Is there anything else like the Sebenza pivot?

Zeta33 said:
They are absolutely substained accusations but since you've asked nicely, for once, I will let it rest. Have a good day Victor!
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That is wise.

Maybe in one of my many China trips, we might run into each other and have tea and dim-sum!
 
victorf said:
That is wise.

Maybe in one of my many China trips, we might run into each other and have tea and dim-sum!
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I see that you went back and edited your post. No matter, Victor. I still wish you a good day, no matter how immature that was on your part.

Edit: Oh and for credit where it is due, nice job on the SnG :)
 
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I want to thank all of you for the information, and I really appreciate the wealth of knowledge that is on here. As beautiful as the Rocksteads are I must say that a Shirogorov is probably going to be my next purchase. I've never been drawn to flippers, but after some time on youtube I can say they look like mad fun.
 
Hinagea said:
I want to thank all of you for the information, and I really appreciate the wealth of knowledge that is on here. As beautiful as the Rocksteads are I must say that a Shirogorov is probably going to be my next purchase. I've never been drawn to flippers, but after some time on youtube I can say they look like mad fun.
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I am thinking of getting both the Rockstead and the Shirogorov, so there has been some good info here :)
 
A lot of times this is all just pure knife geekiness talking. I bet everyone on this board has far more knives than we each need. So have fun like what you like, buy, sell, trade and have fun!

There's always gonna be a guy who has more knives and better knives than you buy at the end of the day the ones at all prices ranges all cut well. Even the cheap ass Chinese stuff.
 
egally08 said:
I don't need the factory specs to measure the gap between the size of the standoff and the combined sized of the blade+washers or pivot bushing. Obviously I'm measuring the tolerances of the knife, not the difference between the actual size and the targeted size of the hardware.

For example, if you have a backspacer that's .1580 and a blade+washers that's .1540 - That's a .004" gap. You could be feeling blade play at that point. That's why it's important to machine those components to the same size. The smaller the gap, the tighter the tolerances.
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That inly means that that particular knife has that tolerance. Make ten of those and measure. Do they all measure the same?

A good fit can be achieved by many things in a production environment. You select components until it "just fits".

A lot harder is manufacturing each pivots radius, shoulders, washers, blade thickness and hole for the pivot so that when you assemble ten of them they ALL measure within 0.0001 to each other.

Washers are always the problem I'd think. They never come perfect in lots of 1000s. And washers are always an "interferance" fit.

When the washers are used up (like brake pads) its time to replace them. Simple as that.

If I where CRK I'd make sure the blade thickness at the pivot is correct and that the surface finish is NOT beadblasted. I'd just add 50 bucks to the price and bead blast them oversize and then polish where the washers are (to a certain finish) to specification +- 0.0001 inch. Or to whatever specification is needed.
 
Discuss the question at hand, not each other.
 
knarfeng said:
Discuss the question at hand, not each other.
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Let me add something here Frank. Arrogance is a sign of insecurity and is wasted here really. I can assure you that no one cares about the amount of money made by any one else, what their "jet setter" lifestyle may entail, or how exacting and above the bar they are in their work. Do not assume you know the people you are attempting to put down with snide remarks and smarmy commentary. Those that know the least, know it the loudest. If the rudeness continues appropriate action will be taken, it would really be unwise to think you can outsmart the potential violation of rules and subsequent infractions to follow. It's simply really, be kind and treat others as you would like to be treated.
 
Victorf, what is that tool being used on the pivot on that first picture you posted a few comments up?
 
I believe he may have made that,..but I could be wrong.
 
bhyde said:
I believe he may have made that,..but I could be wrong.
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Possibly. If a person is interested in THAT tool, I cannot help, but if you simply want a tool designed for that pivot, simply google "chain ring tool" and you can own a very capable tool designed specifically for that type of fastener for less than 5 bucks;)
 
Happy to learn that Rockstead uses a similar pivot bushing - it's a feature I had always admired about the Sebenza and has made me a couple of steps closer to owning a Rockstead folder. If it has similar tolerances and the major steel upgrade at a similar blade length and weight then it sounds like a winner to me.
 
Rockstead Higo or Hizen both are similar to CRK with open back design for easy cleaning, tighten and without adjustment after reassembled, using only two screws - but that is where similarity ends, one in particular, is the lock bar interface of using harden stainless insert with a 61 HRc - which is harder then the current crop of S35 blade used on the CRK line:

https://www.google.com/url?sa=t&rct...Nl5PU_GCZ_yJFtQ94FhpSzg&bvm=bv.90491159,d.cGU

Other Rockstead, most are laminated blade, two piece handle design with enclosed back, similar pivot concept but a little more complex in built, this old link shown pivot exposed after hard used:

https://www.google.com/url?sa=t&rct...DCpdoUZ179Rl_VyFC7Vc9fw&bvm=bv.90491159,d.cGU

This is mine, after changing my mind two weeks into waiting on a Higo. I prefer clad ZDP189 with VG10. Maybe Rockstead treats their home market different, since I decided to deal direct with Japan. The rather high HRc is not the norm and I feel privileged. I have been tracking Rockstead the past few years, the highest for their ZDP was 66.9:

DSCN2249_zpslwgpz5yz.jpg


Not much can be said. Rockstead brand is a product line speaks for itself.
 
unit said:
Exactly! Some seem to think that if your tolerances have four zeros, then five would be better and six would be better still. It simply does not work that way. Knowledge of the material properties an the necessary function of the parts can not be overlooked (including planned failure points;)).
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LOVE IT!! it's like if a person who builds wooden decks works to those tolerances. He would be in for a world of warranty replacements when those deck boards swelled with the climate change.
 
Thanks for mentioning my "Lockdown" pivot, Charr, :)
My pivot is something different, but relevant to the original discussion, I think.

It's fully disclosed in the patent:

https://www.google.com/patents/US8561304



Like a "stepped pivot" (which is essentially a standoff), you can crank down on my pivot to rigidly interconnect the handle halves at the pivot point, fixing the distance between them against both compressive and tensile axially directed loads. That's important if you want meaningful assembly rigidity at the pivot point, which has many benefits for the hard-use knife.

That rigid interconnection between handle halves is something no adjustable pivot system has been able to deliver before (at least not that I or the USPTO could find).

The Lockdown pivot provides that absolute, rigid interconnection like a solid standoff, but is also adjustable, meaning that you can "have your cake and eat it too," so to speak. :thumbup:
 
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