Umnumzaan fails spine whack? (not my vid)

Ha ha.... welcome to Blade Forums.... where beating a dead horse has been raised to a fine art.

clockman said:
Why I seda why are we hashing and rehashing the same basic issues

that WERE ALREADY DISCUSSED after the umnun polish knife test???????????

There must be other topics about knives that are MORE INTERESTING than

going over the same issues again and again and again and again and over

and over and over and over..........................................
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orthogonal1 said:
If the knife had enough force applied in the closing direction that the lock was damaged, the knife would have folded without the rather low level spinewacks shown in that video.

And you know this how?

Stabbing through the refrigerator did not appear to be that difficult - which is expected given the poor constuction of refrigerators in the last few years. Further, the prying didn't appear to be as forceful as you allege. I've pryed blades out by kicking the handle and the lock maintained

Irrelevant.

- I guess you could be saying the CRK is just not very robust, though.

I don't believe that I suggested that in any way or manner.

And, yes, there are many lock mechanisms that can take that type and level of force.

Name them.

You weaken your discussion by talking about what coulda, maybe, possibly did happen "off camera". First you propose that the apparent refrigerator stabbing was too much for the CRK lock to withstand and damaged the lock, then you go on that possibly some other incident broke the lock. Which is it?
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It is possibly both or neither. My statements were based on observable actions. As a professional witness in the past, I know the difference between fact and conjecture. I thought that I made it clear which was observable actions and which were non-observable possibilities. Either way, stabbing a folder into a fridge constitutes gross abuse in any reasonable mind.
 
A.P.F. said:
It is possibly both or neither. My statements were based on observable actions. As a professional witness in the past, I know the difference between fact and conjecture. I thought that I made it clear which was observable actions and which were non-observable possibilities. Either way, stabbing a folder into a fridge constitutes gross abuse in any reasonable mind.
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"And you know this how?" Having broken locks when stabbing/forcing knives into things. Go buy some knives, give it a try and wear gloves. Refrigerators aren't needed, either.


Stabbing a folder into a newer refrigerator is medium hard use, depending on the frig.

As a "profressional witness" - irrelavant - you should know every opinion you posted was conjecture as to why the lock failed. The lock shouldn't have failed, though I don't believe framelocks are "all that".


Locks that can take that type and level of force: Spyderco Ball bearing lock, the Spyderco CBL, the Axis-lock, the Tri-Ad lock, Plunger-locks as in the MT UMS and other makes, the slide lock from Dalton, and there are others. Depends on the knife, of course. And note that blade profile has much to do with how well a knife endures stabs - that is why I like the blade tip above the axis of rotation.

Heck, even liner locks such as on the Spyderco Military and Benchmade 800 have taken penetrating sheet metal multiple times in my use without the lock failing - though the Military noticeably flexed. And, yes, given time, you will break them.
 
orthogonal1 said:
"And you know this how?" Having broken locks when stabbing/forcing knives into things. Go buy some knives, give it a try and wear gloves. Refrigerators aren't needed, either.


Stabbing a folder into a newer refrigerator is medium hard use, depending on the frig.

As a "profressional witness" - irrelavant - you should know every opinion you posted was conjecture as to why the lock failed. The lock shouldn't have failed, though I don't believe framelocks are "all that".


Locks that can take that type and level of force: Spyderco Ball bearing lock, the Spyderco CBL, the Axis-lock, the Tri-Ad lock, Plunger-locks as in the MT UMS and other makes, the slide lock from Dalton, and there are others. Depends on the knife, of course. And note that blade profile has much to do with how well a knife endures stabs - that is why I like the blade tip above the axis of rotation.

Heck, even liner locks such as on the Spyderco Military and Benchmade 800 have taken penetrating sheet metal multiple times in my use without the lock failing - though the Military noticeably flexed. And, yes, given time, you will break them.
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:thumbup:
Many people tend to overestimate frame locks. They are nothing but slightly overbuilt liner locks. If you want a bomb-proof lock, then you should look at the BBL or the CBBL.
 
marcengels said:
Does anyone know if the person in the video returned his knife to CR so they can inspect it??
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Yes, CRK contacted our passaround guys yesterday (CRK crew was at SHOT SHOW, that's why it has taken more time), the knife will be sent to CRK soon.
 
This has been another entertaining thread.

Another extreme-use test , another failure caused by who knows what.

Another group of forumites that are aghast that such a reputable knife could fail.

28gzbs1.jpg
 
Tostig said:
This has been another entertaining thread.

Another extreme-use test , another failure caused by who knows what.

Another group of forumites that are aghast that such a reputable knife could fail.
Click to expand...

If you make it, I can break it.

Folders, will.
 
clockman said:
Why I seda why are we hashing and rehashing the same basic issues

that WERE ALREADY DISCUSSED after the umnun polish knife test???????????

There must be other topics about knives that are MORE INTERESTING than

going over the same issues again and again and again and again and over

and over and over and over..........................................
Click to expand...

Welcome to blade forums,
 
Tostig said:
This has been another entertaining thread.

Another extreme-use test , another failure caused by who knows what.

Another group of forumites that are aghast that such a reputable knife could fail.

28gzbs1.jpg
Click to expand...

At something it was never designed to do. Who saw that coming?
 
LorenzoL said:
:thumbup:
Many people tend to overestimate frame locks. They are nothing but slightly overbuilt liner locks. If you want a bomb-proof lock, then you should look at the BBL or the CBBL.
Click to expand...


Ahhhhh not really, I beat the crap out of a SmF and ZT 0301 on video and neither one failed after I was done, spine whack or Over Strike. ;)

Frame Locks are stronger than you think if done correctly. ;)
 
JNewell said:
What happened is that the knife was never sent to CRK for inspection. Check the thread in the CRK manufacturer's forum. Reach you own conclusions...
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It was abused you know. ;)

If they send me one or warranty it 100% I will do a test on one on video. ;)

Warrantied 100% means I pay shipping only if something goes wrong with the knife. ;)

Yes I would beat the crap out of it on video....... Hard use field test, not Destruction testing....

I won't test a $300+ knife that's not covered completely. ;)
 
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I watched his videos and I'm not sure of his intentions "or being an a**" - seems like he was doing a very mild version of of destruction or hard use tests. What's the big deal? It sure cut like a champ though!
 
I know that very well. I was there from the start of that thread. I've owned an Umnumzaan and the only reason it isn't still here is that I prefer the Classic/21 ergos to the ergos of the "Regular," which are very, very similar to those of the Umnu. I have no questions whatsoever about the design, manufacuring or reliability of the Umnuzaan.

Ankerson said:
It was abused you know. ;)

If they send me one or warranty it 100% I will do a test on one on video. ;)

Warrantied 100% means I pay shipping only if something goes wrong with the knife. ;)

Yes I would beat the crap out of it on video....... Hard use field test, not Destruction testing....

I won't test a $300+ knife that's not covered completely. ;)
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Perhaps knife manufacturers should worry about designing for spine whack tests rather than for cutting performance. We wouldn't want to get our priorities turned around, would we?
 
Just pulled my Umnumzaan out of my pocket to try a very slow opening of the Blade and I get a 75% lock up the five times in a row, opening with one hand as slow as I can.

To slow it down even more I opened the blade with two hands for an extremely slow open and still get the 75% lock up.

I get an 85% to 90% lock up and normal to fast (Non-Flip or fling) opening pushing the thumb stub all the way till open.

BTW This knife has been EDCed and used for about a month and a half.


IMHO The whack Test is just that, Whack. :D
 
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