A Question for Bob (rsterne)

[wll2506]

Bob, I was wondering on a QB78 HPA set up and the standard threaded tube, what outgoing psi do you feel comfortable with ?

I have about 1350psi in all mine, surely not 1400 psi. I have the bust valve of course in all mine and would never consider using my guns without it.

I just want to get your opinion, thanks Bob.

wll

[rsterne]

I personally have no problem running HPA in a QB78 up to whatever you can do with a 1.8K burst disc in the output side of the regulator.... which is usually about 1500 psi, although sometimes you can get the disc to live at 1600.... CO2 can get up to 1900 psi at 120*F, which you can achieve in a hot car in the sun, or just leaving the gun laying in direct sunlight full of CO2.... The threads are not the issue, the weakest point is actually the flange on the cap that retains the insert in the end of the tube....

Bob

[Airgun.Sniper]

 We also starting a new Gate area called Question for Sterne...Rsterne. Just kidding...Im sure everyone would enjoy too pick your brain Bob


Lot of info up there....and beyond me


 Cheers

 Jay

[wll2506]

I personally have no problem running HPA in a QB78 up to whatever you can do with a 1.8K burst disc in the output side of the regulator.... which is usually about 1500 psi, although sometimes you can get the disc to live at 1600.... CO2 can get up to 1900 psi at 120*F, which you can achieve in a hot car in the sun, or just leaving the gun laying in direct sunlight full of CO2.... The threads are not the issue, the weakest point is actually the flange on the cap that retains the insert in the end of the tube....

Bob

Bob, thank you very much, that is of great help, so the top of the cap can pop off if to much pressure is applied, I will pin, but the threads blowing off were my concern !

wll

[rsterne]

Anything can fail, most of the time they do so at the weakest link.... However, manufacturing tolerances can creep in, and bite you where it hurts.... All we can do is try and guess what the most likely mode of failure is and stay wayyyyyyyyyyyyyy below it....

Bob

[wll2506]

Anything can fail, most of the time they do so at the weakest link.... However, manufacturing tolerances can creep in, and bite you where it hurts.... All we can do is try and guess what the most likely mode of failure is and stay wayyyyyyyyyyyyyy below it....

Bob

Thank you Bob, i appreciate your input greatly.

wll