Liner Locks Slipping/Failing?

Yes Messy, that could help it a bit. I think it was B_110 that said to keep the frame and liner locks in the deployed position to improve the percentage rate of engagement.

This one is more of what WillTheBarb is saying...this is more of a physical limitation on the existing setup. To get the frame lock to engage more would require some tooling. And I ain't no Binford Tools kine guy.

If you look at the blade butt surface where the lock engages, you can see that it is angled. Not straight across.

My two 298GY ASAP knives are by far the best at the engagement rate. 100% of the lock is well to the middle or far side of the blade butt (which is cut straight and not angled like the TNT). They are the second and last knives in the pic at the start of this thread. Thanks to Larry for those two superb knives.

Here's a pic of the deployed Buck Mayo TNT:
.
130959575-M.jpg
 
Goose,,,
My TNT deploys to where the outer edge of the frame lines up even with the left side of the blade, as you look down at it. In other words, frame is fully contacted with the blade. Which is about half again farther over than yours.

Yours may need to be tweaked... But, I kine of doubt it is going to fold on you with normal use. That one probably isn't one of your heavy users.

With all the liner locks I have. Only two have ever folded on me with use. One little cheepo chinese junker that I was using improperly in the first place, and one Very High Dollar (non Buck) . But the high dollar one, well, I was chunking it at a tree just to see if I could stick it. Never did and each time I picked it up, it was semi folded. I thought that strange so chunked it a few more times. Hard to see just how it was hitting the tree to be able to determine why it was folding. But it was....every time....

and no,,,I haven't chunked any more liner or frame lockers at trees.

just my 2 centavos worth....
 
Here are some pics I thought were interesting.

Here is the liner lock engagement system for a Idaho (2005) 889SBMF and a 889LE (respectively):
133898830-M-2.jpg
133898839-M-1.jpg





Note that the SBMF portion of the tang that hits the lock is angled from one end to another. It is slight, but it's there. I know that the pic being a bit crooked doesn't help...but it's a smooth grind/edge from side to side.

On the LE there is a cut or channel for the liner lock to engage (that is NOT a shadow you see in the engagement area).

Also, note the slight gap in the LE liner spacer where it mates with the right liner as compared to the SBMF.

So, I pass this on for observation and comments as my Buck brethren find appropriate.
 
Buckaholic said:
Here are some pics I thought were interesting.

Here is the liner lock engagement system for a Idaho (2005) 889SBMF and a 889LE (respectively):
133898830-M-2.jpg
133898839-M-1.jpg





Note that the SBMF portion of the tang that hits the lock is angled from one end to another. It is slight, but it's there. I know that the pic being a bit crooked doesn't help...but it's a smooth grind/edge from side to side.

On the LE there is a cut or channel for the liner lock to engage (that is NOT a shadow you see in the engagement area).

Also, note the slight gap in the LE liner spacer where it mates with the right liner as compared to the SBMF.

So, I pass this on for observation and comments as my Buck brethren find appropriate.
Click to expand...
Goose... O.K. I reread your post.I was talking about the space on the LE , that you had already said.
Sorry The saltwater is getting to my brain. It almost looks like the washer on the right side was not
need.Then the spring probley would have locked it alright.
Jeff
 
Ya might be right Jeff.
I looked at the other two spacer gigs on this pup and they are pretty flush/tight...no gap.

Can't tweak that w/o taking off the scales though...no exposed screws to screw:


133412301-M-1.jpg
 
Goose just a heads-up. If you look close at the liner spring you'll see that on the inside surface against the blade, it has a stamped boss about the size of the tip of a ballpoint pen. I believe that it's to keep the entire edge of the spring from contacting the side of the blade during deployment. And to make the blade movement smoother and avoid scratching the blade.

Anyway you need to allow for this "bump" if you decide to adjust the spacer.
 
Thanks Mike. I kine of thought that's what it may be for. At first glance I was wondering if it had anything to do with the hole in blade at the tang.
On the 889SBMF the hole goes through the tang. On the LE it's a divot.
Any idea on what that is for? Am thinking it is something for the mfg process (?).
 
I think that boss also engages that hole or dimple in the blade and acts as the closure detent. Gives it that little snap when you close the blade. Not much retention but enough to keep the blade from dropping open I guess.
 
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