Spring lifespan - assisted opener

T

topherO

Joined
Aug 29, 2007
Messages
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Hi all, not sure if this is the correct place on the forum to post this question but it seemed like the closest fit.

I'm an AO nut (autos are illegal here so it's as close as I can get). I've got 2 nitrous strykers and a 580 barrage (I like Benchmade). I just got the barrage a few days ago and it's my first AO with a spring (the strykers use torsion bars that I can't imagine would ever wear out) -- I'm wondering if anyone knows how long these springs tend to last? Do they wear out? I play with this knife all the time and I'd hate to think I was reducing the life span of the opening device.

Thanks very much!
 
None of my coil spring based knives have worn out, except one that rusted and snapped but that wasn't really wear. I have had a kershaw torsion bar snap. They sent me a new one very quickly. Took it 3 years frequent of daily use.
 
i doubt you would wear out the action on the nitrous stryker, it uses a tortion bar built into the liners, if you constantly play with the 580 you might wear out the omega springs, but if you did, benchmade would take care of it.
 
Thank you very much for the replies! How many opens/closes would you think you might get before the spring(s) began to degrade. It's weird: I've looked all over Google for info like this and can't find anything.
 
I can't speak for BM, but Kershaw tests their torsion bars to 10,000 cycles (one open, one close per cycle). I've had a Ti ZDP Mini Cyclone in my pocket almost daily for a little over 3 years and no problems. But like anything mechanical, it can and will wear out or break prematurely.
 
I've broken a couple of torsion bars on Kershaw Leeks, but I'd bet they lasted the full 10,000 cycles. I wouldn't hesitate to buy another one.

The good new with Leeks is that the torsion bars are very easy to replace. Kershaw will send several extra torsion bars to you if you call its customer service line.

I have no idea whether other companies' AO knives are as easy to work on.
 
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