Apologies for a slight hijack on the thread
@The Goodwins,
@yabbietol I am interested to know more on the hesitations about using a WDH. We have a HR one and am very comfortable with it as can see it lift the car back up and certainly puts the "feeling" back into the steering. We only have a light van compared to others here. I am not defending or anything, just my thoughts so far. I have only towed on-road with them, but am planning a decent trip in a couple of years and dirt roads will be a good portion of the trip. What issues can happen? I am curious as we are looking at changing our tug to a new Prado in 2 years time so will need to look at what needs to be done/changed when we do.
Thanks
BJ.
These are the WDH problems I am aware off:
Basically WDH re-distribute load they do not eliminate it. So therefore, if you stress the tow vehicle by going over bumps and potholes you move the stress from the high strength (and rated) towing hitch via the attachment points, to other parts of the tow vehicle body that may not be designed to take the transferred (often shock) loads. So WDH generally work well on smooth surfaces, but can cause damage on irregular services. It is often recommend that a WDH be disconnected when driving on rough services.
A classic trap in rural areas are cattle grids which are often elevated and so as the tow and van cross them (often too quickly) the grid then may cause major damage to body and chassis of the both tow and van. Also steep dips can be another trap for the same reasons, but he forces act in the opposite direction to grids. These and other similar obstacles are why Treg and Mchitch are popular with off road tow (see the Gall Boys video on the Mchitch web site). These off road hitches allow a much more even distribution of forces (than a conventional ball hitch) and more freedom of movement when tow and van are at significantly different angles.
Another significant problem with WDH they often reduce the turing radius of tow and van, so going around tight corners and roundabouts can become interesting. Also often the WDH in a tight turn can gouge the road surface and again place stress on the tow and van. On standard height vans WDH can also significantly reduce the ground clearance of the A frame to a dangerously low level, especially with steep gutters and drains.
WDH work, but should be used within their limitations. The lighter and better balanced the van the less load WDH need to redistribute and they of course help to keep the front wheels of the tow in better contact with the ground and the tow level (which is a very good thing). WDH are a classic case of an old technology that works in well many situations, but not all.
I am sure others on this forum could explain some of this better, but this is the best I can do in a reasonable length post.
Hope this helps.
Regards
Terry