afidel wrote:
Fisherman wrote:
Possibly a broken spring on the trailer.
That's my vote, or spring perch. I'd investigate everything in the running gear including running each wheel up a ramp to see how the suspension and equalizer reacts.
This is exactly how my trailer was acting when some welds on the insufficient side to side braces between the frame broke. It was so unstable from side to side it was scary to pull and I could see the axles moving from side to side when turning corners on the highway.
I had a great fabricator install 3 - 6"x4" structural steel tubes welded between all 3 sets of spring perches and he reinforced them with 2" square steel tubes up to the frame in 6 spots complete with large square pads welded to the frame. He did a great job, and cinched the trailer corner to corner with come alongs to ensure that it was perfectly square before starting. The trailer is super stable now and tows better than it did when I bought it.
OP, check your spring perches, frame, and springs, etc. I would bet that something is broken and causing this issue. Please let us know what you find.