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recoil spring question

#1 User is offline   chefcs5 

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Posted 19 November 2009 - 04:34 PM

Ok so I have a pretty much stock glock 17. I recently shot one with a 13lb spring that was using almost exactly the sam load as me and I liked it.

so I orderd the ismi 13lb clock spring from brownells
I put it on the factory guide rod as I wanna stay production
It feels like a lot of slop in the spring .. almost like the spring is too long.
I do notice a small reduction in the pull back but not great. but it seems like the spring is all ofver inside of there.

Any ideas?
GOD, and Gaston Glock have provided you with a fine precision firearm! If it quits working after you mess with it, you've got nobody to pray to and you're going to need SOMEBODY to MIRACLE your friggin' bullets downrange, dummy! Don't mess with GOD or GLOCKs


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#2 User is offline   Pharaoh Bender 

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Posted 19 November 2009 - 06:06 PM

The recoil spring should have no effect on the trigger pull UNLESS your striker spring is overpowering the recoil spring. You can tell if this is happening if you pull the trigger back slowly and it slightly pulls your slide back.

Modifications to the trigger, trigger spring, striker, striker spring, striker safety and its spring...these are the things that change the dynamics of the trigger pull.
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#3 User is offline   chefcs5 

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Posted 19 November 2009 - 07:36 PM

I guess I didnt explain well.. when I meant pull back I meant when I pull the slide back it had no effect on the trigger. sorry
GOD, and Gaston Glock have provided you with a fine precision firearm! If it quits working after you mess with it, you've got nobody to pray to and you're going to need SOMEBODY to MIRACLE your friggin' bullets downrange, dummy! Don't mess with GOD or GLOCKs


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#4 User is offline   JohnGaultsGun 

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Posted 19 November 2009 - 08:10 PM

As long as the spring is not interfering with the operation of the slide and that it goes back into battery, there should not be a problem. The reason why you change to a lower recoil spring is to increase slide cycle speed and thus have less perceived recoil. This will also allow you to drop your power factor and still have your gun function. The flat wire ismi springs seem to be heavier than advertised ... at least to me but I have no way to check the actual spring tension.
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#5 User is offline   Zerwas 

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Posted 19 November 2009 - 08:11 PM

View Postchefcs5, on Nov 19 2009, 05:34 PM, said:

Ok so I have a pretty much stock glock 17. I recently shot one with a 13lb spring that was using almost exactly the sam load as me and I liked it.

so I orderd the ismi 13lb clock spring from brownells
I put it on the factory guide rod as I wanna stay production
It feels like a lot of slop in the spring .. almost like the spring is too long.
I do notice a small reduction in the pull back but not great. but it seems like the spring is all ofver inside of there.

Any ideas?


Are you sure it is a 13# spring for the Glock and not for a 1911 pistol? May want to double check that...
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#6 User is offline   chefcs5 

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Posted 19 November 2009 - 08:55 PM

the package says ismi 13lb glock spring but other than that I wouldnt know the diffrence.

thanks for the info so far guys
GOD, and Gaston Glock have provided you with a fine precision firearm! If it quits working after you mess with it, you've got nobody to pray to and you're going to need SOMEBODY to MIRACLE your friggin' bullets downrange, dummy! Don't mess with GOD or GLOCKs


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#7 User is offline   Greg Bell 

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Posted 19 November 2009 - 09:10 PM

I run a 13lb ismi on a glock rod with 3 coils clipped. I change the spring for good measure at about 3,000 rounds.
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#8 User is offline   Duane Thomas 

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Posted 19 November 2009 - 09:44 PM

Quote

The reason why you change to a lower recoil spring is to increase slide cycle speed and thus have less perceived recoil. This will also allow you to drop your power factor and still have your gun function.

The reason we drop recoil spring weight is because much of the rearward push, and resultant muzzle flip, we experience when firing an auto pistol is caused by the resistance of the recoil spring as the rearward rocketing slide compresses it. Lessen the amount of energy required to do that, you lessen perceived recoil and muzzle flip. With a lighter recoil spring, if you think about it, the gun should cycle at the same speed. While it may - or may not - come to the rear a tiny bit faster, there's also less energy driving it forward, so it should all balance out. Actually, my subjective impression is that a gun with a heavier recoil spring cycles faster, but I'll be the first to admit I may be interpreting "snappier recoil" as "cycles faster".
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#9 User is offline   Lawdawg112 

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Posted 23 November 2009 - 09:26 AM

I run an ISMI flat wire spring in my G34 with two coils clipped and it runs great with factory 147, 124 and 115's in WWB and American Eagle. I tried a Wolff 12 and it worked well, but it seems longer and is harder to install. GockWerk is coming out with their recoil springs sometime soon and there supposed to be color coded by weight and a smaller diameter so they don't bind as much on the rod as the Wolff ones do.


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#10 User is offline   Duane Thomas 

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Posted 23 November 2009 - 10:24 AM

The Wolff music wire Glock springs aren't intended to be run on a stock guide rod, they're meant to be run on Wolff's oversized steel rod. Run the way they're supposed to be, they work great - though I'll admit I run ISMI springs on a stock rod simply become the Wolff spring/rod combo isn't legal in IDPA, and I shoot IDPA with my carry gun.
Pride and fear are emotions, which hope for an outcome. Outcomes take your attention from the present, where the shooting happens, to the future. It is totally impossible to do anything in the future, because it hasn't happened yet. The key to shooting your best is to be present as the witness of the shooting. Do not judge, do not give yourself anything to live up to. We can only shoot as well as we have trained ourselves to shoot. To try to shoot only induces stress. Be content with your current ability. And accumulate practice to improve that ability. Consolidate, build strength where you feel weakness. We cannot raise our ability until we accept our current limitations. Practice dissolves limitations. Matches simply define where the current limits exist. The game of shooting is all about redefining our limits.
- Sam

Amateurs do it til they get it right. Professionals do it til they can't get it wrong.

"It's not the will to win that matters - everyone has that. It's the will to prepare to win that matters."
- Paul "Bear" Bryant

"The only reason why Everest is the highest mountain ever climbed is because it's the highest. If there was one higher, I bet there'd be people trying to climb it."
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#11 User is offline   Nik Habicht 

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Posted 23 November 2009 - 04:33 PM

View PostDuane Thomas, on Nov 23 2009, 12:24 PM, said:

The Wolff music wire Glock springs aren't intended to be run on a stock guide rod, they're meant to be run on Wolff's oversized steel rod. Run the way they're supposed to be, they work great - though I'll admit I run ISMI springs on a stock rod simply become the Wolff spring/rod combo isn't legal in IDPA, and I shoot IDPA with my carry gun.

Duane,
you meant they're not legal for IDPA's SSP Division, which you prefer to complete in, right? Wolff spring/guidrod combo remains legal for ESP and CDP divisions, no?
Nik

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#12 User is offline   Duane Thomas 

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Posted 23 November 2009 - 09:13 PM

Good point. What Nik said. :D
Pride and fear are emotions, which hope for an outcome. Outcomes take your attention from the present, where the shooting happens, to the future. It is totally impossible to do anything in the future, because it hasn't happened yet. The key to shooting your best is to be present as the witness of the shooting. Do not judge, do not give yourself anything to live up to. We can only shoot as well as we have trained ourselves to shoot. To try to shoot only induces stress. Be content with your current ability. And accumulate practice to improve that ability. Consolidate, build strength where you feel weakness. We cannot raise our ability until we accept our current limitations. Practice dissolves limitations. Matches simply define where the current limits exist. The game of shooting is all about redefining our limits.
- Sam

Amateurs do it til they get it right. Professionals do it til they can't get it wrong.

"It's not the will to win that matters - everyone has that. It's the will to prepare to win that matters."
- Paul "Bear" Bryant

"The only reason why Everest is the highest mountain ever climbed is because it's the highest. If there was one higher, I bet there'd be people trying to climb it."
- Jack Barnes

#13 User is offline   Nik Habicht 

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Posted 24 November 2009 - 10:13 AM

View PostDuane Thomas, on Nov 23 2009, 11:13 PM, said:

Good point. What Nik said. :D

Just didn't want to discourage anyone from finding a happy home in some IDPA Division..... :D
Nik

You're shooting Steel like an A class shooter. Why are you shooting the Paper so slowly? ---- Dave Marques, Production Nationals, 2005

This is a game of high-speed precision. If you don't precisely plan what you want to happen, there's not much chance that it will. ---- Brian Enos, 2004
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