Weight Hang Test

EricV said:
Wait, what? Sal Glesser talked smack? Now thats something I have to see to believe.

But I don't doubt the sentiment of the tri-ad not being much stronger than the compression lock. I always thought spyderco machine was a form of a swinging pendulum impact testing machine. Which would be testing impacts rather than static weight, giving different results.

Heres a random pic of a pendulum impact machine.
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ya that statement may be true, there are probably folders that can hold weight equal to some tri ads, a heavy duty frame lock may keep up with a recon1. However, I don't think it could match a spartan or espada.
 
I can't figure out how an impact test would work to test the lock without the rest of the handle construction or the blade grind/profile completely overwhelming the properties of the lock. I also don't know how the force measurement translates to the torque rating, since the length of the swingarm must also be accounted for.
 
For normal cutting lock strength is not a huge deal but if you are going to stab something as hard as you can, especially in reverse grip, then suddenly it starts to mean a lot more to you. IMO people rationalize away the importance of a strong lock so that they can feel like whatever they have is good enough even though they have no idea.
 
mystro said:
All I can say about the new Cold Steel tri-ad lock is my Recon 1 has play in it after very little use. I could care less if it holds 200lbs if its got slop in it.
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I must have flipped-open my CS Rajah 2 hard AT-LEAST a couple hunded times and the lock-up is still as tight as a bank vault. It also has the Tri-Ad lock
 
DemkoKnives said:
ya that statement may be true, there are probably folders that can hold weight equal to some tri ads, a heavy duty frame lock may keep up with a recon1. However, I don't think it could match a spartan or espada.
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Both the spartan and espada are very impressively solid, I completely agree.

Thanks for replying, stands to reason you would have the most experience with all this.


Hardheart I don't know much about those machines other than having seen them used with an index sheet. For knife use I would think you could use a non ground blade and hit near the pivot just after the ricasso, but I'm just guessing. I agree that any impact test would test the handle design just as much as the knife, but doesn't the triad hanging test do similar?
 
Picksmith said:
Sal said this on his forum.
"We've broken Tri-Ad locks and they aren't any stronger than Compression, Ball bearing, lock-backs or Axis locks."

Then talked alot of smack about how they don't publish results, talk smack or feel the need to "prove" anything. Why would he exaggerate?
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Do you have a link to this thread? I'd like to see Sal smack talking about not smack talking. Something tells me he was just stating facts.
 
Picksmith said:
Sal said this on his forum.
"We've broken Tri-Ad locks and they aren't any stronger than Compression, Ball bearing, lock-backs or Axis locks."

Then talked alot of smack about how they don't publish results, talk smack or feel the need to "prove" anything. Why would he exaggerate?
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I don't think this was meant as a knock on Sal, but to be clear, Iwas a part of that discussion, or at least watched it unfold, and I can say that Sal wasn't talking smack. Actually he said that he didn't believe that it was necessary for knifemakers to downplay the competition. HE then went into a very nice, very informed explanation of the give/take of strength versus weight versus cost effectiveness. He said that they had broken those locks as well as EVERY type of folder that Spyderco makes and said that locks of the same usage type were comparable. While he never gave outright specifics, he did say some things about at least how the Spydercos performed and what they were looking for as far as tolerances, which was about getting all the parts to a specific strength that one didn't fail before the other. Making the knife AS A WHOLE X amount of strong and they worked to get to certain weight and strength capabilities of the entire knife so that it fails as one unit. Sal did get a little animated but that's because, true or not, it appeared that the person who started the whole thing was make a blanket statement that Spyderco mechanisms were somehow ingerior or weak on the SPyderco forum. Sal got a little Salty but then apologized (though there was no need). After spending some time in that forum I know the level of professionalism of Sal and his company is unrivalled, much like a lot of the people on this forum. I have to say from what I've seen the next time Sal talks smack will be the first time! :grumpy:
 
Nonprophet said:
Sal did get a little animated but that's because, true or not, it appeared that the person who started the whole thing was make a blanket statement that Spyderco mechanisms were somehow ingerior or weak on the SPyderco forum.
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Nope. That guy simply stated that he wished that Spyderco had come up with the Tri-Ad lock instead of CS (Demko). Of course, that goes to say that it is the strongest lock available, but according to the data available to us at this time, this appears to be exactly the case.

It wasn't a challenge or a provocation in any sense.
 
EricV said:
I agree that any impact test would test the handle design just as much as the knife, but doesn't the triad hanging test do similar?
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It tests the handle materials, but the tensile strength of those is quite high. Like the hardened steel in the blade-you can stretch it til it fractures or tears, or you can hit it and it breaks. One requires a lot more than the other.
 
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