Blow forward AEG nozzle... Why it didn't take on?

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Doc j
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Fri Jun 12, 2020 6:07 am

There's a vid animation on YouTube showing a AEG gearbox with a blowforward nozzle.
I found this pic of discontinued part.
Interested in thoughts why think they stopped making it. /discontinued.
Or if anyone knows why not good in AEG gearbox.
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jackssmirkingrevenge
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Fri Jun 12, 2020 10:45 am

Doc j wrote:
Fri Jun 12, 2020 6:07 am
Interested in thoughts why think they stopped making it. /discontinued.
Or if anyone knows why not good in AEG gearbox.
Probably lack of power. Blow forward valves work well but since they need to be activated before the shot is fired, they lower gas pressure significantly meaning there is less pressure available to actually accelerate the projectile.

With a blowback mechanism on the other hand, the projectile can be out of the barrel before the bolt moves significantly, meaning that most of the gas used would have been "wasted" anyway.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Doc j
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Sun Jun 14, 2020 3:54 am

OK.
Blow back, blow forward.
How does a Non blow back work?
Is that like the trigger pulls nozzle loads bb
Seats bb. And somehow blocks air input and releases chamber?.
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farcticox1
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Sun Jun 14, 2020 4:40 pm

From what I am reading Blowback is just added recoil to give a more realistic feeling ?

Doc j
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Mon Jun 15, 2020 3:54 am

farcticox1 wrote:
Sun Jun 14, 2020 4:40 pm
From what I am reading Blowback is just added recoil to give a more realistic feeling ?

Yeah probably.
Ol m8 jackssmirkingrevenge said it.
Wastes air.
as air pressure that fires bb also
Recoils the cocking bolt against a spring.
Backwards (blow back).
Far enough to alow next bb to feed.

Now I interested how they work (Although they don't seem as popular as gbb.
Is Nbb (non Blowback)
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jackssmirkingrevenge
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Fri Jun 19, 2020 5:51 pm

Doc j wrote:
Sun Jun 14, 2020 3:54 am
How does a Non blow back work?
Is that like the trigger pulls nozzle loads bb
Seats bb. And somehow blocks air input and releases chamber?.
More or less, it depends on the model.

On my Marui MK23 the trigger pushes a nozzle forward that strips a BB from the magazine and least it in the barrel, while simultaneously cocking and releasing the hammer.

The KJ Works Ruger Mk I is more typical and has the trigger pulling back the barrel to seal against the magazine.

Image

You can see the prongs on part #29 that is moved by the trigger, and hook on to part #18 that is attached to the barrel.
farcticox1 wrote:
Sun Jun 14, 2020 4:40 pm
From what I am reading Blowback is just added recoil to give a more realistic feeling ?
It also uses the action to recock the hammer and reload the next BB.

NBBs tend to be double action while blowbacks are mostly single action (with some double/single actions when it matches the real deal like the Beretta M92 or Sig Sauer P226)

They basically use a hammer to open a valve that releases gas into a chamber connected to the barrel. This chamber has a floating valve to the barrel that lets some gas through, firing the projectile. The valve then closes, and the rest of the gas pushes the slide or bolt back. This gives the recoil effect, while also recocking the hammer. As the slide or bolt comes back, it strips a BB from the magazine and loads it into the barrel, ready for the next shot.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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