jjrbus wrote:
Thanks for the responses.
Adding stringers is a good idea, there is almost no framing in that area except along the edge.
I need to also keep in mind what is available locally. From what I am reading 3003 may be a good option? It is med strength and is cold workable. I'm thinking around .032
I probably use prefineshed white so I can paint it at some point.
Recently came across 2024 T3 .032 which appears to be what Air Stream trailers use, so need to look into that. I should start this in the next month or so.
These alloys also come dead soft with a SO designation. I would use what ever is available and is affordable, the softer the temper the thicker you should go. Airstream makes their Al trailers similar to Al airframes.