JRscooby wrote:
What is wrong with that simple view point? Doesn’t need a discussion of gravity.
There is nothgin wrong per se with the simple few: the rear overhang when on wheels is bending the frame down under its weight/mass (gravity does it, and in addition, acceleration (from bumps) does it too.
Bend lifting up, it is bending the frame up by (simplified) the same amount.
Regarding uneven "twisting". If you drive through a pothole with one side of camper only, the same 'twisting' of the frame will occurs as if you lift on one corner only.
How much (in accurate terms and amounts) bending down (gravity, acceleration from bumps) and up (lifting, bumps) takes place is difficult to calculate (too many unknown variables).
Fact is: our trailers bend A LOT already (mostly down)
