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Thread: Action spring pressure measurements.

  1. #21
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    Quote Originally Posted by Straight Shooter View Post
    Just fyi....Ive been running a RED Sprinco and ST-T2 buffer in my LMT Defender for a few thousand rounds now with 100%
    reliability. I now question if its too hard on the gun or not, in terms of cycling.
    I will add this... The use of the t-2 is a detriment to your whole system. I have used it. I have thrown it in the garbage. I say that an h-2 and sprinco will do it cheaper. The spikes t-2 is an abomination that caused me headache to no end. So I don't know how it worked for you, I'm glad it did, but it did not work for me.
    "You cannot play fair with people who don't care if you get wiped off the map. You don't have to hate everyone who isn't part of your tribe, but it is foolish to keep caring about people who don't care about you."
    Speech at the second National Policy Institute conference, December 26, 2013.



    See you soon, AC.

  2. #22
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    Quote Originally Posted by BufordTJustice View Post
    DISCLAIMERS: a) I am NOT a spring engineer (or an engineer of any type), b) I own both Springco and SSS/Tubbs CS springs (in fact I have owned every spring used in the video aside from the Springco Orange and the Tubbs .308/42 coil springs), c) I am FULLY aware that David Tubbs is an advocate of his own products, so spare me the commentary on that. I get it.

    Here is a video where David Tubbs uses a pressure sensor installed at the rear of a carbine receiver extension which has been fluted and he tests the following springs for pressure at both installed height (in battery) and compressed (bolt lock-back) positions. You can also see the springs oscillate as they return to battery (though I'm not sure this has any actual bearing on reliability or longevity).

    https://www.youtube.com/watch?v=8fMVZbrnvu8


    It seems to verify that the WHITE is Springco's best offering for CAR REs.

    David tests the spring in the following order:

    Worn CAR spring of unknown manufacture
    New CAR spring of unknown manufacture
    Tubbs/SSS AR15 CS Flatwire spring
    Springco WHITE CS spring
    Springco RED CS spring
    Springco ORANGE (.308) CS spring
    Tubbs/SSS .308 CS Flatwire spring


    It's an interesting video, all in all.
    Why is he cramming rifle springs into a carbine receiver extension...weird.

  3. #23
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    fixit69...THANK YOU for the info. I sure am NOT doubting you or anyone else who have personal experience with the T-2 buffer. My questions are: HOW, exactly..is it detrimental? Whats it doing that is bad? How has mine ran for right at or a little over 3000 rounds now..100%? Ive seen hatred for this before, and I don't know if its just hatred of SPIKES in general, or this specific buffer. My main question is: Am I causing damage, or premature wear/tear on my rifle by using this spring/buffer set up?
    " Be NOT ye afraid of them..
    Remember the Lord, for He is GREAT & TERRIBLE!
    FIGHT for your bretheren..for your sons & for your daughters,
    for your wives & for your households"!

  4. #24
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    Quote Originally Posted by Straight Shooter View Post
    fixit69...THANK YOU for the info. I sure am NOT doubting you or anyone else who have personal experience with the T-2 buffer. My questions are: HOW, exactly..is it detrimental? Whats it doing that is bad? How has mine ran for right at or a little over 3000 rounds now..100%? Ive seen hatred for this before, and I don't know if its just hatred of SPIKES in general, or this specific buffer. My main question is: Am I causing damage, or premature wear/tear on my rifle by using this spring/buffer set up?
    The powder does not have the ability to act as a dead blow nearly as effective as the solid weights. It damps vibration but does not cancel it out, basically. It's like...someone jamming a transmission by overpowering the station with static vs. Hitting it with wavelengths half a phase out of sync, regarding effectiveness kindof. I mean, you can run a car buffer and likely works fine...but h or H2 would be better. It's not trash...it's just a second rate solution based on novelty vs. efficacy.

  5. #25
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    Quote Originally Posted by Iraqgunz View Post
    I use Sprinco springs exclusively in my AR's and not only has there been minimal spring shrinkage, but I have yet to have any issues with rust, function or otherwise.
    Pat 4 overs dumped them due to qa/qc. Some springs notably longer. He says. Sprinco did change to a slightly longer spring in the white color. I wonder if this transition period caught him unaware or if this is just marketing and product loyalty shifting kindof like LAV does when he changes employers.

  6. #26
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    Quote Originally Posted by Iraqgunz View Post
    I use Sprinco springs exclusively in my AR's and not only has there been minimal spring shrinkage, but I have yet to have any issues with rust, function or otherwise.
    Why do you use them? They cost more than twice that of USGI spring. Are they more than twice as good?

  7. #27
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    Quote Originally Posted by Straight Shooter View Post
    My questions are: HOW, exactly..is it detrimental? Whats it doing that is bad? How has mine ran for right at or a little over 3000 rounds now..100%? Ive seen hatred for this before, and I don't know if its just hatred of SPIKES in general, or this specific buffer. My main question is: Am I causing damage, or premature wear/tear on my rifle by using this spring/buffer set up?
    They aren't detrimental in any way. There are just better assemblies available for less money. That being said, what was your reasoning for purchasing the ST-T2 when you could have purchased a spec H2?

  8. #28
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    Quote Originally Posted by MarkG View Post
    Why do you use them? They cost more than twice that of USGI spring. Are they more than twice as good?
    I will note on one of my rifles,with the Sprinco White spring in place, I got about 1/2 as many failures to chamber off bolt-release than with a USGI spring in place. (The rifle is gone, I'm sure it was the rifle and not the spring, but the point remains that the Sprinco helped overcome some geometry issue).

  9. #29
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    Quote Originally Posted by WS6 View Post
    Why is he cramming rifle springs into a carbine receiver extension...weird.
    I was just asking the same question to another member via PM. I think he should develop two different AR15 spring lengths as the flat wire spring is damn near useless in a carbine extension.

    However, it feels like an entirely different spring in a A5 extension....and very similar in strength to the stock Vltor A5 spring. I'm going to give it a shot.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  10. #30
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    Quote Originally Posted by WS6 View Post
    The powder does not have the ability to act as a dead blow nearly as effective as the solid weights. It damps vibration but does not cancel it out, basically. It's like...someone jamming a transmission by overpowering the station with static vs. Hitting it with wavelengths half a phase out of sync, regarding effectiveness kindof. I mean, you can run a car buffer and likely works fine...but h or H2 would be better. It's not trash...it's just a second rate solution based on novelty vs. efficacy.
    Bingo.

    In two words, bolt bounce. There is simply no reason to set up a gun to have it...and the T2 allows more bolt bounce than even an H buffer, while an H2 completely cancels it out.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

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