Mike , we best ask Bonnie , as she owns the original now and had to deal with removing foam cabin from floor ( just glue and foam ....and fabric as usual + reinforcing strips) . At that size and with the angled roof creating strength , there was No framing anywhere except around door and window .. It’s one of our oldest Foamies (here) ... now refurbished with new added on Galley ...
Can’t wait for Bonnie to finish ...
For
the little ones , we still see little need for support framing when using 2” thick foam ... except doors ... It’s plenty strong just Foam and canvas, and now we’re waiting to do our inside on the new trailer ( planning) with chipboard like on the FoamStream ...that worked out well, was much easier to glue up than canvas, and even with the thicker chipboard , It’s easily waterproofed ... unlike it's laminated cousin ( Mr. plywood)
One of the curiosities of Foamies is the low mass ... The light structure doesn’t develop the
momentum of the heavier cabins , so they really don’t flex much from bumps and shakes ...although being more flexible ( without damage) than the traditional materials ...
Watching an old episode of “ Top Gear “ on TV , we saw a wooden TD shake itself apart on a bumpy mountain road , the cabin flexing , the door opened up and swung out, that additional leverage tore that side wall off and the whole thing collapsed from there... all in a few seconds...
We accidentally ran the one wheel of the FS over a prominent concrete curb and it jumped sideways into the air , then came down and landed and didn’t even bounce ... ( low mass , low inertia) ... seems a little extra weight makes a Big difference ..
