ISC anchor rings

[DemonHedgeMaster]

Sup guys, Have made myself a cambium saver from some bits and the large 25kN aluminium anchor ring has started to dimple on the inside, the smaller one has not.

 

I believe this is being caused by the rope as I've used it twice and two have appeared.

 

Ally is a weak metal and once fractured is critically weakened, it is probably alloyed with something more resistant but I'm pretty alarmed that it has deformed like this.

 

Does anyone one on here use these rings and if so, is this normal?

[WorcsWuss]

When you say dimpled do you mean you've worn a groove onto it where the rope runs through?

I have a multisaver with dmm rings on which has not suffered like this so can't really comment, have isc ring on new strop but only to clip into. What rope are you on? It's not dirty and gritty is it?

[DemonHedgeMaster]

it is an old rope, well washed but still with lingering dark bits.

 

I did consider abrasion from the rope but the anodised layer has not been worn through, nor does the smaller of the rings show any sign of wear

 

Are your dmm rings steel or aluminium?

[tuttle]

Aluminum can be weakened and corroded by lots of chemicals.

 

Trees contain various elements.

 

Depending on how kit is used, stored or cleaned, these things can effect the alloy.

 

we know some chemicals that completely dissolve alloy if submerged.

[DemonHedgeMaster]

its a pretty new bit of kit, used twice so far, the damage is also localised and consistent with abrasive or loading forces

[WeeDee]

Photo?

[Tommy_B]

Pictures please

[WorcsWuss]

it is an old rope, well washed but still with lingering dark bits.

 

I did consider abrasion from the rope but the anodised layer has not been worn through, nor does the smaller of the rings show any sign of wear

 

Are your dmm rings steel or aluminium?

 

DMM rings are ally, the green Treemagineers / Teufelberger ones...

Could be a manufacturing defect, might be worth contacting ISC and giving them the batch number (just been recording all my serial numbers and they were conspicuously absent from the ISC rings I noticed...) and seeing what they say....doesn't sound right for sure....

[DemonHedgeMaster]

Photo?

 

it doesnt really show up on the camera, I did think about it!

 

Cheers WorcsWuss, I think Im going to circumvent any doubt or hazard and just replace the mofo