Poison Ivy Splice

oceans · Mar 19, 2016

chizmin said:
Just finished the other eye and both whiplocks. I paid attention more to the eye as i ran it home and noticed that I ended up about 1.5-2 strands short of my mark. I tugged and massaged and whacked and hung from it and did everything I could but I couldn't get it to bury any further. I believe it may have something to do with a little bit of bunching I got on the eye that I didn't take care of soon enough.

I am going to be sending it in to get broken on Monday so i will post an update but just wanted to say thanks again to everyone who replied and posted and helped me. This whole splicing thing fascinates me and also is kind of a calming activity (except for the 5 blood blisters on my hands, and the swearing and throwing of things).

How long is that line between the two splices? Short like a lanyard, or long like a main system?

Arborist1 · Mar 19, 2016

oceans said:
How long is that line between the two splices? Short like a lanyard, or long like a main system?

It's only like 5 feet because when I emailed treestuff they said it had to be under 6' eye2eye in order to break it on their machine. I still have over 100' of that PI left which I plan to put an eye on using the same formula I did for the other two (assuming everything goes well at treestuff) I attached a picture that shows the length

oceans · Mar 19, 2016

chizmin said:
It's only like 5 feet because when I emailed treestuff they said it had to be under 6' eye2eye in order to break it on their machine. I still have over 100' of that PI left which I plan to put an eye on using the same formula I did for the other two (assuming everything goes well at treestuff) I attached a picture that shows the length

Cool, so you may be able to get some additional slack in the cover by milking from the first splice towards the second. If the entire jacket is toight like a toiger then probably not.

You might not really see any appreciable difference from one splice to the other as far as breaking strength with slightly different bury lengths. I feel the bury length has a bit to do with the security of the splice when unloaded.

The most important component of a strong splice is even balance between cover and core. This means all fibers will distribute the load rather than more core, resulting from a baggy cover in the eye, or too much cover slack remaining in the body of the rope, for instance.

You'll more than likely be able to put 2 splices in the remaining 100' due to more slack being available in all that cover to fully bury the second eye.

Only the test will tell where it breaks...best of luck!

Arborist1 · Mar 19, 2016

oceans said:
Cool, so you may be able to get some additional slack in the cover by milking from the first splice towards the second. If the entire jacket is toight like a toiger then probably not.

You might not really see any appreciable difference from one splice to the other as far as breaking strength with slightly different bury lengths. I feel the bury length has a bit to do with the security of the splice when unloaded.

The most important component of a strong splice is even balance between cover and core. This means all fibers will distribute the load rather than more core, resulting from a baggy cover in the eye, or too much cover slack remaining in the body of the rope, for instance.

You'll more than likely be able to put 2 splices in the remaining 100' due to more slack being available in all that cover to fully bury the second eye.

Only the test will tell where it breaks...best of luck!

That is what worries me about the second splice I did. I can feel the "baggy cover" in the eye. By the time I noticed it I couldn't pull the splice apart no matter what I tried to try the bury again.

oceans · Mar 19, 2016

Yup. So, if you shock load that eye, you may be able to get a bit more balance, but PI is real tight. That baggy eye will more than likely be the one to fail.

I think one of the real tricks to really nail in 24s DB splices is the crossover. I like them to be super tight, with the crossover forming a seemingly perpendicular angle across the line. If you can achieve that, and not lose core tension over the cover taper, they run home the best. The other important trick is maintaining that core tension as it wants to rotate around your hand during the final bury.

Dave Rohach · Mar 19, 2016

Hopefully Nick, Josh, Eric, or Luke can take & post a pic of the actual break. That would be very cool to see where the weakest spot actually turns out to be. Maybe a phone call before your package arrives would give them a heads up?

Arborist1 · Mar 25, 2016

Got the results back today!!!

oceans · Mar 25, 2016

chizmin said:
Got the results back today!!!

Very cool! It looks like it settled 3 fairly distinct times before breaking. First at 2,500, again at 4,000, and finally around 8,750 before going bust. Nice work there.

Arborist1 · Mar 25, 2016

oceans said:
Very cool! It looks like it settled 3 fairly distinct times before breaking. First at 2,500, again at 4,000, and finally around 8,750 before going bust. Nice work there.

Yea it didn't come with any explanation so i was wondering what those dips in the graph meant? Is that normal?

oldoakman · Mar 25, 2016

Like I said, way too pretty of a splice to just break!

Dave Rohach · Mar 25, 2016

Outstanding Chizman! You are definitely on the right path to relying on your abilities as a "Splicer", Great Results. Now, do it again and start climbing with confidence! Be Safe!

oceans · Mar 26, 2016

chizmin said:
Yea it didn't come with any explanation so i was wondering what those dips in the graph meant? Is that normal?

It's probably fairly normal for most splices. There's a lot of heat created when the fibers go into tension. When they suddenly slip, there's even more. With Class 1 synthetic fibers, that heat is what really breaks down their strength.

Without a photo, it would be difficult to tell what settled in relation to the different plateaus on the graph. I can only guess that the last plateau is where the point of failure occurred.

NickfromWI · Mar 28, 2016

You suck if this was your first splice and it broke at almost 10,000 pounds. So many people have to practice a bunch of times before they see those numbers. Nice work man!

love
nick

Arborist1 · Mar 28, 2016

NickfromWI said:
You suck if this was your first splice and it broke at almost 10,000 pounds. So many people have to practice a bunch of times before they see those numbers. Nice work man!

love
nick

Thank you

I was following your tutorial Though so give yourself a few pats on the back

TimBr · Mar 30, 2016

chizmin said:
Thank you

I was following your tutorial Though so give yourself a few pats on the back

Probably really obvious, but you wouldn't by any chance be able to provide a link to Nick's tutorial, would you? Sorry if I tripped over it.

Tim

Arborist1 · Mar 30, 2016

TimBr said:
Probably really obvious, but you wouldn't by any chance be able to provide a link to Nick's tutorial, would you? Sorry if I tripped over it.

Tim

Here you go, I couldn't find the second part, i think it's going on 5 years in the making. But there are other videos that show the final bury that I'm sure you already know about

Arborist1 · Mar 30, 2016

Also I got a picture of the break from treestuff today

TimBr · Mar 30, 2016

chizmin said:
Here you go, I couldn't find the second part, i think it's going on 5 years in the making. But there are other videos that show the final bury that I'm sure you already know about

Thanks for the link. I really appreciate you going to the trouble. Also, that break test photo looks like things went absolutely perfectly; it looks like it almost broke dead center, with no hint of any failure of either of the spliced eyes. Nicely done!

Tim