Cable hardware question

[chiselbit]

Ouch

 

[southsoundtree]

Beware the Wedge Grips. If you start actually reading the reviews online you will find that there is a significant number of them that gets manufactured poorly and fail in lighter wind loads. The inside part will just shear. My company switched to them because they are much easier and we ended up having a bad batch and had to go around to 20+ customers to recable free of charge due to 3-5 of them failing in one year. Big loss.

How old of a batch? Are they all the same batch? Is it all WGs?

 

[evo]

Haven’t read all the comments yet. Crosby makes a couple of different sizes of very beefy rings. I’d avoid using rigguy or the other type in a configuration like this unless you do the box x version for a three part system.
The logic is a hub and spoke still allows a lot of movement with restriction only outward. This is likely to wallow out the holes unless fixed hardware is used.

Crosby Rigging Ring - 1 1/8" x 6"

DetailsHigh-quality, forged carbon steel rings from Crosby. We use these in our crane slings.Specifications1 1/8" stock6" center holeSingle Pull WLL: 10,400 lbWeight: 6.6 lb

www.wesspur.com

I think I bought the last of them from the clearance section, the link is the bigger ones.

A moused shackle would also work but I’d have the two legs fairly long to avoid a wider angle. Probably 60 degrees?

Could also do a hybrid, dynamic triangle with a steel Y the dynamic can be slightly slack and higher than the steel

 

[Maplegeddon213]

How old of a batch? Are they all the same batch? Is it all WGs?

We bought them and installed them within a year of getting them, 2 years ago. I'm not sure if they were all the same batch, but there are lots of similar testimonies in the reviews online so it seems to have been many batches. We tried to reach out to the company but they never got back to us, is my recollection.

 

[chiselbit]

Haven’t read all the comments yet. Crosby makes a couple of different sizes of very beefy rings. I’d avoid using rigguy or the other type in a configuration like this unless you do the box x version for a three part system.
The logic is a hub and spoke still allows a lot of movement with restriction only outward. This is likely to wallow out the holes unless fixed hardware is used.

Crosby Rigging Ring - 1 1/8" x 6"

DetailsHigh-quality, forged carbon steel rings from Crosby. We use these in our crane slings.Specifications1 1/8" stock6" center holeSingle Pull WLL: 10,400 lbWeight: 6.6 lb

www.wesspur.com

I think I bought the last of them from the clearance section, the link is the bigger ones.

A moused shackle would also work but I’d have the two legs fairly long to avoid a wider angle. Probably 60 degrees?

Could also do a hybrid, dynamic triangle with a steel Y the dynamic can be slightly slack and higher than the steel

I glad you said that, I was thinking about a shackle, I don’t see any reason it wouldn’t work but wasn’t sure if that was kosher. Wouldn’t want the other arborists laughing at me later, ha.
There’s not much spread between cables, maybe 10*-15* and not much weight involved either. Biggest stem is probably no more than 5 hundred pounds in full leaf. Others are significantly smaller.
Biggest might even be less than that, I need to go back and look.

 

[Matias]

I glad you said that, I was thinking about a shackle, I don’t see any reason it wouldn’t work but wasn’t sure if that was kosher. Wouldn’t want the other arborists laughing at me later, ha.
There’s not much spread between cables, maybe 10*-15* and not much weight involved either. Biggest stem is probably no more than 5 hundred pounds in full leaf. Others are significantly smaller.
Biggest might even be less than that, I need to go back and look.

With those angles, I think a beefy shackle could be pretty legit. Maybe a little welding to lock it shut

 

[ATH]

Beware the Wedge Grips. If you start actually reading the reviews online you will find that there is a significant number of them that gets manufactured poorly and fail in lighter wind loads. The inside part will just shear. My company switched to them because they are much easier and we ended up having a bad batch and had to go around to 20+ customers to recable free of charge due to 3-5 of them failing in one year. Big loss.

How did you determine it was a "bad batch"? Just clarifying: did you replace all the wedge grips you had ever done?

Any pics of what they look like when they failed?

Did you install them or others on your crew? (IOW, How confident are you that they were installed correctly)?

I'm not doubting your experience... Just looking for details. I have seen relatively few negative comments. You can find bed reviews about anything online. I know there are major utility contractors using them as well who would not be doing so if they had an unacceptable failure rate.

Mostly, I guess, if there is a bad batch, I'm wondering how to avoid those. Is there something to inspect on the device or was it a manufacturing date?

Thanks

 

[evo]

I glad you said that, I was thinking about a shackle, I don’t see any reason it wouldn’t work but wasn’t sure if that was kosher. Wouldn’t want the other arborists laughing at me later, ha.
There’s not much spread between cables, maybe 10*-15* and not much weight involved either. Biggest stem is probably no more than 5 hundred pounds in full leaf. Others are significantly smaller.
Biggest might even be less than that, I need to go back and look.

Technically I don’t think you should have opposing loads on the bow of a shackle. Yet we probably all have done it and as long as the angle is kept in check should be fine. I’d make damn sure couldn’t spin, wiring the single leg in place to the pin if the thimble can pass the shoulder.

 

[Matias]

>15⁰ isn't asking toooooo much of it I think.

 

[evo]

>15⁰ isn't asking toooooo much of it I think.

45 would even be alright

 

[Brocky]

Another ring option

https://hownot2.com/products/leash-ring?pr_prod_strat=jac&pr_rec_id=3fdc28a56&pr_rec_pid=8850950521147&pr_ref_pid=9632758464827&pr_seq=uniform

 

[chiselbit]

Another ring option

https://hownot2.com/products/leash-ring?pr_prod_strat=jac&pr_rec_id=3fdc28a56&pr_rec_pid=8850950521147&pr_ref_pid=9632758464827&pr_seq=uniform

What an interesting website. Didn’t know about it. Thanks

 

[Matias]

What an interesting website. Didn’t know about it. Thanks

What a great day for you! They run the best sales at the end of the year, and they have never given a second though to ordering me tree gear from brands they carry, and still honoring the discount. That's how I got 25% off on my Kinisi

 

[colb]

Lest forgotten:

Endz

 

[ATH]

Lest forgotten:

Endz

Nice...I've never seen those before.

 

[Basswood]

I’d go direct if possible with the unions on that tree. Way less components to potentially fail.

 

[evo]

Saw an interesting one today. Installed through bolt eyes with taught dynamic spliced to a central ring. Everything was taught and it looked like they might have used the eyebolts to tension the dynamic cable.
Presumably this was done for the added benefit of cushion of the dynamic, but it appeared that the dynamic was low stretch.
3 legs and one 3/8ths -1/2” ring so not sure if the if it was over thought due to the load sharing. Pretty icky looking large diameter corkscrew willow with plenty of decay and large tear outs.

 

[chiselbit]

Lest forgotten:

Endz

Those look great. Wonder why the big shops don’t sell them?

 

[southsoundtree]

Look like a variation on Rigguys.

 

[Matias]

I think it's readily apparent how Rigguys stay together, but the Endz seem to be held together by friction alone, which I don't understand. What happens when things get shaken around in the wind? If the two stems don't maintain enough pull on eachother at every moment, I could see that little pin shaking out.