Originally Posted by dbj216
Hi Greg, thanks for the good info. It appears the axle breaks in this thread are the torsion shaft itself, maybe due to fatigue. Do the 3" tube axles have a larger square torsion shaft?
Anything steel, can break for many different reasons.
In the case of torsion axles, a mild steel shaft can break much easier than a tempered shaft.
Processing tempered steel can, but not often, have long term issues, such a fatigue crack, but very rare.
I think the cracking issue, is cause by parking the trailer in a turn, which puts tremendous pressure on the wheels, as well as the shaft, and perhaps leaving it that way for an entended period of time.