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it was Capt Mooron who said that
| cranes never had their booms & rams set up in similar geometry to solid | vangs, and was Scotty who proved they do in fact. Capt. Mooron wrote: **** You Doug.... A little touchy, are we? ... where did he prove that? :Scott Vernon :alt.sailing.asa :8/28/2004 11:10 AM "Capt. Mooron" wrote Quit toying with the damn boom.... look think of it this way... how many lifting devices utilize a support located under the boom at less than 25% of the boom length? NONE! Wrong, kanook. Have you never seen an engine crane? A bascule type draw bridge? Any hydraulic crane with the boom out? An excavator? need more? Scotty I always said the topping lift was better situated to lift a load. And that's wrong. It's not a case for *always*. Did you ever realize that the tension on the topping lift was greater than the weight, and the forces on the mast were also multiples of the weight load? I don't think you tried to understand what I was trying to explain. I am not a particularly good explainer, but your mind seems to be made up regardless of the above facts. DSK |
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