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Thread: Does anyone know of a video which disproves the gas ring alignment myth?

  1. #1
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    Does anyone know of a video which disproves the gas ring alignment myth?

    I am trying to prove to someone that the gas ring gaps do not need to be staggered. Does anyone know of a video proving this? If not I will probably make one.

    Thanks

  2. #2
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    Explain that there is only a gap when the bolt is out of the carrier. Once installed the gap closes. Any gas that passes between what little gap remains is also blowing around the ring in other places too. I think the whole "don't line up the rings" myth is a hold over from automotive piston installation, where the main worry with gap alignment was symmetrical cylinder scoring, not fuel/oil blow-by.

  3. #3
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    Quote Originally Posted by P2000 View Post
    I am trying to prove to someone that the gas ring gaps do not need to be staggered. Does anyone know of a video proving this? If not I will probably make one.
    Thanks
    This is a slam dunk. Take two rings off and run the gun. It will work fine. That kinda proves that it makes little difference how the other two are installed.

  4. #4
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    Try this....

    Stagger the ring gaps 120 degrees apart (equal spacing). Assemble and shoot 20 rounds through the gun. Dis-assemble and inspect...
    Look at how the spacing has changed between gaps. The rings rotate during operation just like automotive piston rings (and valve springs).
    As mentioned previously, the ring gaps almost close up when installed in the bolt carrier.

  5. #5
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    Or better yet...

    Line up the gaps, install and shoot. Disassemble, space the gaps, re-install, and shoot again. Any difference?

    Either way, I still take the time to stagger the gaps. If anything, it makes me pay attention to the bolt longer (i.e. inspect for chips, cracks and other defects.)
    Last edited by halo2304; 08-01-10 at 10:51.

  6. #6
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    Quote Originally Posted by halo2304 View Post
    Or better yet...

    Line up the gaps, install and shoot. Disassemble, space the gaps, re-install, and shoot again. Any difference?

    Either way, I still take the time to stagger the gaps. If anything, it makes me pay attention to the bolt longer (i.e. inspect for chips, cracks and other defects.)
    It has already been done numerous times, it appears that the OP is trying to get around having to do it over and over for the unbelieving audience. While gas-rings are fairly inexpensive, it still sucks having to remove and install them repeatedly and paying $5 in shipping for $2 of parts.
    Last edited by Failure2Stop; 08-01-10 at 12:36.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  7. #7
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    Great idea about removing two of the rings, but I think I will just line them up as stated in the myth. Even when I explain this, people don't believe it. With a video I can simply let them watch and believe.

  8. #8
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    Brother Quib has an outstanding post on the subject here, complete with pictures:

    http://www.weaponevolution.com/forum...ARRIER-CUTAWAY
    Last edited by ST911; 08-01-10 at 19:56.
    2012 National Zumba Endurance Champion
    الدهون القاع الفتيات لك جعل العالم هزاز جولة الذهاب

  9. #9
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    Quote Originally Posted by Failure2Stop View Post
    It has already been done numerous times, it appears that the OP is trying to get around having to do it over and over for the unbelieving audience. While gas-rings are fairly inexpensive, it still sucks having to remove and install them repeatedly and paying $5 in shipping for $2 of parts.
    A better idea is to tack on the $2 parts to a larger order BEFORE you need them.

  10. #10
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    Shoot the video and "youtube" it - that way it will be a resource for many of us to use.

    cheers

    tire iron

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