Compression lock quesion

T

TrojanSteel

Joined
Jul 22, 2013
Messages
381
For those of you that have been using a compression lock knife for while: how far has your compression insert shifted along the compression surface, if at all?
 
TrojanSteel said:
For those of you that have been using a compression lock knife for while: how far has your compression insert shifted along the compression surface, if at all?
Click to expand...

I took my Superleaf apart last week to measure for some Phosphor-Bronze washers and noticed there is some distortion on the lock bar face. Should have taken a photo but...
I'm not the first owner so how it was used by the previous owner is unknown. Probably from excessive flipping open is my guess. Besides that the lock is still at 40% maybe and is solid as can be. No reduction in the performance of the lock at all. Definitely one of my favorites.
 
I flip my PM2 open endlessly and I haven't noticed any movement at all in the lock bar...still 30%-40% lock up.... & rock solid.
 
Cool, well just for reference, here's a new PM2 lockup:


9492468468_33b8605ac7_z.jpg
 
Last edited:
I've been carrying my PM2 as a true EDC for now almost 20 months, it still locks up like it did brand new and I haven't noticed any discernible movement of the lockbar.
 
Impressive! Does this mean that they developed the first OCD compatible knife lock?
 
Fancier said:
Impressive! Does this mean that they developed the first OCD compatible knife lock?
Click to expand...

Strangely, I had an overwhelming desire to get up an wash my hands again after reading that bit of info.
I keep flipping my PM2 open also. The compression lock feels great.
 
It certainly isn't damage-proof. I bought a used Yojimbo that looked like it had never cut anything, but the locking leaf traveled all the way across to the right liner and the blade had considerable vertical play. When I tore it down I found the top and bottom of the lockbar were mushroomed, the holes in the liners for the stop pin were oblong, the stop pin was flattened where the lockbar contacted and both flattened and mushroomed where the blade impacted. That was fun to repair, but it locks up like new now.
 
yablanowitz said:
It certainly isn't damage-proof. I bought a used Yojimbo that looked like it had never cut anything, but the locking leaf traveled all the way across to the right liner and the blade had considerable vertical play. When I tore it down I found the top and bottom of the lockbar were mushroomed, the holes in the liners for the stop pin were oblong, the stop pin was flattened where the lockbar contacted and both flattened and mushroomed where the blade impacted. That was fun to repair, but it locks up like new now.
Click to expand...

I guess you can't send that in, but that sounds strange for ANY liner type lock. Doesn't it? Mushrooming? That's intense. How do you even fix that?
 
ALLHSS said:
I guess you can't send that in, but that sounds strange for ANY liner type lock. Doesn't it? Mushrooming? That's intense. How do you even fix that?
Click to expand...

I suspect the previous owner did a lot of hard inertial openings and a lot of spine whacking. Repairs were done Sheetmetal 101 style. Hammer and anvil to flatten out as much as possible, files to clean up rough edges, centerpunch to displace metal to turn oval holes into round holes. Not that big a deal to me, but I've been fabricating things from steel since I was a kid, and I'm a Senior Citizen now.
 
Straight out of the box, my lock bar was flush with the blade edge. After a day or two of use, it moved to where it is now, and that was two months ago.



The ONLY mechanical issue I've had with the lock was when a grass seed got in between the lock bar and the G-10, preventing the lock from fully disengaging. All that was accomplished by this, was the blade was hard to open. I quick blow from the opposite direction and the problem was solved.
 
If it's any help, I have a digi-cam & satin Para 1 that I've had for about 4 years now. It used to be a daily carry. Doesn't get that much carry anymore, but she still works like new. The lockbar has never moved from it's original lockup position. Looks about like the 2 pix that are posted. This Para was carried a lot for 2 or 3 years until I got a digi-cam Para 2.

I am, however, a very boring opener. My knives don't ever get flicked, spine-whacked, or dropped open. I just use the factory supplied opening device in the traditional manner.
 
You must log in or register to reply here.
Back
Top