the wheels off and was pushing and pulling. Turning and wiggling. Brakes weren't binding, etc. Went to the internet and started reading about 2wd and then I realized my foolishness. With an open differential if one wheel loses traction(like on ice) all the power goes to that wheel leaving none or little for the other wheel even though it was on gravel. You may have heard the phrase "one wheel wonder". This refers to 2wd with open differential. This is what the vast majority of 2wd's are. So your post was not that far off.
A locker would basically lock the two wheels together so they get equal power all the time. I've never had a locker or know how they handle, but it sounds like a decent option. If you can lock the rear wheels when you get stuck it certainly would be better than the one wheel wonder.