BM Nimravus sheath Lock problems

T

Tripz

Joined
Apr 15, 2006
Messages
34
Does anyone have any problems with their nimravus sheath thumb locks? I notice mine does not lock fully (feels like it does not engage at all) and the knife can still be drawn from the sheath with the lock on or off. I could try modifying it (cut groves in the lock so that it actually meshes with the ridges on the knife) but am told this will void my warranty and it would be better off to send it in to Benchmade. Anyone else have this problem? Thanks.
 
hmm...

that really stinks, tripz. i would send it back to benchmade for a repair (i know, i know, it sucks to have to do that). benchmade has a great customer service dept. and will certainly clear the lemon up for you in a quick and professional manner. i suggest you give them a call (800-800-7427) and request instructions.

i never had a nimravus with that type of locking sheath, but i did used to have a H20 (an old, old one) that had a sheath operating on the same principle. the lock should engage down on the thumbramp tightly and secure.
 
I have a Benchmade 100SH2O that has a similar (possibly the same) sheath design with the thumb-operated "lock."

I found that it does not seem to present any impediment whatsoever to even a moderately vigorous pull on the draw. I honestly don't know what that "lock" is supposed to really accomplish.

-Jeffrey
 
Hey Tripz...

All of the Nims that have crossed my bench that had these sheath, none and I mean none of them worked..I've seen brand new sheaths out of the box that didn't work...

I can make you a sheath for that knife that gets rid of all that nonsense for you....

If you need a picture,,let me know,, I'm working on one right now...

ttyle

Eric
O/ST
 
thanks for the input guys, i've heard about BM's customer service being up there, i guess i'll send it out one of these days to see what can be done.

Normark, check your email!
 
I concur with Eric that the sheaths that Benchmade makes for the Nimravus (and Nim Cub) have a pitiful track record. They've done several revisions of the design since they first stated producing the Nims, and none of them have performed well. Gotta say thanks to BM though, 'cause we can always count on doing a number of these every year.
 
I was playing around with my nim today and upon closer inspection of the thumb lock with it in the "on" position, i noticed that it would actually flip up (off) once the knife was drawn. The thumb lock rather just rests on the thumb ridge/ramp (like a wedge) but never fully engages. I am not sure if it's supposed to be this way or not. To clearify what i mean, with the knife out of the sheath, you can flip the thumb lock up and down and actually feel and hear it sorta "click" into the on and off position. With the knife back in the sheath, u can verify the safety off buy feeling and hearing the same click but when i try to apply the safety, it rather just rests on the thumb ridge on the knife, no feeling of engagement. Now what i did was simply tighten the screw on the thumb lock pivot and now the blade locks into the sheath tight! However, there is still no definate feeling of engagement other than the lock wedge pushing down on the knifes thumb ramp which i assume might in fact be normal. (i will call BM on monday to verify wheather this is how it's supposed to be or not) I assume, the only problem i had, was that the screw wasn't tight enough! *slaps himself in the head* Now the thumb lock feels more secure (it's not as easy to flick up and down which was a worry b4) and as i said, the blade locks into the sheath tightly and cannot be drawn with the lock on. ;)
 
Hey Guys....

AZ...

azranger said:
I have noticed the same problem, I plan to send it back to BM.
Click to expand...

You'll only get another one back that doesn't work either....

Like I said earlier, the vast majority of these thumb locks are not working.
I wouldn't rely on one working,, even if it was working,,if that makes any sense...

ttyle

Eric...
 
Hey MIke...

LOL..

Mike Sastre said:
I concur with Eric that the sheaths that Benchmade makes for the Nimravus (and Nim Cub) have a pitiful track record. They've done several revisions of the design since they first stated producing the Nims, and none of them have performed well. Gotta say thanks to BM though, 'cause we can always count on doing a number of these every year.
Click to expand...

I remember people complaining about the first round of sheaths, then when the second round of sheaths came, they were wishing they still made the first round. LMAO

I think the thumb locks on these sheaths are like decals..Don't do much more than look cool...


However like you say..

Hey I'm not complaining.. I personally think they should leave them just as they are.... :D

ttyle

Eric....
 
Hey Guys...

Tripz writes...
"Now the thumb lock feels more secure (it's not as easy to flick up and down which was a worry b4) and as i said, the blade locks into the sheath tightly and cannot be drawn with the lock on."

Yes this is true,, but when you draw the knife the knife is so tight in the sheath that it rides up on the draw..

After awhile your screw will loosen and the lock with be sloppy again.


ttyle

Eric...
 
Normark said:
Yes this is true,, but when you draw the knife the knife is so tight in the sheath that it rides up on the draw..

After awhile your screw will loosen and the lock with be sloppy again.
Click to expand...

actually, by tightening the pivot screw, it just tightens the thumb lock. It has no effect on how the knife draws from the sheath itself. With the lock engaged, the knife cannot be withdrawn from the sheath. With the lock dis-engaged, the knife can be drawn from the sheath normally. As for the screws, a lil loctite and all is good.

Any of you guys with this sheath problem, give it a try and lemme know. I mean who knows? it could be just mine that this method works on. BUT, i do know, my knife is NOT going back to BM anymore because all is good. :)
 
Hey Tripz....

Yaa normally for those sheaths they ride up on drawing the knife...

As for the thumb lock..
When it is tightened,, and the lock is engaged,, you Can't pull the knife out ??

If so,, you've either got one that is few and far between or they've redesigned the thumb lock..

All the ones I've handled,,it didn't matter what you did to them with the lock engaged, and you held it down, the knife would still come out of the sheath easily...

ttyle

Eric....
 
Understand it doesn't fit well because the lock-latch notches were moulded to fit the early batches of Nimravus. It never does merge into a solid lock-up with the later or current batches that you all seem to have now. Problem can be solved somewhat (for some) by repetitively engaging the locking latch with a sturdy dose of extra hard but careful depressing. This of course null's the warranty.
 
The thump thing on mine is bad too, but the fit of the sheath itself is well. Better than some Kydex sheathes i have seen. Nothing to really care about, if i can´t expect to get anything better.

I would stay with the old sheath, because you can easily carry the large Nim in your back pocket.
 
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