Notos Max pressure/regulator questions

[Murfdurf82]

So my question is fairly simple, what part of the air chamber dictates pressure. I love my tube style tank and don't want to change, so is it the regulator? And if so can I switch to a regulator in the tube that would keep its appearance but bumps up the pressure to 300 bar. Is it sometimes a combo of the reg and the manufacturers stated max pressure for the tube? If it's not the regulator then I should be able to check into adapting a 300 bar tube set up...as I say this Im guessing that if an air receptacle says a max pressure of 250 bar you never go over due to the extreme pressure and what damage or worse it would cause a person if a tank burst. Any thoughts or insights would be appreciated. Thank you!

 

[FL22]

So my question is fairly simple, what part of the air chamber dictates pressure. I love my tube style tank and don't want to change, so is it the regulator? And if so can I switch to a regulator in the tube that would keep its appearance but bumps up the pressure to 300 bar. Is it sometimes a combo of the reg and the manufacturers stated max pressure for the tube? If it's not the regulator then I should be able to check into adapting a 300 bar tube set up...as I say this Im guessing that if an air receptacle says a max pressure of 250 bar you never go over due to the extreme pressure and what damage or worse it would cause a person if a tank burst. Any thoughts or insights would be appreciated. Thank you!

Someone correct me if I’m wrong, but the maximum fill pressure is typically listed on the Airgun.

Not specific to your Airgun, but some bottles and tubes have a maximum fill pressure and a maximum working pressure.

The thing is, filling a bottle or tube to the maximum fill pressure but beyond the maximum working pressure can/will damage the regulator.

Some Airguns marketed towards individuals that are newer to PCPs have a burst disc to help prevent a failure (that could be something as simple as an O-ring or catastrophic) by an accidental over filling.

 

[SpindleB]

Springs, valves, hammers, materials it is all a game of balance. Can be as simple as the size of the oring used. It can only withstand X amount of pressure.

Unregulated guns you have valve lock. Too much pressure on the poppet for the hammer to overcome.

Basic design rule used to be 50%. Everything is designed for 50% over stated value. Minions tell me that because of advances in design software and modeling that margin is 25% now days.

 

[Murfdurf82]

Springs, valves, hammers, materials it is all a game of balance. Can be as simple as the size of the oring used. It can only withstand X amount of pressure.

Unregulated guns you have valve lock. Too much pressure on the poppet for the hammer to overcome.

Basic design rule used to be 50%. Everything is designed for 50% over stated value. Minions tell me that because of advances in design software and modeling that margin is 25% now days.

It all comes down to I'm not getting rid of the tube style but I want more shots. A 300 bar tube with regulator. Right now I have a standard tube w reg. connected to 40 cc of C88 plenum threaded into a 25 crc plenum. It's a steady 825-815 fps on Norma 17.6 gr. 22-24 shots filled at 3400 psi. So if I had let's say 100-110-120 cc 300 bar tube w the CRC plenum I can keep the tube style and probably double my shot count.

 

[Florida_Man]

Increase volume is a better option. The 250-300 bar range in my rifles that allow isn’t the same as an increase in storage volume.
The math to get the same amount of shots if you got to a 300 bar fill is only adding 28cc to a 250 bar fill.

If it’s possible to attach two aftermarket plenums that are 15cc each, you’d be over the gain of a increase pressure. (I don’t know if that is possible to stack Notos plenums)

 

[Murfdurf82]

Increase volume is a better option. The 250-300 bar range in my rifles that allow isn’t the same as an increase in storage volume.
The math to get the same amount of shots if you got to a 300 bar fill is only adding 28cc to a 250 bar fill.

If it’s possible to attach two aftermarket plenums that are 15cc each, you’d be over the gain of a increase pressure. (I don’t know if that is possible to stack Notos plenums)

Stacked 3 up here didn't do it on purpose but I ended up here and it keeps the deviation low. I don't have a recorded chrono session but adding the the 2nd/3rd to the first one you see in the picture improved that, the silver seam in the air tube is the end of the factory tube the rest is all the plenums. Maybe I should be happy w 22-24 shots unless I upgrade for a longer barrel or accept it lol.

 

[Pumacarl]

So my question is fairly simple, what part of the air chamber dictates pressure. I love my tube style tank and don't want to change, so is it the regulator? And if so can I switch to a regulator in the tube that would keep its appearance but bumps up the pressure to 300 bar. Is it sometimes a combo of the reg and the manufacturers stated max pressure for the tube? If it's not the regulator then I should be able to check into adapting a 300 bar tube set up...as I say this Im guessing that if an air receptacle says a max pressure of 250 bar you never go over due to the extreme pressure and what damage or worse it would cause a person if a tank burst. Any thoughts or insights would be appreciated. Thank you!

The answer is simple too. Don't exceed the lowest maximum allowed pressure anywhere in your system. If the tube you want to keep is rated for 250b, that's it. I have not seen many tube guns that had increased pressure options except for some very expensive titanium ones. Bottle guns, especially those screwing directly into a regulator, have more options, on the bottles and the regulators. Don't be me, I spent over a grand (extra) on my P15 trying to make it something it wasn't. A good lesson for sure and it is really good now, but realistically I would have been much better off buying a used better gun that was made to do what I wanted. Everyone has to figure this out for themselves I guess, and I was told that too! lol

 

[FL22]

There is an excellent reason why I say @Pumacarl is the voice of reason .

I was going to eventually ask if the answer is a different Airgun, idk.

 

[Pumacarl]

@FL22 Yeah right, I'm the "broke" voice of reason, with an "un"reasonably thick skull most of the time.

I'm learning too, slowly, and just trying to have fun with it.