just thinking a spring stored relaxed will last longer?I doubt it makes much difference.
They are shipped to the retailer with the blade closed. That is good enough for me.
Like I said, I doubt if it makes much difference. Especially considering that the spring is under tension ether way, open or closed.just thinking a spring stored relaxed will last longer?
You must know more about this than I do. I figured that there would be some tension on the spring all the time.On a torsion bar type of assisted opener. The bar is not under stress when open or closed. It is the action of opening, or closing the blade that really provides the tension.
You must know more about this than I do. I figured that there would be some tension on the spring all the time.
I guess it just depends on the knife design and the type of spring that’s used.
I’ve done that. A Kershaw Echelon. Much nicer knife without the spring. Mine rattled even with the grease.Just take apart a Speedsafe Kershaw. Actually all you usually need to do is remove one scale to expose the mechanism. The reason why there is a bit of grease in there is so the bar doesn't rattle while the blade is closed.
Just take apart a Speedsafe Kershaw. Actually all you usually need to do is remove one scale to expose the mechanism. The reason why there is a bit of grease in there is so the bar doesn't rattle while the blade is closed.
would you happen to have a 0350 spring in that box of yours that you would be willing to post?happy to payOof, some interesting opinions here. Here's mine:
Torsion bar assists are under slight tension while closed, and are completely free when open (that's why Kershaw/ZT put grease in their handles to hold the springs from rattling while their AO knives are open). The engineering answer here is that, while cycling from high to low stress does cause the majority of fatigue damage to elastic materials like steel, there's also creep to account for with materials loaded for long periods of time, and this can result in additional strain, and therefore damage, to a spring.
Whether this is matters for most users in the context of the lifespan of a knife is questionable. But there is some difference, even if it's largely academic in this case.
To (sort of) answer your actual question, I don't leave assisted knives stored in any way because I always pull the springs out and throw them in a box. If I did store an assisted knife, it would be closed.
Give Kershaw a call and they'll send you a spring free of charge . A great companywould you happen to have a 0350 spring in that box of yours that you would be willing to post?happy to pay
for spring and post
Oof, some interesting opinions here. Here's mine:
Torsion bar assists are under slight tension while closed, and are completely free when open (that's why Kershaw/ZT put grease in their handles to hold the springs from rattling while their AO knives are open). The engineering answer here is that, while cycling from high to low stress does cause the majority of fatigue damage to elastic materials like steel, there's also creep to account for with materials loaded for long periods of time, and this can result in additional strain, and therefore damage, to a spring.
Whether this is matters for most users in the context of the lifespan of a knife is questionable. But there is some difference, even if it's largely academic in this case.
To (sort of) answer your actual question, I don't leave assisted knives stored in any way because I always pull the springs out and throw them in a box. If I did store an assisted knife, it would be closed.
Two things wear out springs.
1 cycling them
2 forcing them past their limits.
It's the movement / cycling that fatigues a spring NOT storage in tension .
I have pistol magazines from WWII , still work fine , stored loaded .
No. As long as the spring is not at or near it’s elastic limits, I will be fine pretty much forever. I have seen video of pistol magazines loaded for approaching 100 years that function fine.