Not a fair test. Dyneema is a remarkable and revolutionary material that does not need a phony test to show its value. Wire rope clips reduce the breaking strength of wire rope to about 80 percent. If you divide 14,478 by 0.8 you get 18,097.5, which is very close to the breaking strength of the Dyneema in this test at 18,857 pounds. A fair test would be wire rope eye splice against Dyneema eye splice. If a wire rope company wanted to phony up a test so Dyneema looks weaker, it could tie knots for the eyes in the Dyneema, which would reduce the Dyneema rope's breaking strength dramatically. Don't get me wrong. Dyneema is amazing. It is already changing our world. It has its week points, but to my knowledge they are few. We all owe Dr. Albert Pennings and DSM a thank you for this amazing material.
@tyvek05 Watched it again to see if you are correct. You are not. The wire rope breaks right at the clip. As I say in my comment, Dyneema is remarkable material. I use it rather than wire rope. The "test" however is bogus because wire clips are known to weaken wire rope, which they did, based on where the wire rope broke (right at the clip furthest from the eye).
oh look... a random dude on the internet seem to think himself a greater expert then the ones who literally do these things for a living... Ohh great all knowing lord! Bless us with your oh so great all encompassing knowledge! there is always a few of your kind skulking about on the internet, waiting for the opportune moment to reveal yourself...
@@theldraspneumonoultramicro405 honestly their argument is legit. Steel rope should be swaged against a spliced Dyneema. But im just some asshole on the internet 🤷♂️
It will conduct electricity such as lightning if its wet. It will also conduct lightning even better if it has been wetted & dried with sea water on it. Stainless has a high impedance value. That means it is a resistor to electrical flow. Very rarely does lightning follow stainless rigging. But lightning will follow light gauge wiring such as for lights & copper cored cable such as some co-ax cables.
I like Dyneema and most everything about it. It looked like the steel rope broke right where it was pinched by the clamp. I suspect given the same loop as the other end, it may have tested stronger than it did. Not saying it would be stronger than the Dyneema though.
The reason this fabric's payload is stronger than steel is because the fibers within the material stretch longer, where as a metal is more of a brittle stretch. Think of a pen compared to a rubber band. One is more solid and can with stand heat, but breaks easier Where as the other is more flexible than solid and wont break as easily But when subjected to heat, it will break.
Cool test , just thinking about the testing though , If you were to load up the different cables to within 10 % of their rated breaking strain 20, or even 50 times , And measure to what degree they hold their load rating once stretched , that might give a better indication of how they last.
Better to compare apples to apples. Steel winch cable is not Stainless steel 316 cable as per rigging. Breaking strength is 19,335 for 5/16 and 26,675 for 1/2 " SS 1x19 cable.
@@RF-yh3qh Quite clear what the point is. In the video they compared Dynema to steel winch cable. Steel winch cable is not Stainless steel 316 cable as per rigging. It also appears that a long piece of Dynema was made into a length with 2 loops at the ends. Therefore the Dynema is doubled up and is actually 3/4 inch diameter in the middle not 3/8".
@@RF-yh3qh You think.... But you don't know for sure. Do you? If the test tension piece of Dynema was over spliced into its full length ie. That is doubled up over its total length. How would you know? Compare the specifications/properties for 3/8" (ferrous) High tensile Steel cable with 3/8 " Stainless Steel cable. Then you will understand.
@@RF-yh3qh The construction "style" potential I raised is just that. A potential to provide a skewed result. The important issue is the issue YOU really can't grasp; Either by design or by default. To repeat myself "Steel winch cable is not Stainless steel 316 cable".
Why aren't all rock climbing and arborist ropes made from Dynema if its so much stronger ? I have CE rated Drenaline as an arborist rope and its rated for about 7000 lbs where the Dynema here broke at 17000lbs .
I'm no professional with ropes, but I imagine it has something to do with shock loading. If a rock climber were to fall, dyneema may not take the shock. You would want the rope to stretch some which I'm fairly sure climbing ropes do so you don't suddenly stop and bones start breaking. The safety harnesses where I work have a coiled section sewn together for shock mitigation in the leader, but I think that's figured in to climbing rope. Also from experience with winch rope, dyneema doesn't do well with rubbing against sharp objects like rocks, sticks etc. while under tension. It starts to fray rapidly.
Ya I've used both had the ¾ inch dyneema rope break time and time again but I switched to ⅜ inch STEEL cable and I haven't broke it yet and it's been 3 years since I replaced a plastic rope with a piece of steel
Hi All, Dyneema does not work at elevated temperature and there is problem of internal heat built-up. Better to go for aramid ropes which are safer, stronger and greener than Dyneema / Steel.
because it's funny. Anyone that has ever winched, knows you aren't pulling in mid air, in a clean lab. synthetic cuts easily in real world applications. It has its purposes, but winching is a bad idea. Once you're stuck with lockers and hard core equipment, you're in the $hit, and it's not a clean lab. The real environment is hostile. Sure people try to place blankies on the rocks to cradle their synthetic cable, but it doesn't really work. Everything moves. Also UV is is a mother. Expect to replace your cable every year if not every use. You're not going to get 20+ years out of it. When your Jeep and your life is on the line, don't get synthetic.
Try and tout dyneema's breaking danger as being less somehow, you're full of it. That steel cable still held after breaking, presenting zero danger of backlash. The dyneema is like a bullet against the attachment points. I love the stuff, but dyneema fails to be safer regarding breaking backlash.
the scale shows 24 lbs when the steel cable broke the scale shows -465 lbs when the dyneema rope broke I'm keeping my steel cable it will outlast 3 or 4 dyneema ropes
