BladeHQ "Lock Strength Test II": Dynamic Pressure and Suspicions Confirmed

ALLHSS said:
First although frame locks can hold more weight than liner locks, they're not necessarily safer because they are more prone to lock slipping.
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If the tang angle is the same, a liner-lock and a frame-lock (with no grip pressure added) will have the same tendency to slip.
They work the exact same way.
 
stabman said:
If the tang angle is the same, a liner-lock and a frame-lock (with no grip pressure added) will have the same tendency to slip.
They work the exact same way.
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Here:

ALLHSS said:
I understand that many people consider the hand grip to be a safety feature on the frame lock, and that's fine if you are comfortable with it, but I do not. I don't always hold a knife in a tight hammer grip, the grip that puts pressure against the lock bar, and I've found in use that the hand doesn't consistently put pressure on the lock unless in that grip and can actually pull the lock out of the locked position when doing scooping cuts toward the lock side.

But I will say that my claim you quoted is based on my experiences with frame and liner locks, and my observation that the geometry of the tang lock face on frame locks is usually a steeper degree or curve than on liner locks. It is observational experience, not scientific or anything.
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I would add that I have had frame locks unlock due to the exposed lock being pulled across and off the lock face in a scooping cut in the direction of the lock, such as when whittling, and that isn't nearly as much of a concern with liner locks.
 
ALLHSS said:
Here:
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ALLHSS said:
But I will say that my claim you quoted is based on my experiences with frame and liner locks, and my observation that the geometry of the tang lock face on frame locks is usually a steeper degree or curve than on liner locks. It is observational experience, not scientific or anything.
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I've noticed a ton of angle variation in both.
I have seen really steep liner AND frame-locks, and examples of both where it was almost flat.

I don't think one type is steeper as a rule, at least from what I've seen.
 
stabman said:
I've noticed a ton of angle variation in both.
I have seen really steep liner AND frame-locks, and examples of both where it was almost flat.

I don't think one type is steeper as a rule, at least from what I've seen.
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There's definitely variation. I have personally found that the trend of super early lock up is mostly propagated on frame locks, and is usually done through a steep tang lock face. Just what I've observed.
 
ALLHSS said:
There's definitely variation. I have personally found that the trend of super early lock up is mostly propagated on frame locks, and is usually done through a steep tang lock face. Just what I've observed.
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Ah, I see what you're saying.

The earliest lock-up I have is on my ZT 0801...it's almost too early. I need to use this thing more to get it to wear across if at all possible.
The funny thing though? The tang is almost flat across; very little angle at all. :D
 
While I was impressed by some of the performances, especially the bolt-lock, I would argue that the liner-lock did not "fail" at all. The lock deformed and might be considered "broken", but the knife never folded and thus the lock did exactly what it was supposed to do when a great deal of force was applied. It may have ruined the knife, but the user would still be safe. I would like to see that particular knife retested to see how much force it would take to actually close the knife, not just damage it. Also, I would prefer to see a Military tested vs. the Tenacious. With that said, I would be discourteous not to thank BHQ for the testing.
 
i dont hard use most of my knives. but these videos have been very interesting to me. maybe it was the manner in which they were recorded, but i appreciate the bladehq videos more since they seem to be more of a test of the many products rather than a bit of a pissing contest between the cs line and other known brands. The cs vids seem to be just ridiculous non real world applications at times. maybe this is just the way i took it. if i was the designer of what is the "strongest lock" in the market i would show off to the world as well so i guess i cant be that mad about it. hahaha
 
ALLHSS said:
I wish they would have tried a knife with the updated midlock as on the Native 5, even the lightweight, as I know first hand it is a greatly improved design.
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I've seen you mention the updated midblock on the Native 5 several times. How exactly has it been updated? I have a Native 5 lightweight and I don't remember seeing significant changes from their other lockbacks, even when disassembled. I'll have to take a better look at it.
 
Most people don't walk around with their finger on the trigger of a gun, yet most people like to have at least one form of safety. If the safety is there, most people want it to work reliably. If you're buying it for a lot of people then they test the safety to ensure it does what the manufacturer says it does and manufacturers subject their firearms to this testing when bidding for a contract. If they fail then the gun doesn't get bought. During the tests the testers do everything they can to get the safety to fail because in the real world in true use anything can happen and they need to know exactly what it is that causes the failure.

These tests are no different. For the people who say these tests are bunk, then they don't need a locking knife to begin with. To those who actually need the knife to lock, they probably like to know what's reliable and what isn't. I'm turned off more and more to frame locks. Every test that someone devises shows that they're the weakest form of lock and are almost on part with a stiff slipjoint. No thanks.
 
Kyle K said:
I've seen you mention the updated midblock on the Native 5 several times. How exactly has it been updated? I have a Native 5 lightweight and I don't remember seeing significant changes from their other lockbacks, even when disassembled. I'll have to take a better look at it.
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A deeper recess for the lock, a longer lock notch, and better geometry. It's not a knew lot, it's an update.

In comparing it to a normal Spyderco back lock, the updated version has developed none of the typical forward and back play and has a more solid lockup.
 
Woohoo, lockbacks! :) My favorite style of lock did very well! I need a Sage 3 and Manix 2 XL now, of course...

I don't think this test means that liner and frame locks are necessarily bad locks; to me, these are light duty locks built for convenience, which is completely fine for EDC.
 
Kwon Kwang said:
Woohoo, lockbacks! :) My favorite style of lock did very well! I need a Sage 3 and Manix 2 XL now, of course...

I don't think this test means that liner and frame locks are necessarily bad locks; to me, these are light duty locks built for convenience, which is completely fine for EDC.
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Yeah, but the kicker is that I, personally, find them less convenient than the Axis, CBBL, Bolt, Compression and Button locks just to name a few.

Oh, and I recommend the Manix 2 XL highly. Underrated knife, I'm telling you. ;)
 
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