which wire rope for hand press fittings / standing rig - SailNet Community
 
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post #1 of 7 Old 08-13-2006 Thread Starter
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which wire rope for hand press fittings / standing rig

Hello, I've always had 7x19 3/32 rigging on my albacore. I like doing my own nicro press so I can repair and adjust easily. The downside is the wire always frays around the thimble. Would 1x19 be better for this application?
Also considering going to 1/8 .. comments welcome.
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post #2 of 7 Old 08-14-2006
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The construction of wire rope is described as X by Y, where X is the number of wires in each strand, and Y is the number of strands in the rope. Three are commonly used in stainless steel standing rigging:

1 x 19 - size for size the strongest simple wire you can get, and by far the most common for standing rigging. It does not like being bent, so is not suitable for running rigging, nor for use with a thimble.

7 x 19 - less strong than 1 x 19, but much more flexible.

7 x 7 - middling in terms of strength and flexibility.

Last edited by GordMay; 08-14-2006 at 04:17 AM.
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post #3 of 7 Old 08-14-2006 Thread Starter
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Too stiff to go around a thimble - thats exactly what I wanted to know.
Can 7x7 work with a thimble?
Thanks.
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post #4 of 7 Old 08-14-2006
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Are you asking about standing or running rigging? 1 x 19 would be ideal for standing rigging on boat the size of an Albacore, even if you are putting it on a thimble.

Jeff
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post #5 of 7 Old 08-15-2006
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Heavens, I'd be very careful about using 1x19 with Nicropress. Getting that very stiff wire around a thimble will definately unlay it. You'll lose bearing surface and the whole thing will be a bit of a mess.

If you must use 1x19, either get it machine swaged or use StaLok or Hayn mechanical fittings, otherwise if the strength is there 7x7 or 7x19 can be Nicropressed, but be very careful about the strength.

Hugs,

SoK
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post #6 of 7 Old 08-15-2006
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General article on avoiding rig failure

http://www.oceanpix.co.uk/Yacht-main...g-failures.htm
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post #7 of 7 Old 08-16-2006
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You really should talk to a rigger. Oh wait, I am a rigger.
3/32" 1x19 is fine to use with nico-press fittings. Double sleeve them for safety and to cover the end which you will need to pull the wire around tight around the thimbles. If you want, use a thimble one size larger than the wire size. That makes it easier on the wire. But honestly 3/32" or even 1/8" won't be a problem. Your wire won't unlay unless it's defective.
Bottom line, 1x19 will make a much better standing rig than 7x7 or 7x19.
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