Good&Fruity
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Aha! So there are other posters here who've experienced spring set. I saw it first hand with the Korean mags.
According to Brownells, spring set may be true after all?
- Thread starter Good&Fruity
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Good&Fruity
Member
- Joined
- Nov 5, 2008
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- 227
Interesting test they did in regards to spring set.
http://www.brownells.com/.aspx/lid=...t_Between_Different_Types_of_Spring_Materials
http://www.brownells.com/.aspx/lid=...t_Between_Different_Types_of_Spring_Materials
JohnBT
Member
From the Brownell's link: "After 50 Cycles"
Are we discussing spring set from using spring like Brownell's did or spring set from letting a spring remain compressed for an extended period?
In any case, is 0.157" even significant when the new spring measured 6.456"? That's between 1/8" and 1/4" out of 6.4".
Their result was:
50 Cycles _
Chrome Silicon
New 6.456"
After 6.299"
Set 0.157"
Are we discussing spring set from using spring like Brownell's did or spring set from letting a spring remain compressed for an extended period?
In any case, is 0.157" even significant when the new spring measured 6.456"? That's between 1/8" and 1/4" out of 6.4".
Their result was:
50 Cycles _
Chrome Silicon
New 6.456"
After 6.299"
Set 0.157"
JohnBT
Member
"spring set. I saw it first hand with the Korean mags. "
I still say you experienced spring failure. The mags didn't work for very long, did they?
I still say you experienced spring failure. The mags didn't work for very long, did they?
The truth to the matter is that a properly designed and manufactured spring that isn't pushed beyond its limits will not set or creep or whatever term you like. That says NOTHING to if manufacturers are properly designing and manufacturing springs. Any company can put any spring they desire into any mag design they desire. Doesn't mean it will work or won't. I wouldn't doubt that many mags never have set from continuously being compressed as the spring was made well and never pushed beyond it's limits. On the other hand, I wouldn't doubt that between manufacturing processes and manufacturers pushing the spring to its limits that some springs are over-compressed when fully loaded.
It's kinda like saying nobody has ever had a lemon rifle come out of any factory. It happens to everyone once in a while, some produce fewer that have problems and others produce more that have problems.
It's kinda like saying nobody has ever had a lemon rifle come out of any factory. It happens to everyone once in a while, some produce fewer that have problems and others produce more that have problems.
ipscshooter
Member
Even well designed compression springs will take a set. It is called "initial set". In critical applications the springs will be compressed during manufacture prior to shipping so that the "intitial set" will have occured.
To do so with firearm magazine springs would drive the price out of reach for most buyers, and if the mag/spring combo is designed properly it is generally not an issue. The spring will take it's "initial set" and then should be operating within it's design parameters for x cycles, depending on operating environment, i.e. temperature, cycle speed, etc..
If the spring is not stressed beyond its design limits it should not creep at the temperatures a typical magazine is subject too.
That is not to say that it will not wear out due to cycling, but keeping a magazine loaded that has a properly designed spring should not be an issue. That is one reason I seldom stray from using OEM magazines, with a few exceptions. The real problem is poorly designed springs, for the application, using inferior materials. DON'T GET CHEAP buying magazines.
Just my opinion, I could be wrong.
To do so with firearm magazine springs would drive the price out of reach for most buyers, and if the mag/spring combo is designed properly it is generally not an issue. The spring will take it's "initial set" and then should be operating within it's design parameters for x cycles, depending on operating environment, i.e. temperature, cycle speed, etc..
If the spring is not stressed beyond its design limits it should not creep at the temperatures a typical magazine is subject too.
That is not to say that it will not wear out due to cycling, but keeping a magazine loaded that has a properly designed spring should not be an issue. That is one reason I seldom stray from using OEM magazines, with a few exceptions. The real problem is poorly designed springs, for the application, using inferior materials. DON'T GET CHEAP buying magazines.
Just my opinion, I could be wrong.
ALL new springs will take an initial "set" once compressed and allowed to remain compressed for a period of time.
Once the initial "set" is determined, the spring will not "set" any further but can be compressed to a greater degree. When compression is released the spring will return to the initial "set".
Springs wear out with repeated compression and relaxation cycles.
Springs can remain compressed for long periods of time without experiencing any wear factors.
Cheap, poorly manufactured springs will naturally wear out faster than quality produced springs regardless of material construction due to poor heat treating, thinner than specified wire diameter, and corrosive effects accelerated by incorrect material compositions and blending.
Once the initial "set" is determined, the spring will not "set" any further but can be compressed to a greater degree. When compression is released the spring will return to the initial "set".
Springs wear out with repeated compression and relaxation cycles.
Springs can remain compressed for long periods of time without experiencing any wear factors.
Cheap, poorly manufactured springs will naturally wear out faster than quality produced springs regardless of material construction due to poor heat treating, thinner than specified wire diameter, and corrosive effects accelerated by incorrect material compositions and blending.
The usual "facts". Often repeated.
My experiences were real, there are no absolutes, and saying it can't or won't occur just from longterm compression remains untrue.
I also would not make the claim that Glocke uses cheap spring wire.
This can be argued indefinitely, the most accurate conclusion is that mag spring set normally doesn't occur from prolongued compression, and shouldn't, but can.
Denis
My experiences were real, there are no absolutes, and saying it can't or won't occur just from longterm compression remains untrue.
I also would not make the claim that Glocke uses cheap spring wire.
This can be argued indefinitely, the most accurate conclusion is that mag spring set normally doesn't occur from prolongued compression, and shouldn't, but can.
Denis
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