Question for Sal

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proguide

Joined
Mar 26, 2004
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I was wondering if there has been any stress tests done on the lock spring of the manix or chinook? Repeat open and closings to find what the life span of the spring is before it starts to effect lock up. I don't mean lock failure just blade play from repeated spring stress. I know how extensive your research is, I was just wondering. I've had my Manix for a couple of months now, and it's the one knife that I just can't put down. It's the perfect knife to go to work with.

Thanks for the input.
 
That's a pretty interesting question. For what it's worth, my first generation Endura (zytel clip, G2 steel) has been opened and closed many thousands of times over the last 8-10 years and lockup is just as good or better than when it was new. Spring tension hasn't changed at all if memory serves.
 
I'd have thought the steel would handle that small amount of stress for an indefinate amount of time. Aluminium wouldn't if I remember correctly
 
I don't know how long it takes for the spring to fail, but I do have a Delica for a few years now and believe me it's been hardly used (and abused). It was opened / closed at least a few thousand times and the spring has no sign of fatigue. In fact, I really think the spring will be the last piece standing in the poor knife. The clip already has been replaced with a wire one, and the blade... oh God, the blade almost lost its teeth :(
 
Proguide,
Just wanted you to know that Sal is out of the office until the end of the month. So, it'll be a bit before he sees this thread.

Kristi
 
Looking at the spring and how little it travels when you push the release, I kind of doubt that you will wear it out anytime soon. And even *if* it breaks after many years....its really easy to fix.
 
Hi Proguide. Millions of cycles should not be a problem. We've not had a problem with spring weakening on any lockback, ever.

sal
 
Sal Glesser said:
Hi Proguide. Millions of cycles should not be a problem. We've not had a problem with spring weakening on any lockback, ever.

sal
Click to expand...

Hey, Mr. Glesser! :thumbup: How about wear on the "tooth" of the lockbar (the part that engages the notch in the blade tang on a lock-back, or "front-lock")? Does that take a while as well, or is it generally a lot faster? Thank you, sir!

Sincerely,
3Guardsmen
 
Hi 3guardsmen,

anything that rubs will eventually wear, but we use hardened steels and that area has not been a problem.

sal
 
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