Benchmade Sibert MPR ..interesting feature

Bimmer1

Bimmer1

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Sep 30, 2000
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It looks like the first batch of the Benchmade Sibert MPR is slowly making its way into the hands of Premium Dealers. Someone on another forum posted pics of the one he just received of the first production run.

There is a cool little cut out / notch in the framelock lock bar that looks like it hits up against the side of the tang/lock face portion and prevents the lock from slipping too far to the right as wear sets in.

Pretty cool feature!

You can see it here in one of his pics at the end of the lockbar.
 
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That's pretty cool I didn't know the MPR was going to have that, didn't see it in the prototypes. I've seen that feature on several knives in the past, I believe the Alias had it. I'm pretty sure the new Spyderco Military TI has something similar as well.
 
I'm surprised that this feature hasn't been used before, or hasn't been used widely. When I first got into knives and learned about the weakness of the liner lock (that it travels to the other side further and further with wear), I wondered why something like this wasn't used to prevent that.
 
Guys, I think I'm having a slow day today! Could somebody please explain to me what this feature is and where on the lockbar it is located? :confused:
Thanks a bunch!
 
you can see on the lock bar that the whole thing doesnt move over, there is part of the lockbar that is stationary so i am thinking that it works somewhat like a hinderer lockstop.
look by the jimping on the lockbar, near that base.
man the more and more i see of this the more i like it, :eek: that is a thick lockbar, and the M390 steel looks interesting.
 
Don’t get too excited over it,

Rumor has it……….. it’s only on the Protos.
 
Actually it has two nice features incorporated into the lockbar. As gundude just explained the g10 overlay acts as a lockbar stop but what the OP was talking about is actually on the lockbar face where it contacts the blade tang. If you hold the knife in the same position as it is in the above picture you will see on the left side of the lockbar face that it steps up a little bit. This means that when the lockbar wears in enough to touch that step in the lockface it will hit it and the lockup will no longer travel to the right with time. The Bradley Alias also has this feature and it works very well. You might think that this kind of feature would promote play because after it hits the step it doesn't go over any furthter but I've had my Bradley Alias 1 for about 6 months now and it hit the step right when I receieved it and it is still solid as a vault. Those are two excellent features I think I may just have to sell my mini rukus duplicate for this one!
 
I could be wrong?

---------------------------------------
After rereading 3 long threads :rolleyes: from a mystery forum very much associated with THIS knife.
I can confidently say that “I am indeed incorrect.”
1oops.gif


Please amend the permanent record to reflect this correction.
sorry.gif


Thank you
 
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Doc Pringles said:
Don’t get too excited over it,

Rumor has it……….. it’s only on the Protos.
Click to expand...


The prototype did not have this feature and the one I posted a picture of was marked # 23/1000 First Production Run. The guy just got it. Looks like a feature that will at least be on the first run and most likely will stay on the regular production run as well.

Only the premium dealers are receiving their first 25 of these now and most of those (if not all of those) will go to customers who placed their pre-orders first. Everyone else is going to have to wait until May or so before receiving theirs.
 
I'm having trouble seeing how this really provides any type of advantage over a normal frame lock. In either case, once the lockbar face has worn enough, it will go as far to the right as the design allows and blade play will develop shortly afterward. From what I can tell, this really just shortens the amount of time for that to happen because it isn't giving the lock as much room for wear before it can't go any further. Can someone enlighten me?
 
Kaizen1 said:
I'm having trouble seeing how this really provides any type of advantage over a normal frame lock. In either case, once the lockbar face has worn enough, it will go as far to the right as the design allows and blade play will develop shortly afterward. From what I can tell, this really just shortens the amount of time for that to happen because it isn't giving the lock as much room for wear before it can't go any further. Can someone enlighten me?
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i also.

:confused:
 
It looks to me like it gives adequate space to allow the lockbar to go to it's maximum allowable position to provide a solid lockup. I don't know that it would necessarily hasten the process any. I would think that once the lockbar goes all the way to the right side (even if this notch does not allow it....but speaking of other framelocks) that it would also develop blade play and not be considered all that secure. It almost looks as if once this lockbar gets to it furthest effective position towards the right (when excessive wear occurs) that this "might" keep it in a usable secure locking position longer (if there is enough tension) than it would be if it slipped all the way over to the right. Of course many framelocks still are secure when the lockbar slips all the way to the right......but not always.
I guess only time will tell if this is an effective way to keep the lock working for a longer period of time or if it is just an idea that looks good in design theory but does not give any added benefit in practicality.
 
Or perhaps the notch acts as some sort of simple safety mechnism that may not prevent the blade from developing play with lock wear..... but will keep the blade in the open position and not allow the lock bar to slide too far over and cause a "complete failure" of the lock and closure of the blade by accident.
 
Kaizen1 said:
I'm having trouble seeing how this really provides any type of advantage over a normal frame lock. In either case, once the lockbar face has worn enough, it will go as far to the right as the design allows and blade play will develop shortly afterward. From what I can tell, this really just shortens the amount of time for that to happen because it isn't giving the lock as much room for wear before it can't go any further. Can someone enlighten me?
Click to expand...

This was my thinking before I got my Bradley Alias but now 6 months after the lockbar hitting the notch I'm seeing that it does not induce blade play. In fact the mating surface of the blade tang is sort of a half moon shape instead of a flat slant like most and when the blade tang hits the notch in the lockbar its also resting on the bottom of the tang. Its hard to explain without pictures but it the side of the blade rests on the lockbard "notch" and the bottom of the blade contacts the framelock in the conventional way. Also it starts to wear into the notch after a while and provides more longevity. It seems like it would induce blade play but from what I've seen on mine and what others have said it just isn't true.
 
Kaizen1 said:
I'm having trouble seeing how this really provides any type of advantage over a normal frame lock. In either case, once the lock-bar face has worn enough, it will go as far to the right as the design allows and blade play will develop shortly afterward. From what I can tell, this really just shortens the amount of time for that to happen because it isn't giving the lock as much room for wear before it can't go any further. Can someone enlighten me?
Click to expand...


I thought the same thing.
Why would they do this? To me once the lock bar reaches the point to where it cant travel any further to the right, this will allow blade play quicker.
 
nevermind35 said:
This was my thinking before I got my Bradley Alias but now 6 months after the lockbar hitting the notch I'm seeing that it does not induce blade play. In fact the mating surface of the blade tang is sort of a half moon shape instead of a flat slant like most and when the blade tang hits the notch in the lockbar its also resting on the bottom of the tang. Its hard to explain without pictures but it the side of the blade rests on the lockbard "notch" and the bottom of the blade contacts the framelock in the conventional way. Also it starts to wear into the notch after a while and provides more longevity. It seems like it would induce blade play but from what I've seen on mine and what others have said it just isn't true.
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6 months of use should not result in excessive lock bar wear.

i am curious to know how this system will hold up over several years of use.
 
Bimmer1 said:
It looks to me like it gives adequate space to allow the lockbar to go to it's maximum allowable position to provide a solid lockup. I don't know that it would necessarily hasten the process any. I would think that once the lockbar goes all the way to the right side (even if this notch does not allow it....but speaking of other framelocks) that it would also develop blade play and not be considered all that secure. It almost looks as if once this lockbar gets to it furthest effective position towards the right (when excessive wear occurs) that this "might" keep it in a usable secure locking position longer (if there is enough tension) than it would be if it slipped all the way over to the right. Of course many framelocks still are secure when the lockbar slips all the way to the right......but not always.
I guess only time will tell if this is an effective way to keep the lock working for a longer period of time or if it is just an idea that looks good in design theory but does not give any added benefit in practicality.
Click to expand...

I haven't read anything about frame locks becoming less secure just because the lock has traveled over to the right as far as possible and developed blade play. But even if it were, I'm having difficulty seeing how this change would affect that.
 
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