Tubing size for cantilevered aluminum beam
I can find equations and calculators to solve this problem, but I don't know some of the values. I'm hoping you folks can give an assist....
I am a full-time liveaboard sailor, outfitting a 42' sailboat to return to the Caribbean. I have an aluminum stern arch and want to add dinghy davits reaching aft to hoist the dink under the arch/davits. Assuming 6061 T6 alloy in .125 wall thickness, what size AL square tube will support a 200 lb end-point load (at 42") without significant deflection?
Thanks for all comments, suggestions, etc.
JD