Chris Reeve Green Beret Video Desrtuction Test Completed

Status
Not open for further replies.
The break did occure at the serrations. If there was a micro crack in the webbing it might have contributed to the failure.


DaveH
You for got sunspot activity, we are in an 11 year cycle at the moment.....
 
DaveH: LOL !! A UFO was reported in the area during the test. During the other tests there were not reports of UFOs. :eek: Could this be the reason. :rolleyes:


Evil Eye Earl: Here are your photos.

obj1614geo1323pg76p9.jpg

obj1616geo1325pg76p9.jpg

obj1214geo1327pg76p9.jpg
 
DaveH: LOL !! A UFO was reported in the area during the test. During the other tests there were not reports of UFOs. :eek: Could this be the reason. :rolleyes:

Noss your killing me...
rolling2.gif



Nice looking hammer.

Have you considered having the faces milled parallel and surface ground?
 
noss, can you tell when a knife is about to give it up? After watching the video several times you seem shocked/surprised when the GB fractured.
 
Hammers also work harden - ie. the face gets harder with use. I think this would happen a lot faster if it was used to hit something harder than the hammer (the prev mentioned possibility of the hammer shattering). I think the hammer probably would be more likely to shatter as this use continues - be careful and you may want to change out this hammer every so often.

When you clamp one end of a knife in a vice and beat the other end with a hammer, the magnitude of force is much greater than anything you can do holding the knife in your hand (without beating it with a hammer). With the large moment that is put on the knife doing this, maybe what caused the knife to fail was related to a lack of tensile strength?

Nice idea Evolute, and thanks for the comments, stabman.:)
 
eagle359: I don't now exacly when a blade will fail during the test. I was
surprised at the moment of failure. The last batch of knives have been very tough.

The only one time I new for sure a blade would fail during the hammering was the SOG Jungle primitive. It has a saw and I new a few hits would cause failure.
And this happened. http://knifetests.com/page12.html
 
I really can't believe people are in a Noss's review thread and are asking for scientific controls and other such data. Have you been to the site. The guy beats knives through concrete slabs with a hand sledge. I think if Noss was comparing two knives and knife number one broke 3 hits before knife number two and he made the statement that knife number two was superior you would have a case. If he does the same test and knife number one fails after six wacks into wood and knife number two fails only after having had sixty wacks into wood, sixty wacks into concerte, and finally sat on by Rosie O'Donnell there is a bit of knowledge to be gained here, regardless of the lack of pie charts and graphs. Not all knowledge is expressed in scientific equations. If you can't see that you need to get out of the lab and live a little.

FWIW I don't own a GB but do own a CRK One piece. I don't think less of either CRK or the GB because of this destruction test. Noss designed the tests to make knives fail and he was successful.
 
Hammers also work harden - ie. the face gets harder with use. I think this would happen a lot faster if it was used to hit something harder than the hammer (the prev mentioned possibility of the hammer shattering). I think the hammer probably would be more likely to shatter as this use continues - be careful and you may want to change out this hammer every so often.

When you clamp one end of a knife in a vice and beat the other end with a hammer, the magnitude of force is much greater than anything you can do holding the knife in your hand (without beating it with a hammer). With the large moment that is put on the knife doing this, maybe what caused the knife to fail was related to a lack of tensile strength?

Nice idea Evolute, and thanks for the comments, stabman.:)

Thanks for tip on the hammer. I may do this for safety.

When I do the side impacts on the tang mounded in the vice. Most knives fail this very easy even some of the top performers. Only a few knives have been able to withstand this. The Busse FFBM the Scrapper 6 and the RTAK II and the Kabar Heavy Bowie.
 
Noss designed the tests to make knives fail and he was successful.

Yes and they have all failed..But they did not fail equally. If someone wants to go count the hammer hits between the GB and the Busse FFBM or the GI Tanto then be my guest. The number difference here will be very,very big.
 
Noss you do not need to explain yourself... the test are there easy for all to see, some people just can not get over the fact that the GB isn't as claimed, and so what, CR still makes wonderful blades, while just today as I was beating a 01 blade down with a hammer for some fire wood, (those east canyon winds get a little cold) i had to stop and run outside the shop as my nephew was pointing to the sky saying he saw a UFO, I never saw it. so those little theory's are blown to hell on what could have went wrong, now I come back and see work harden? I don't see anywhere in the video that resembled the shaping of steel, but ya know what, keep that same hammer and test a different blade not made of S30, then question working harding again, give me a break people, this isn't rocket science, or even science for that matter, just a little test to see how much stress a blade can take before failure.
 
Yes and they have all failed..But they did not fail equally. If someone wants to go count the hammer hits between the GB and the Busse FFBM or the GI Tanto then be my guest. The number difference here will be very,very big.

Thanks for the pics noss4:thumbup:
Work hardening of the hammer head is what I was looking for and to see if it
might have transfered metal and debris into the hammer head.You may want to get another one as this one could explode at any time .Flaking and chipping now.

I watched the video again and with the rounded backbone of the knife a square hit could not be possible.You were not hitting it hard ....but hard metal to hard metal causes stress fractures and sometimes a slight blow is all it takes....with the coating on the blade a hidden stress crack could have come from batoning or penetration as the knife was twisted and bent and serrations do not like that as they are stress areas already.

How many hits a knife can take when hit with a hammer before it breaks has nothing to do with knife strength...again stress factor

Entertaining value 6 ...but speed up the action and go to the hardware store or tool truck and buy some impact gloves....your wrists and hands will thank you and get some pics of the UFO's .:D
Look up work hardening on the internet...good stuff there and it will give you some more ideas.
 
first that is a sludge hammer made for impacting, and its impacting and bending it is far far below its yield point to make any effect on that hammer, we have a guy that makes semi trailer door pipe, this consists of drilling two holes one at each end, installing a 5/16th thick stainless rivet at each hole and smacking it around 7 times to deform it enough to hold the parts together, the table it lays on is 6" thick steel, lets see, to cover his working time means he has to make 86 pipe, so thats 172 rivets, and about 1,204 whacks everyday, 40 hours a week, and he has used this hammer for around 3 years now, you can do the math on that, I thick Noss's hammer will be just fine, but thanks for your safety concern.
 
first that is a sludge hammer made for impacting, and its impacting and bending it is far far below its yield point to make any effect on that hammer, we have a guy that makes semi trailer door pipe, this consists of drilling two holes one at each end, installing a 5/16th thick stainless rivet at each hole and smacking it around 7 times to deform it enough to hold the parts together, the table it lays on is 6" thick steel, lets see, to cover his working time means he has to make 86 pipe, so thats 172 rivets, and about 1,204 whacks everyday, 40 hours a week, and he has used this hammer for around 3 years now, you can do the math on that, I thick Noss's hammer will be just fine, but thanks for your safety concern.

What does this have to do with destroying knives....rivets are made to bend
without breaking ....most people use an air hammer and dolly.
 
As has been shown by this thread what two people observe is subjective.
That is true to a certain extent. In this case, it is without functional merit.

Hard repeatable data is objective.
Two independent tests have been done with strikingly similar results. That would be a repetition.

If two or more of these tests can be done and someone can show how much, how hard, what force, how and where it was clamped and it then I would call it data.
There's video. Take a look.

Even the tester can not tell you how hard he strikes with the hammer.
You can't tell how hard someone is swinging a hammer while watching him? :rolleyes:
 
Wow, i read this whole thread in one sitting, as well as parts of the other referenced Cliff/gb thread too. Now I want to take a nap.

Yes it could be made from a tougher steel... Maybe Jerry Busse could help he seems always willing to help our troops.

But clearly the Special Forces dont have any problems with it otherwise they'd stop using it. What i really wonder is how often the Special Forces are actually using these knives?

It is my understanding that people in Elite Groups like these often get momentos like this that they can never actually use, they simply put it away as a treasured commemorative.

Its my understanding from friends in the service (past and present) and other sources (books, shows forums, etc) I visit that Army Special Forces are rarely in uniform while in the field and and even in uniform wouldnt be carrying something that would so obviously give them away as more valuable to terrorists as prisoners than other guys. With the war on terror that seems more true than ever before.

I've had s30v in very non military use chip and dissapoint me.

But like small seb! Not a single problem yet.
 
I remember a couple of years back some, guy with the initials CS ;) mentioned that the Green Beret was run soft and overall was a fairly poor design. The designer then came on the thread and proceeded to attempt to rip him a new one. I'm not saying that CS's and Noss's experiences are in fact the definitive statements attesting to the weakness of the design, I'm just pointing out what this reminds me of.

Thanks for the test Noss and thanks for continually contributing to these forums in this way. I think you've save these forums from endless debates of "what if" scenarios.
 
Wow, i read this whole thread in one sitting, as well as parts of the other referenced Cliff/gb thread too. Now I want to take a nap.

Yes it could be made from a tougher steel... Maybe Jerry Busse could help he seems always willing to help our troops.

But clearly the Special Forces dont have any problems with it otherwise they'd stop using it. What i really wonder is how often the Special Forces are actually using these knives?

It is my understanding that people in Elite Groups like these often get momentos like this that they can never actually use, they simply put it away as a treasured commemorative.

Its my understanding from friends in the service (past and present) and other sources (books, shows forums, etc) I visit that Army Special Forces are rarely in uniform while in the field and and even in uniform wouldnt be carrying something that would so obviously give them away as more valuable to terrorists as prisoners than other guys. With the war on terror that seems more true than ever before.


.

Correct.....These are presentation knives and I seriously doubt any of them get/got used hard.
 
Status
Not open for further replies.
Back
Top