Insulating rigging rings

Nish

Nish

Branched out member
Location
North Carolina
I'm soliciting ideas for coating the rigging rings' outer groove with an insulating material. The attached photo illustrates the concept, but there the silicon squeezed out a bit and tore under load. Any other ideas for what might providing a smooth, durable, insulating coat? JB Weld maybe? Bondo?

(I'm trying to use Amsteel/Dyneema with the rings, which has a really low melting point.)
 

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Possibly one of the ceramic exhaust coatings, however that may have chafing issues if it cracks. Leather maybe, soak it and clamp it it the ring. Once dry it should stay there once the ring is spliced into the saver. Also with that in mind, good canvas might also be usable.
 
you are attempting to marry two creatures with discordant values and beliefs. An eventual separation appears likely, and the divorce could be messy.
eye-splicing StableBraid to a ring is not difficult, and is soul satisfying.
 
You're actually heating the rings up to over 150 degrees C with the rigging rope, and the rings aren't able to dissipate the heat quickly enough to keep Dyneema from melting?
Wow.
 
JeffGu said:
You're actually heating the rings up to over 150 degrees C with the rigging rope, and the rings aren't able to dissipate the heat quickly enough to keep Dyneema from melting?
Wow.
Click to expand...

If the rings are highly effective at dissipating heat, then, for the same reason, I'd expect them to be highly effective at transferring heat to that surface in contact with the Dyneema sling. So if friction can heat the rings to over 150 deg. C, then I'd expect that heat to quickly touch the sling.

I've not used Dyneema on the rings without insulation. Would it be a surprise if rigging friction through the rings could heat them up to over 150 deg.C?
 
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something ive noticed in my experience with the rings is its not always the weight that is a huge factor in the rings heating up, its the speed of the rope running thru the rings and the distance it runs. i just wouldnt bother in the dyneema if your working off tall trees with long running distances. just my opinion, not sure if that does anything for you. sorry if its useless babble
 
I wonder now much insulation you're going to gain from any sort of additional layering.

Aluminum is great at heat transfer/absorption.

Have you found that the rope fibers are melting from use? If so, it seems to me you should consider changing procedures. You're out-working the rings ability to dissipate heat. Your approach, insulation, seems like a patchwork solution.

Might be better to:

-take smaller pieces
-lower them slower so there is less friction
-go to the larger/more ring setups
-go retro and use a rigging block.
 
Tom Dunlap said:
I wonder now much insulation you're going to gain from any sort of additional layering
Click to expand...

It all depends on the insulator. I never tried it, but I'm sure I could've heated the aluminum ring to Dyneema's melting point and still comfortably held it with my bare fingers on the layer of silicon. Silicon oven mits are regularly used to handle much hotter iron.
 
Nish said:
Would it be a surprise...
Click to expand...

It wouldn't surprise me if it could... it just surprises me that it would. I've never got one so hot that I couldn't touch it. About piss warm is all.
I don't drop big wood long distances at high speed, though. I think I'd put a piece of vinyl electrical tape under the sling and see if that melts. If it doesn't melt that, it's not going to melt the Dyneema sling. I use AmSteel Blue and Icetail to make slings, including ones with stainless steel or galvanized eye thimbles in them (see pic) and I've actually run the rigging rope through one of them, like you would the rings, with no ill effects to the sling. And steel will hold the heat, and dissipate it slower than aluminum. I guess I'm just not seeing how you heat one up enough to do that, in a single drop. Everything would be cooled back down before you could setup for another drop.

Am I missing something you're doing with these?

Samson-Icetail-Sling.webp
 
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JeffGu said:
I think I'd put a piece of vinyl electrical tape under the sling and see if that melts.
Click to expand...

That's a good idea.

I don't know that any of my rigging applications threaten to bring the rings close to 150deg.C. But I also don't know that none of them pose this threat. A small piece of aluminum would heat up fast and lose that heat quickly.

Just saw your follow-up RajElectric. Good to know.
 
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Hey, a temperature gun would be great for seeing what kind of temps the rings are running at... I have one of those. Stuck on a non-tree related job right now, but I'll see if I can set up a test when I get done with this job.
 
I got a temp gun myself also Jeff. I have shot my rings, porties, figure 8's and just about everything else I can think of. I have never gotten my rings above 100C, but I also don't rig big stuff from a hundred feet up.
 
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