I watched the vid and very good job Noss.

DL351,

I guess it has already been clarified that the Rubber handles don't really absorb shock, but I guess I will try to explain the physics behind it anyways.

I think you were thinking of it it a little incorrectly. For any type of impact, the object will receive full force, no matter what. Hence, no material actually absorbs shock. Instead, materials are made to distribute shock evenly and this does "minimize" the force per square inch.

When Noss hits the handle, the force from his body and the sledge hammer is going into the Res-C, handle. Thus most of the energy, actually, all of the energy, is being placed into the handle. After that, the energy is distributed an through out the blade. When the blade vibrates that is the time it is actually releasing the rest of it's energy into the air (yes I may sound like I'm BSing, but why is there a *bing* sound when you hit metal, sound waves are vibration of air). And at this point, the more *springy* the steel is, the more energy it will release. Thus upon any type of impact with the tang, the Res-C handle will receive full force and the steel will be the one to absorb shock.

Here's a good example. If you've taken a fight class you might have to wear a bunch of padding. The padding softens the blow to your impacted areas, but you still receive the full force and you will still move in the direction the hit was taken from.

For chopping, the impact force is actually coming from the blade. At this point, the energy must travel from the point of impact (say when chopping) to the handle. When this happens, the metal contact points with the Res-C transfer energy to the Res-C which then transfers energy to you hand, and so forth. Thus, at this point the steel will receive energy and the Res-C handle will absorb shock.

Yeah Noss does some nice work. When he speaks I listen!

DL351: No problem. se7en made a post on KF that was similar to yours about the handle and I was referring to it an not yours here.

anyone who thinks that wrapping the rd-7 with res-c woulda saved it is extremely optimistic. when i saw people saying the res-c was the advantage, i couldn't think of a nice way to respond without offending someone, so i let it go.

people will always try to find way to believe what they want.

noss, i suggest you compliment the ranger on edge holding. call it super tough so that people have something to hold onto rather than cry.

yeah, isn't there a difference between "shock" and the force applied to an object anyway?
(maybe what sharp said had to do with this, idk)
cause it's still getting hit with the same amount of force...
right?
idk.
but yeah, the way the rd broek seems in the realm of possibility for me, thats the only thing I didn't like... I almost feel that I have to baby it just a little now.
or not get any stronger.
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i honestly thought it would have taken more abuse since 5160 is a spring steel, basically 1060 with a little Cr for deeper hardening.

i was also disappointed at first, but lookin at that edge when the knife was done, i'm about ready to order an rd-9.

mag,
i too have seen folks hit nails w/ no ill effects to the blade.[in reference to kf post]




to me it doesnt matter. both are hard use knives (ranger/scrapyard) & will last a "normal" user a lifetime of service

the edge?
it held up like most of the edges...
the s6 chiped although noss used way tougher conrete on it... it had like chunks of rock in it that stuff.
but the rd's do hold a pretty good edge.
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Well, you have to remember most spring steels are rated at such high hardness.

Plus you need to remember the QC on the production line are sub par. Many people get bad edges, poorly done handles, etc, etc.

but justin does rarley have HT problems...
like I said... he just doesn't put a great edge on the knife unless you request him to do so.

vance, i completely forgot about that. i'm gonna go hug my dog fathers. yes, both.

Hmmm, I have not meant to sound like Res-C would save the Ranger, rather that the Res-C should not be dismissed as not making a difference. Again though, this is most likely due to too many physics and engineering labs at school (which I do realize is not quite what Noss does).

Sharp, I should have clarified, but I was thinking of the impulse of the force. I am talking about the time span over which the force is applied. With the Res-C, the force is applied over a longer timespan due to the elastic qualities of the Res-C. I see the force being applied like a bell curve on a graph (with Res-C) vs. a sharp spike on a graph (no Res-C). To my knowledge, how a force is applied can effect damage that occurs. Also, the Res-C compressing actually does cause less force transfer to the blade. When the Res-C compresses, it absorbs some force, then it releases that force when it expands to the original shape. I do realize that I am talking about minute amounts of force being dissipated, but I just wanted to try to clarify my thought process.

To be quite honest, I don't really care that the Ranger broke. It broke far beyond any limit that I will push my knives to. The thing that surprised me was that the SOG Seal 2000 got a higher rating. I've got a Ranger and Seal 2000 and I'd part with the Seal long before I'd part with the Ranger.