Undersized Brain??..... Why?.... I would need to know more before I come to that conclusion. You see what.. maybe 20 seconds or so?.. I have never pulled anything set up like that, but I sure have had four axle lowboys on air get rocking on rare occasions... mainly due to road surface issues.

Glad you saw this Greg, My thoughts were... I have seen that quite a bit. Its dramatic to see from that angle, but not uncommon, Of course I don't know the person pulling that load, but by the looks of that rig, its not their first rodeo.

try pulling one of those before you comment and see if you can hold it without having it rock like that
By watching the video it looks like a tri low with a mechanical booster they are very unstable with a top heavy load.

I've pulled one of these trailers for years and this isn't uncommon, I've had freight boxes get on the cb
and warn me after I've traveled more than 500 miles. I always figure if it hasn't fallen off by then it
probably won't. On a side note that is why i like a beam better for a load like that, it sets there rock
solid.

I'm not bashing Aspen, and I will say incomparison to a Talbert or Nelson, they are far superior trailers. In my eyes, Aspen is side by side with Trailking. I also know that Aspen builds one of, if not the best hydraulic necks in the industry.

What I can say about aspen, is that in comparison to Trailking, they use a lower safety factoring in their designs. Any equipment I have ever speced from Aspen had been notably lighter than the Trailking counterpart. And I'm not talking lowboys. I have species and compared 200 ton dual lane transporters, 65 ton dual lane and 6 axle steerable dollies, wind mill schnabels, 13 axle flat and perimeter decks. They are all notably lighter. Not Diamond Trailers light, but light.

Trailing and Cozad, in particular, use a perpendicular box girder design crossmembers in their goosenecks. That is one thing I have never seen in any other trailer. Some may be doing, I just haven't seen it. Anyways, these crossmembers give the beams of the neck an extreme ability to counteract lateral movement of the neck beams. This is one thing that Diamond, is terrible for!

As I say. I have nothing against Aspen, they are great trailers! They have fantastic user friendliness, I do like the light weight. You just have to choose the right equipment for the freight you intend to move.

I'm not an expert, I've never seen what the American's use. But could the possability of the crane not being loaded directly centred on the trailer, and traveling to fast on the highway also contribute to this sway on the trailer?

Edit: something dad pointed out to me is that the out riggers aren't down. Also, has the suspension on he crane been lowered? That could also cause havock on the sway.

We have Diamond, Fontaine, and Talbert flat deck 13 axles. They are all rated at 80 ton. The Diamond is the lightest, by far! All of the trailer have identical deck height, neck height, and so on. The Fiamond will twist, bounce, rock, roll, and look like the man pulling it is a maniac. Bottom line, same dimensional specs, lighter guage material, less stability.

Here in Australia, we dont have any of these "Beam Trailer's".
But this is the standardd for HH, this here in New South Wales where I live gross combo max is 112t.



Much more stable than the beam traillers. The wider its set the better.

Here in Aus, on a "Lowboy" as you call them, max 4.6m high without permit. I helped move some Komatsu 830E chassis out of Brisbane last year up to central Queensland. Roads up there are 7m wide at the max. We were 8m wide at the top deck of the machine. Trailer opened from 3.2m closed out to 4m wide. It was interesting when we would meet another 4-5m wide load travelling the opposite way. But we managed, and from what I've seen your bad roads are the same quality of our good roads.