Modified Triad lock on a custom knife

I

insta9ves

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Apr 3, 2007
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Just saw this video on youtube:
https://youtu.be/YBCexaD-ays

Is this considered a Triad lock? It doesn't looks like it's coming from Cold Steel or Andrew Demko.
The release mechanism looks cool though, similar concept to the new Tiger Claw karambit model.
 
Definitely not a tri-ad lock. It looks like the blade is ratcheted into place against a stop pin by some inner liners. It's hard to tell, but i think negative pressure would be directed towards the little steps in the ratcheting liner rather than the stop pin like in the tri-ad. Seems like a cool design though.
 
Feuerfreiguy said:
Definitely not a tri-ad lock. It looks like the blade is ratcheted into place against a stop pin by some inner liners. It's hard to tell, but i think negative pressure would be directed towards the little steps in the ratcheting liner rather than the stop pin like in the tri-ad. Seems like a cool design though.
Click to expand...

It is a triad lock. Pay attention to the 2nd half of the video. You can also clearly see at 1:08 the lockbar being raised before the blade is released. Also see how it locks up at 1:28.
I don't know where you see the ratcheting liner from. The ratcheting is only because the blade tang is gear shaped, instead of a smooth curve allowing it to make the sound. Also the lever is there to hold the lock bar open during closing, otherwise the blade wont be able to close due to the ratcheting at the blade tang.
 
Doesn't seem like the best design -- most of the teeth on the blade don't serve a purpose really when they knife is fully opened -- unless there's some unseen function to parts inside the handle.
 
knifedude802 said:
Doesn't seem like the best design -- most of the teeth on the blade don't serve a purpose really when they knife is fully opened -- unless there's some unseen function to parts inside the handle.
Click to expand...

I think the teeth are just for the sound - intimidation factor.

This knife looks like it's modeled after the traditional Navaja from 18th century which makes this distinct ratcheting sound called "carraca".

http://en.wikipedia.org/wiki/Navaja
Search for "carraca", there is even an audio in that page showing the sound of the Navaja opened.
 
hkyew said:
I think the teeth are just for the sound - intimidation factor.

This knife looks like it's modeled after the traditional Navaja from 18th century which makes this distinct ratcheting sound called "carraca".

http://en.wikipedia.org/wiki/Navaja
Search for "carraca", there is even an audio in that page showing the sound of the Navaja opened.
Click to expand...

Oooo, cool. I had no idea, nice post. That kinda does make this knife that much cooler, and I agree 100% that it's modeled after that.
 
I have a similar lock on the windpump brake on the farm that has been there for 50+ years.....
 
Doesn't look much like a Triad lock to me, other than that they could both be considered modified back locks. You brought up the traditional navaja and this looks like a more modern take on that style of knife, with a very similar locking mechanism.
 
hkyew said:
It is a triad lock. Pay attention to the 2nd half of the video. You can also clearly see at 1:08 the lockbar being raised before the blade is released. Also see how it locks up at 1:28.
I don't know where you see the ratcheting liner from. The ratcheting is only because the blade tang is gear shaped, instead of a smooth curve allowing it to make the sound. Also the lever is there to hold the lock bar open during closing, otherwise the blade wont be able to close due to the ratcheting at the blade tang.
Click to expand...
I see what your saying, but it's not a tri-ad lock. At least not in the sense we normally refer to (the one designed by Demko). Navajas have either the liner or tang with ratcheting steps cut into it. It might be similar to the triad in the same way the spyderco powerlock is, but not the same. Spinewhack a navaja like this and you'll see what I mean.
 
Most likely not as strong as the triad, but concept is similar. Anyways just sharing some unorthodox mechanism.
 
The Tri-Ad has 3 main components that separate it from the traditional back lock: the stop pin, the extra deep tang cutout, and the elongated rocker pivot hole. The stop pin absorbs forces that would normally be pushing and pulling on the rocker, while the deep tang cutout and elongated rocker pivot hole allow for self adjustment of the lock as parts wear. The knife in the vid definitely has the stop pin between tang and rocker, but I don't know if it has the other features. It could just be a ratcheting back lock with the addition of a stop pin. Cool looking knife, in any case. :thumbup:
 
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