Personally, I use 1/2 or 5/16 braided marine line (rope on land) used on
sailboats for hoisting and trimming sails. From my boating experience I
know it'll take a lot of load. A little expensive, but lasts a long
time and real secure, with little stretch. Look at boating/marine
stores or West Marine on the web. Phil KB9CRY
Herbert Sweet wrote:
>Our club (Poughkeepsie ARC) needs to replace its aging rope that is used for
>guying and pulling up
>towers. We put up three 40 ft Rohn towers, each with its own beam. The beams
>are 3 element 20
>meters, 3 element 15 meters, and 5 element 10 meters.
>
>Some time ago I calculated the maximum stress on the pull up rope, probably at
>about a 20 degree
>angle, as being in the neighborhood of 350 pounds. We use a battery powered
>windless to do the
>lifting.
>
>We have been looking at the black dacron that is supplied by several of the
>ham supplies companies.
>It comes in 3/16 770 lb breaking strength, 5/16 1250 lbs, and 7/17 2150 lbs.
>Are any of these
>suitable? If not, what would you recommend?
>
>
>
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