What's the weight on that compared to an 8 mm steel screw link (which is 85 grams)? Also, the screw links are mostly stainless. I trust steel more here because it is more likely to bend before it breaks, has stronger threads, and doesn't fatigue towards failure over time. I've decided that this isn't a place where I should cut weight.
i don’t care about the weight I just didn’t want things rusting. If I could get a stainless one I’m all for that too.
Aluminum also, distorts, bends like steel.
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My petzl oval is stainless steel hasn't rusted in 2 seasons using it.
That is the threads getting boogered.....u ever been working on ur car and tightening a bolt into something aluminum and all the sudden u feel a shudder and the bolt spins way to easy and u get a bad feeling in ur stomach... Same thing... aluminum threads easy to strip vs steel or stainless....I have used both the Kong and Petzl aluminum Delta links. They eventually become very hard to screw and unscrew, so I assume they are bending. I’m either going to go to a steel oval or back to girth hitch figure 8.
Interesting, wonder if they were talking about the welds, or aluminum in general.Absolutely it does bend, but all the welders here keep telling me that aluminum is more likely to give way without as much warning while steel more reliably deforms. So, I'm believing them. I suppose the measure would be ductility (?). I guess I didn't express myself well, I know that aluminum does bend.
That is the threads getting boogered.....u ever been working on ur car and tightening a bolt into something aluminum and all the sudden u feel a shudder and the bolt spins way to easy and u get a bad feeling in ur stomach... Same thing... aluminum threads easy to strip vs steel or stainless....
Aluminum can and does bend... In the correct alloy. During forging a little pinch of magnesium here and dash of copper there u get a finished material that has certain qualities....then add different heat treatment u have lots of different types of aluminum. 6000 series more specifically 6061 is not intended to bend and that is why it will fail without much indication. U can get it into a state where it can be formed without having to worry about cracking as much but it involved heating to a specific temp and it isn't for beginnersAbsolutely it does bend, but all the welders here keep telling me that aluminum is more likely to give way without as much warning while steel more reliably deforms. So, I'm believing them. I suppose the measure would be ductility (?). I guess I didn't express myself well, I know that aluminum does bend.
Any thread of any material can gall....stainless is notorious for having threads seize.... Anti-seize should be used on stainless anytime u think u might want to unthread later. I have a steel triangle link on my rappel rope and first thing I did was apply anti-seizeI have had stainless threads royally screw me over on the electrical feed for an entire high school. Also those cheap stainless screw links booger up as well. Some grease might help out for longevity on these screw links.
Why are screwlock caribiners not susceptible to the galling threads?
I have used both the Kong and Petzl aluminum Delta links. They eventually become very hard to screw and unscrew, so I assume they are bending. I’m either going to go to a steel oval or back to girth hitch figure 8.
so you said oval. i know a lot of folks use delta links to prevent a scaffold knot from slipping over it, which i gotta say is pretty hard to imaging unless you take a real whipper, then that is probably the least of your worries. seems like an oval link would be fine too..
When loaded the scaffold is trying to pull the oval inside, but at the same time the same amount of force from the load is also pulling the oval in the opposite direction to not get sucked in, and the knot is tightening up all this time.Sorry, I wasn’t clear on that. I meant if I go to a steel oval, I wouldn’t attach via scaffold knot, but rather by a figure 8 on a bight.