Class I splice for Class II rope

[dmonn]

Are there any stats available for strength of a Class I splice done using a braided polyester cover and braided dyneema core rope? I have a non-life support application for a Class II rope. The rope's strength is way beyond the forces it will be subjected to. This rope is being used for a super low stretch requirement rather than strength.

I haven't had much success using any of the Class II splices I've tried, but have my Class I down to the point I no longer need to look at "the book" while splicing. I've used a Class I splice on dyneema-cored rope by tweaking things to get a 1.5 fid core bury. It went together easily enough (no blisters on my hands), but don't want the splice to come apart. It's not life-support, but not something I want to fail during use. Has anyone done any break testing on Class II double braid using a Class I splice? (Knotting the rope is "knot" an option).

 

[chris_girard]

There are no specs on splicing for a situation such as you have described that I am aware of.

Your best bet is to contact Iron Street Splicing Company in Washington State (they are affiliated with WesSpur). They do a lot of custom splicing using ropes with a Class I and Class II combined properties. Their website is below:

www.ironstreetropesplicing.com

Please let me know what you find out.

 

[Brocky]

Wild Line Ropes mainly caters to saddle hunters and offer a couple spliced products that have the cover tail buried. I bought one of the hitch cords, it seems the cover is buried in the core about a half an inch from the throat, the core is then buried about a fid and a half, with a gradual taper, between the cover and core.
I got some of the cord also and could easily fit two diameters of core of a tuck-bury splice and the cover tail.

 

[Rope Surgeon]

What kind of problems are you having with the class II splice? And what brand of class II double braid do you have?

 

[Brocky]

From his past posts, I think he wants to bury the cover tail instead of attaching to the outside.

 

[dmonn]

From his past posts, I think he wants to bury the cover tail instead of attaching to the outside.

Correct.

 

[dmonn]

What kind of problems are you having with the class II splice? And what brand of class II double braid do you have?

Completing the bury and having it look decent are the main problems. I've been working with 3/8 inch EnduraBraid.

 

[dmonn]

I had Arbsession do a break test for me. The result was about 70 percent of the single strand ABS. I know one test doesn't mean much, but for the application I'm dealing with it's way above what I need. I was very pleased with the result. It's stronger than a knot.

 

[Rope Surgeon]

Ahh, that didn't work out for me with Amsteel II Plus. But I kind of like the lock seize.

Glad you got something worked out.

 

[Brocky]

Lock seize, is that the west coast term for a locked brummel?

If it has a cover, I‘ve been liking the tuck-bury over LBs.

 

[Rope Surgeon]

Lock seize is just tensioning the rope and throwing a bunch of stacked half hitches over the cover tail and throat of the splice. Finish a lot like a lock whip.

 

[MapleLeafRopes]

Just an FYI for next time, there is a D Splicer Class II double braid splice that buries the tail. Its a bit more time consuming but visually looks nicer than the Samson Style Class II double braid that ends with a whipped cover tail. Done correctly both should yield the same strength.

 

[Rope Surgeon]

That's the splice version I couldn't get to work with Amsteel II Plus, at least not the coated stuff. It might work with uncoated but the cover is just too tight with the coating.

 

[Rope Surgeon]

Also I make the lock seizes look really nice

 

[Brocky]

Hitch cords get as short of a whipping as possible to keep legs short. If the whipping gets too long I lightly melt it together before adding the frapping, blue should have been, it separates some.
The NER Tech cord is a naked eye splice, the eye cover is separate from the rest.

 

[Rope Surgeon]

Here's the seize on 5/8" Amsteel II Plus, just about to be finished.

 

[TheTreeMD]

I'd like to add to this and ask questions. You can find written directions for a few class 2 ropes that have written directions for a class 1 splice, notably armor prus. The problem we have isn't that it can't be done. I just spliced a set of eyes on this 10mm epicord... easy peasy. Teufleberger does not state what splice is to be used... in fact calling them receives a "whatever you can get to work." They will not put that in writing, btw, I asked. So... here's the conundrum... according to ANSI, a splice isn't allowed for life support if there isn't written directions for that rope. This can be a simple, "spliceable with such and such standard splice..." or detailed instructions for that given rope. So.... does anyone have a definitive bit of info? Or is it still just a grey area... where until something bad happens and someone sues it's all just conjecture? Pic for attention