what im asking is since i have to fire a few shots to burn out the creep, will having a larger plentum hold more of that reg creep air and require more shots to bring it to the regulated pressure since the plentum holds more regulated air.
Correct ... If using the same reg that creeps, having an increase in plenum size miens you now have more air that is at too high a pressure and therefor MORE SHOTS required to get stabilized.
But doesn't the rate of creep also have to be taken into account? Let's say the reg is set at 140 bar and over the course of 4 days, with a plenum of "x" size it, it will creep up to 150 bar. If you double the size of the plenum, assuming the same rate of increase wouldn't it take 8 days now to reach the 150bar? Or in the same 4 days only creep up to 145bar? If so then this would be true in the 8 days period, but in the 4 days period it would theoretically take the same # of shots? Twice as much air, but only 1/2 was much pressure increase?
Not necessarily .... Creep is not a constant and one needs to understand WHY it finally stops and plenum pressure does not keep increasing ?
That reason is as the plenum pressure increases so is that pressure forcing the seat harder attempting to create a seal. At some point the seat pressure is sufficient and creep stops. So the question & anwser actually becomes .... Based upon the rate of creep present a larger plenum would take longer to get to said pressure when creep stops. Such as Ninja regulators often exhibit, they creep immediately not settling for 30-45 seconds or more. With some seeming stable in the short term but creep in the long term. This too has a bearing on if creep or not is a problem ? OP question being is if or not a larger plenum will need more purging shots to get equalized to a set pressure that is repeatable while actively shooting and that anwser is YES.
