Sebenza 25 construction flaw? (Nope, not a flaw, read inside)

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vininull

Joined
May 29, 2012
Messages
60
Hi guys,
so he is the deal - I attach the picture to illustrate it.
On the picture you can see that a stop pin has some kind of notch that allows the blade to move without touching it.
First question - why to do these complexities when good old round stop pin has worked excellent? Doesn't Sebenza wasn't always a synonym of simplicity in a knife world?
Second question and the main reason for this thread - it is happening that during use this stop pin turns a bit, and then things become really ugly, blade starts hitting it during open/closing operations and you hear cracking sounds. And there is no solution for holding this stop pin still.
After seeing this I must say that this knife is a real disappointment for me.

What do you think about it?

7634576.jpg
 
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I had the 25 only for a couple weeks but Im pretty sure I remember the stop pin being press fit into the scale so
it shouldn't be able to rotate. If yours is than thats probably a warranty issue and you should contact CRK and send
it in.
 
reapinItUP said:
I had the 25 only for a couple weeks but Im pretty sure I remember the stop pin being press fit into the scale so
it shouldn't be able to rotate. If yours is than thats probably a warranty issue and you should contact CRK and send
it in.
Click to expand...

do you mean that pin cannot be taken out of the scale? Can someone else confirm this? Mine going in and out freely like a separate part.
 
reapinItUP said:
I had the 25 only for a couple weeks but Im pretty sure I remember the stop pin being press fit into the scale so
it shouldn't be able to rotate. If yours is than thats probably a warranty issue and you should contact CRK and send
it in.
Click to expand...

Agreed. I don't believe that it should be spinning.

As for the complexity. I don't see it as a problem at all. I understand your point about simplicity, however, if the tolerances and fit/innovation can be improved without an increase in price or making the looks overly busy, well, I'm all for that.

I'm not seeing your issue with my knife. Sorry man. :(
 
Strigamort said:
I'm not seeing your issue with my knife. Sorry man. :(
Click to expand...

A question is that you don't see the issue yet and what warranties that it won't show up in the future. Have you taken your knife apart? How the stop pin is made, does if press fit and stuck dead in a scale or could it be taken out?
 
The original ones were press fit in, the newer version has a screw on each side. Look around the CRK forum a little bit and you will see many threads on the variances from when it was released to what is offered now. The differences are very slight.
 
nyefmaker said:
The original ones were press fit in, the newer version has a screw on each side. Look around the CRK forum a little bit and you will see many threads on the variances from when it was released to what is offered now. The differences are very slight.
Click to expand...

So the one I am talking about has screws on each side. So it is natural that pin can spin a bit and bacause that tolerances are so high it causes problems right away. Looks like a construction flaw to me then.
What a mess... Why, why not using simple round stop pin...
 
My 18 Jun 2013 25 stop pin can spin but I am not sure if this is a defect. It does make cleaning a little more challenging.

It jammed on me when I put it back after taking it apart. The stop pin has turned a little when I put it back. It did give me a shock when I can't open the blade. I only noticed this design after I took it apart again to investigate the issue. However, it has not move since I put everything back.

Did your stop pin move after you put it back?
 
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Maybe get the blade exactly where everything should be, pop the other scale on and tighten everything? I'm no expert on the 25, but if that doesn't work is say send it into CRK and let them deal with it.
 
donscpoo said:
My 18 Jun 2013 25 stop pin can spin but I am not sure if this is a defect. It does make cleaning a little more challenging.

It jammed on me when I put it back after taking it apart. The stop pin has turned a little when I put it back. It did give me a shock when I can't open the blade. I only noticed this design after I took it apart again to investigate the issue. However, it has not move since I screw put everything back.

Did the your stop pin move after you put it back?
Click to expand...

Thanks god I'm not the only one who noticed this ;) In such simple knife, everything that causes additional attention during cleaning/using I consider as a not good thing.
My pin moves after I put it back. I think it moves together with he screws. This whole unit of screws+pin is turning around after playing with a knife for a while.
 
vininull said:
This whole unit of screws+pin is turning around after playing with a knife for a while.
Click to expand...

If it is still turning after you tightened the screw, you should send it in.

After I discovered this design, I do check the pin alignment under the light every now and then to make sure it has not moved. I don't use it often enough so it will take a while for me to tell if it will move.
 
Sounds like a pain. I was thinking about a 25, but I think I'll stick to my 21. You would think that both screws going in and putting tension in opposite ways would keep it straight and not able to turn one way or another.
 
I have both the press fit pin, and the version with screws on both sides. I haven't taken down the two screw version yet but if yours is hitting it needs to be sent in for repair.

Not every car comes out perfectly when it rolls down the line, nor is every appliance built correctly, humans make mistakes and its humans who assemble these fine knives. Give him a chance to make it right, the knife is worth it.

Don't get me wrong, I get upset when things are messed up too, with my luck I get a lot of that kind of stuff, but, you can't let yourself stress out about things that you can't control, send it in and they'll take care of you.

Good day to you.
 
I do have the newer version. And I have taken it apart to clean and lube. I really didn't pay any attention to the stop pin or anything else. And put it back together with no problems. :)
 
I have a press fit version so I dont have these problems. But instead of coming on the forum and telling people there's a flaw why not contact the maker first and have them fix the problem your having?
 
Maybe if enough people send their knives in for repair CRK will get the message and change the design.
 
That does seem like an odd design choice, I can't see any reason the first arc of the the blade tang itself that needs to pass the stop pin flat could not be reduced by what 0.1" at most to clear it without having to notch the pin, except it looks like the detent might ride very close to the edge there. The ceramic ball lock bar certainly isn't using that bottom 0.1" of tang for lock up. If a notched pin had to be used I'd think ideal solution would be to notch the pin/handle interface as well so that the pin cannot spin in the handle, even if a screw should loosen, but I'm not a knife maker and it would probably increase costs and time in manufacturing. Plus if yours is loose even with the screws tight well that's a double whammy.

It reminds me of the "multi-flats" stop pin BM tried on the 760 where guys were rotating it to change the lockup and some rotated on their own, but I've seen more than one of them where that pin had rotated and screwed up the lockup or disabled the knife. Any non-round stop pin seems to cause more problems than they are worth, Murphy seems to enjoy messing with them.

On the plus side there's no doubt that CRK will fix the problem for you, and while every company at every price point has problems I'd have to say that for $450+ I'd hope a rotating stop pin would not disable my knife. I'm not sure how much it would cost in manufacturing to either allow the use of a round pin or ensure the notched one cannot move but I'd think at that price point owners would pay a bit more for the peace of mind.
 
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