Whoever said you can't support the camper by the frame?

I wouldn't do exactly like those pics show in California long term. I wouldn't worry about it while camping for a couple weeks. That would be worth the risk. Yes, out here we think about things like earth shaking.

That's how our 40' TT is setup at our seasonal site, sort of. We have a tower of cinder blocks just in front of the axles and another just behind the axles. Then another tower between the axles and the front/rear of the trailer. Then the stabilizers at the ends. So 4 sets of supports on each side, plus the stabilizers.

-Michael

I have seen hundreds if not thousands of trailers like this. It is pretty normal where we camp most of the time.

Looks like the pictures are from Lake Rudolph campground. Those trailers have been that way for years so I would say its pretty stable.

I had a camper trailer with a false frame. The false frame was a perimeter of flimsy steel "framing" that was intended just to attach the walls to, it was not part of the chassis, though it was welded to and appeared as the frame. In that case you would not want to jack or support the trailer under these "frame" members. That is the only thing I would think a person could possibly mean by incorrectly stating to not support a frame, and he would not know the frame from the wall support either

What they mean when they say “never support a trailer by the frame” is not to use the stabilizing jacks to lift the trailer. The trailer in the pics is supported just in front of the axle, then out at the ends like the stabilizing jacks would do.

As long as they're concrete building blocks and not just "cinderblocks".

The trailer has 6 supports. Looks pretty evenly divided.

Always place the jacks under the spring supports not the axel..

Guess How I learned that the hard way.

It depends on where you place the supports on the frame. If the supports are placed at the extreme front and rear of the trailer frame, the span BETWEEN the supports can overload the trailer frame causing excessive deflection. In this case, the supports look OK. It is a loooonnnnng trailer though, it might get a little spongy.

In trailers, the axle(s) are placed in the frame to balance the frame loads and still provide sufficient tongue weight at the hitch. When sitting only on the wheels/axles, the trailer loads CANTILEVER off the axles. When on supports only, the load spans BETWEEN the supports. It's not the same structurally.

Chum lee

edit: This trailer appears to be more for semi-permanent use (possibly a campground host or permanent resident) rather than an overnight affair. IMO, the site slopes fairly steeply for a campsite. Note that the tail of the trailer is almost 4 feet off the ground while the hitch end is grounded. There are no visible tie downs/chocks at the supports or anywhere else. Without knowing the location, in the event of an earthquake, tornado, high winds, flood, etc., IMO it would be very easy to knock this relatively light weight trailer off the supports and damage it or its contents. Just an observation.