Wow, you did?!?! What happened? What were the circumstances? Had the tongue been damaged there at some point before? Did it bottom-out on a rock or something to cause it to break?
Hey Geoff, I was on a long-weekend camping trip through the Ochoco National Forest the June, (still need to do a write up on it!)
Almost all of our time in the Ochoco was off-pavement, including some pretty rough roads, but our speeds were pretty low, and the trailer wasn't, (at least I think,) overloaded.
Here is the gps track of Saturday, 6/17:
https://maps.google.com/maps/ms?msi...0&ll=44.383993,-119.737501&spn=0.04208,0.1054
We were trying to make it up to Spanish Peak, but hit snow before we could get to the top:
We stopped for lunch, then headed back down. About half-way down, we suddenly heard a scraping noise behind us, like we were dragging something through the gravel. As it turns out, we were:
Luckily, one of the guys on the trip had a small floor jack, so we were able to jack the tube back into position, well, almost anyway.
We used the trailer's wing support braces to make a splint for the break:
The following day, we headed home, roughly 40-ish miles of gravel, and about 200 or so back to PDX, (with a side trip to the
Painted Hills!)
I finally got around to repairing it last week, (since we have another trip slated for next week.)
Old tube and new tube, pre-paint:
Original wall thickness was .095". New tube is .188":
And all painted up:
It's all back together now. I had the tent out of it this weekend and used the trailer to haul a dining room set to my Mom's house! I probably could have patched the original tube, or added some kind of plate to the top to spread the load out a pit. GVW on that trailer is 2K. I estimate I was at about 1300-1400, (800 for the trailer, ~320 for fuel/water, 50 lbs of firewood, 50 lb cooler, propane tank, etc.) And that was when we left Thursday night. I'm glad I didn't have a heavy quad on it or something!
I think the failure mode was ultimately due to fatigue. After a hundred or so miles of rough roads w/a loaded trailer, the material simply couldn't handle it. I think if I stuck to the pavement, it wouldn't have been a problem, since both the frequency and the amplitude of road loads would be much, much lower. The 3/16" wall tube should eliminate that problem. I hope it doesn't chase it somewhere else!