Lippert frames
Been towing for 30 years, but never heard of a Lippert frame. Seems like most of the comments are negative. So, what is a Lippert frame?
Forum Discussion
Huntindog wrote:
I do not know what "rolled" means. I DO know what welded looks like. I have seen that on many TTs.
I DO NOT have a welded frame rail frame.
It is what I consider to be a "normal" I beam.
Ralph Cramden wrote:
Simply put there are two methods used to make a structural shape. Hot rolled or cold rolled. Specifically in relation to an H or I which are a complex shape, there are two ways to make them. Hot rolled is steel goes in one end of a plant, and an I or H comes out the other. Its then shipped to a fabricator who cuts it, drills it, fabricates it.
The other way to make an H or I, is you take 3 pieces of plate or sheet, and weld them together. That's it, two options. You can cold roll a C, or an angle, or a Z or a bar, and a lot of other shapes, but you can not cold roll an H or I. Those are the simple versions. This Article explains it better than I can.
That's why I think your main rail is an engineered / fabricated / machine welded shape. That is unless Lippert is having hot rolled shapes custom made at great expense, or own a hot mill and making their own. Not sure why they would want to. The size is not available unless its fabricated. Maybe I'm wrong.
I doubt you are wrong - sounds like an entirely reasonable explanation to me as it's clear you know far more about this subject than any of us! Thanks for the detail - doesn't change the fact that the frame on my own Coachmen has failed but at least I have some better understanding why it failed.
