Little jeep- in deed many manufacturers have different set up instructions. On my set-up the instructions called for an even squat all around. Also indicated on different web sites such as this one on bullet 8;
Wilson- besides the point that it sound as you haven't had either the need to use one or been around anyone who used a wdh, the point you're missing is that in many applications they are absolutely necessary. The rigs you have seen in off-road places, where the trailer being towed is a flat bed whose load you can manipulate it is different. I can see why you would assume that wdh are bunk. A jeep being hauled on a flat bed can be pulled forward or backwards from the trailer's axles. Thus applying more or less tongue weight. In fact, if you pulled the jeep far enough towards the rear of the trailer axles you can take off tongue weigh from the tow vehicle.
On an Rv scenario such as mine, the 500 lb. tongue weight is not manipulated as easily to that extend. When I bought my camper, I bought it home with no wdh. The unsafe front axle lift and swaying that occurs—especially when an 18 wheeler passes you—is not something I've ever do again.
Simply put, look around Rv's being pulled. I seldom—and I mean seldom—see anyone pulling with out a wdh.
It creates a even and effortless towing driving condition.
As far as the physics remark. I did not study physics in college. But I did take algebra. :-/
With that, I can tell you that when I take the rig to the nearest weight scale at a near by truck stop, they weight each axle The bars on the wdh can move 100 plus pounds quite easily over the WJ unibody. I can adjust (by number of links on the chain) the weight to be distributed.
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