Wire Rope - SailNet Community
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post #1 of 10 Old 1 Day Ago Thread Starter
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Wire Rope

I have a friend who just purchased some 7/7 wire rope vinyl coated from Home Depot.

The idea was to use it for a topping lift for the dutchman system.

I was good to go when I noticed that the old wire was somewhat magnetic and the new wire was even more magnetic.

I also noticed he bought aluminum ferrules when I believe you are supposed to use zinc-coated copper.

I'm pretty sure I'm going to get him to get the proper ferrules but I'm not sure about the wire.

What do you think?

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Re: Wire Rope

I think some people just need to learn the hard way that not all "marine" equipment is expensive for no good reason and easily replaced with cheap hardware store alternatives. Perhaps this is your friend's opportunity to learn that lesson.

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Re: Wire Rope

I've never seen wire used as a topping lift for Dutchman, it must not be the adjustable version ?

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Re: Wire Rope

Hard to say how long that will last, but the vinyl coating will assure that failure will be a surprise.
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Re: Wire Rope

I was actually one of the first users of the Dutchman.... I even tested it for them for offshore.

I have always uses a 5/16" or even 3/8" line to attach the Dutchman fittings... the line has an eye splice at each end one connects to the topping lift and the other to the end of the boom (where the topping lift normally attaches))

My sail cover has slits w/ zippers where the lines are.

I have no complaints with the system except the cost and the need to modify the sail with installed grommets.

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Re: Wire Rope

Wire topping lifts beat the crap out of the leech of the sail. Use rope and your main will last longer and require less restitching. All wire is not stainless, be sure it's not cheap because it's not SS.
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Re: Wire Rope

These days there is absolutely no good reason to use wire rope for anything other than standing rigging. Certainly not low grade hardware store wire. It will corrode very quickly, and likely start leaving rust stains on the sail. The vinyl coating will also break down in the elements and start to look tatty very quickly.

Why exactly does he want wire for a dutchman??

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Re: Wire Rope

the original dutchman has wire rope pendent that the topping lift clamps attach to. home depot wire is 304 with a cheap clear coating that will turn dark in time from the UV. the wire will last a long time and if it did break after 20 years he will have gotten his moneys worth. will it work sure. there are now better materials that will do the same job but will require a bit of redesign. I rebuilt one using dyneema and splicing the lines together instead of the clamps. much cleaner and less wear on the sail
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Re: Wire Rope

Quote:
Originally Posted by overbored View Post
the original dutchman has wire rope pendent that the topping lift clamps attach to. home depot wire is 304 with a cheap clear coating that will turn dark in time from the UV. the wire will last a long time and if it did break after 20 years he will have gotten his moneys worth. will it work sure. there are now better materials that will do the same job but will require a bit of redesign. I rebuilt one using dyneema and splicing the lines together instead of the clamps. much cleaner and less wear on the sail
Did you use the standard dutchman clamps on the dyneema?

I heard that it is hard to get them not to slip on the slippery stuff.

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It is a lesson about the limitations of wax as an adhesive.
If you have an engineering problem solve it.
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Re: Wire Rope

Quote:
Originally Posted by davidpm View Post
Did you use the standard dutchman clamps on the dyneema?

I heard that it is hard to get them not to slip on the slippery stuff.
no, we did a bury splice instead of the clamps and then stitched the vertical lines so it would not pull out the vertical lines are also dyneema but a very small size like 1/16" the topping lift pendent was about 3/16" gray Amsteel good for about 1500lbs

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