Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

 
 
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SteveB
 
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Default engineering calculation needed

I got some 2" x 2" x .250" steel square receiver stock today. Sheesh. $4
per foot.

Anyway, I am making a figure 4 davit. The long leg will be 15 long. The
short horizontal will be 3 foot.

It will mount at the top and the bottom. I am considering putting in a
standoff about half way up to work against the flexing.

The winch weighs about 25#, and I intend to lift no more than 200# with this
800# capacity winch.

The horizontal will be one foot down from the top with a diagonal flatbar
going from the top out to the end of the horizontal to help transfer the
load to the top of the upright.

How much flex can I expect? Do I need the standoff in the middle? I will
probably put one on anyhow just to be sure.

Thanks in advance.

Steve


 
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