Main questions

  • How often/rare it is for a burst disc to blow under rated pressure?
  • Is there a way to decrease the likelihood of them falsely triggering?
  • How loud when it happens and how can I dampen it to be under safe hearing level?

Context

I’m planning an upgrade path to make my replica as quiet as possible. Not sniper p***y. Only for the safety of my hearing. My current AEG is built for backyard target shooting but still fail miserably, low accuracy, low power, loud AF (need earpro). It shoots 2.4 Joule and less than 1 m/s deviation. I’m told by a shop owner that I already reached the limit of AEG.

I want something that can lift heavier BBs without also blasting my eardrum in the process, and a ‘fun-gun’ that I can hose down juice cans with whole mag of tracer BBs. That’s why I think about going HPA. I don’t really mind the tank, the line, or limitation of semi on pure mechanical engine… EXCEPT the burst disc concern in contrast to battery fire where I can just yeet the gun real far and dump water on it. I know that these things are very safe but I have seen some comments about them randomly bursting - which, if it’s louder than safe hearing level (have seen a video of 3000 psi scuba tank literally jumped off the floor when it bursted) then it will totally negate the benefit of going HPA for me. There is an option of filling the tank below 1.8 k to minimize the risk but that also means fewer shots per fill.

Alternatively I can get a TAC-41 for long range fun and another AEG with airbrake for dumb full-auto gun. But I don’t want to maintain two of them and I’m sure people here know what comes with teching an AEG. This won’t be as quiet as HPA system on same energy output either :(

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Would love some opinion on this. Am I being paranoid?

  • dual_sport_dork 🐧🗡️English
    2·
    10 days ago

    I’m fascinated at what type of setup you have in your AEG that it requires ear protection. That seems a bit extreme to me.

    Anyway, I leave my HPA paintball gun fully pressurized in my closet at all times, albeit with an air shutoff valve installed and set to the off position. A burst disc should never burst at it/your tank’s rated pressure. They’re in place as a final failsafe in the event that your pump does not shut off at the correct pressure, or possibly if you have a tank teetering right at the edge of its burst pressure and leave it in a hot car or something. I have never ever in my entire life blown a burst disc in any airsoft or paintball gun under any circumstances. I don’t think you need to worry about it.

    From what I understand it is quite loud when it happens. It stands to reason; as part of the process, your entire HPA tank gets vented within a couple of seconds.

    • TacticalToothbrush@discuss.tchncs.deOPEnglish
      2·
      9 days ago

      I’m fascinated at what type of setup you have in your AEG that it requires ear protection.

      Typical AEG work, reshim, regrease, brushless, etc. Top half of the gearbox is padded eva foam under the shell. I believe the culprits of the noise are the piston/cylinder head (no sorbo) it’s always these two isn’t it.

      Crazy part, I kept increasing spring weight until it stop gaining energy (full cylinder). At one point, the piston slapped so hard the air coming out of the nozzle is noticeably warm. So, yes, it is extreme. I lower the spring weight after that. Now it got SP130 inside. It actually went down from 2.5 Joule when the spring is new. I believe this only allowed for mil sim sniper role. Quite impressed the gearbox haven’t shattered yet.

      I have never ever in my entire life blown a burst disc in any airsoft or paintball gun under any circumstances. I don’t think you need to worry about it.

      Thanks for the assurance. I try to avoid any risk of getting the big EEEEEEEEEEE as much as I can.

      Anyway, my stupid ass brain just remember that wolverine makes CO2 stock (too occupied with researching HPA engines) Have some experience dealing with cartridges in the past and even in case of failure, it’s not that violent. And this is even better for my use case. I don’t go to any field. Shooting less than a mag every few days, I don’t have to worry about hydro test, bleeding the line, dialing the reg up and then down after half an hour of can massacre.

      I can get it ready fast, I can get it back in storage fast. And with some aftermarket part maker offering cartridge with GBB style recharging, that’s cherry on top not having to waste leftover gas. Within 15 min drive, there are places that sell cartridges but nowhere to fill my tank (haven’t ask fire station at the moment)

      Next problem… wallet.