Originally Posted by chief02
The difference between a truck frame and a rv trailer frame is that a truck has wheels and tires on all four corners providing support. Think about all of the stress on a rv trailer frame with the majority of the load carried in the center. Heavy full time constructed 5ers are better served with a strong fully boxed frame imo.
My last unit had a fully boxed frame like the mobile homes. It was only 33ft long compared to 70ft long mobile homes.
I know because I repaired the broken frame using a section from a demolished mobile home made by the same Canadian company. And it was advertised as the real advantage over other frame type.
My boxed frame unit was flexing so much that the slide could not be opened unless the front landings legs were down. There was a note advising it by the hydraulic slide switch. The roof had to be sealed constantly due to frame flexing happening while traveling the rough Canadian roads.
All I know is that if I Jack one corner of my present I-beamed unit the whole unit follows with no frame twisting. I can open any one slide fully anytime while the trailer is on the truck and no frame twisting is happening.
I traded for this unit because it was solid and I can attach all my stuff to the frame properly
Any hole in the tubed unit really weakened the frame and caused failure that I needed to reinforce at different times during my 15 years of ownership. Most failures were results of original fabrication procedures and some other units were recalled, but not mine.
BTW the previous trailer was to be of much higher quality and value then the present unit. And no way I could afford to buy one more new one, compared to present I-beamed unit we bought new 4 years ago. This unit to me is miles ahead in strength and quality compared to many other units I looked at and still not overweight for our present TV.