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Thread: Help me troubleshoot an ejection issue.

  1. #21
    holescreek's Avatar
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    I pulled an old build out of the pile and got a pic of the ejector relative to the deflector. The deflector is a little further forward than the bullpup's.

    20211004_115933.jpg

    20211004_120119.jpg

  2. #22
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    Quote Originally Posted by holescreek View Post
    I looked at the shell deflector on my bullpup and the ejector sits a little less than 1/8" in front of the face of the deflector.
    My deflector is about 1/8" in front of the ejector. I bet that's the issue.

    Quote Originally Posted by jkv45 View Post
    Do the cases show any additional damage, other than normal?

    Any way you can set-up a camera and take a video of the action cycling so you can see exactly what is happening and why?
    I set it up in a fixed position and watched in person. Too fast to see.
    If your case turns backwards in the chamber, the case neck is going to get mangled by the bolt face. Unfortunately that doesn't tell much.

  3. #23
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    Quote Originally Posted by Redtail View Post
    I set it up in a fixed position and watched in person. Too fast to see.
    If your case turns backwards in the chamber, the case neck is going to get mangled by the bolt face. Unfortunately that doesn't tell much.
    You would need some way to record it so you could replay it slowly.

    That's the only way I can think of to really know what's going on, but it does sound like your defector is causing the problem.

    Odd problem for sure.

  4. #24
    holescreek's Avatar
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    The good news is it's only steel. Easy to cut out and reposition.

  5. #25
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    Quote Originally Posted by jkv45 View Post
    You would need some way to record it so you could replay it slowly.

    That's the only way I can think of to really know what's going on, but it does sound like your defector is causing the problem.

    Odd problem for sure.

    One of the reasons that roller-delayed blowback rifles are so reliable is the *violent* extraction cycle. When the gun is working correctly, the bolt is moving way faster than a typical gas-driven gun. You're not getting anything useful from that without a high-speed camera, and I'm not spending $10,000 to fix a gun that cost me about $1,200 to build.

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