Or the manufacturer builds the trailer with too light of an axle. That is evident by the drop on the axle being upward from original design. If it is over weighted it will fail, but as Mark states, the normal thing I see is too much axle for the intended use. As a group, we tend to think only a 3500 pound axle will work off road, but with that axle most remove a leaf. The 3500 pound axle has better braking and bearings, overall stronger. Torsion axles can be built to the trailer spec. Again as Mark has stated, these things are nearly bullet proof. I have built trailers for nearly 30 years, and never seen one fail as described above. I am sure it can happen, but history of how and why it happened is needed.
I would agree that what AT offers is more adjustable, and repairable in the field, again if the parts are carried. Martyn and Mario make great products, but I doubt they share their failures with the public.
Either Dexter or Alko torsion axles are used on almost all military trailers under 5k currently and according to Phil Duckworth (National Sales Manager) of Dexter axle, they have passed the 10K and above testing. Meaning the majority of military trailers, US and NATO forces will use a torsion axle that is nearly identical to the ones available to the general public. This is one of the main reasons you are seeing the military trailers being sold currently, to make room for the new trailers setting at bases all around the country.
These are extremely economical, less moving parts and proven world wide. Not saying they are the only answer, but they are far from being unreliable.
Also, a trailer is no different than the tow vehicle. If you lower the air pressure on the tow vehicle, the trailer follows suit. I ran Goodyear MTR's at 8 pounds on the truck and 5 on the trailer before, it handled anything I could find to drag it across.
Timbren may be a great alternative, not sure as I have never tried them, but with the tires we run it puts a lot of torque on the set up, a cross member between the two, I think should be considered. The frame needs to be built differently. With the Dexter/Alko axles, they actually become a cross member for the trailer and make the frame much stronger.
I would agree that what AT offers is more adjustable, and repairable in the field, again if the parts are carried. Martyn and Mario make great products, but I doubt they share their failures with the public.
Either Dexter or Alko torsion axles are used on almost all military trailers under 5k currently and according to Phil Duckworth (National Sales Manager) of Dexter axle, they have passed the 10K and above testing. Meaning the majority of military trailers, US and NATO forces will use a torsion axle that is nearly identical to the ones available to the general public. This is one of the main reasons you are seeing the military trailers being sold currently, to make room for the new trailers setting at bases all around the country.
These are extremely economical, less moving parts and proven world wide. Not saying they are the only answer, but they are far from being unreliable.
Also, a trailer is no different than the tow vehicle. If you lower the air pressure on the tow vehicle, the trailer follows suit. I ran Goodyear MTR's at 8 pounds on the truck and 5 on the trailer before, it handled anything I could find to drag it across.
Timbren may be a great alternative, not sure as I have never tried them, but with the tires we run it puts a lot of torque on the set up, a cross member between the two, I think should be considered. The frame needs to be built differently. With the Dexter/Alko axles, they actually become a cross member for the trailer and make the frame much stronger.