Like car carrying trailers compared to boat trailers. The axles are generally further back on a boat trailer . Where the weight is . Depending non days fishing too ??
The article appears to be an example of reasonably good simple engineering, albeit the terminology is not only simplistic but wrong.
For someone to be building a box trailer it would suffice. If one was building a boat trailer or caravan, I would expect that they would seek expert advice prior to building and putting it on the road to ensure that they were building a safe vehicle.
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.