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The trailer is used as a dumpster on wheels. It has been used as a dump trailer for 16 years. The brackets failed after 14 years of hard use. For years it was at the dump trailer on a weakly basis. The average load was about a ton. With this use the breakage is hardly considered a design flaw...

I understand your concern but the calculations prove otherwise. The class III receiver trailer hitch has a rated capacity of 8,000 lbs. If you perform the calculations for the strength of the receiver hitch tube each side of the tube can take about 4,700 lbs for a total of 9,400 lbs. As far as...

The heim joints are not the weakest link structurally and they are rated for 9,800 lbs each. If the heim joint does start to bend the eyes at the front if the trailer would be on metal to metal contact before catastrophic failure happened. The eyelets are forged lifting eyes. They are not the...

This is the front pin modification This is the tailgate pin modification Some close up pictures of the pivot modification.

The trailer is an old A1 and does not have surge brakes. After I installed the heim joints I was surprised at how easy it was to dump. The trailer pivots on the tires so you are only lifting a small portion of the load. The portion behind the axle acts as a counter weight for most of weight...

I had thought about it years ago but I found that if the trailer is evenly loaded it is quite well balanced and dumps very easily. I use a 6 foot digging bar for leverage. I run it through one of the front shackles and put the tip between the spring and the front hanger by the pivot point...

After 14 or so years the arms on the cast spring hangers finally cracked The repair involved cutting off the broken stubs Plates were fabricated to mount the heim joints to the frame The repaired trailer back in action