PILOON
Super Star Member
Myself, I would shy away from a tube frame and get a channel iron frame instead. The reason being that tube frames hold condensation and rot out. That is what I have learned in my years in the frozen north.
Have noticed that as well and whenever I build something with tube frame I plug the ends and pour some oil in the tubing.
Have even simply made tapered wood plugs and hammered them in place.
Even humid air will corrode tubing.
Early light aircraft had tubing frames and they generally ran hot raw linseed oil thru the tubed before sealing them.
Linseed oil bonds with rust and seals it off.
Also have brushed linseed oil under fenders as a rust prevention.
Raw oil wont skin up nor retain water.