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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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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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