Interesting article on regulator creep for those seeking to better understand it.
View attachment Regulator plenum pressure.pdf
View attachment Regulator plenum pressure.pdf
Last edited:
Creep
- Thread starter spinj
- Start date
For most guns, the heating and cooling effect of the refill cycle will not have as much influence on pressure creep as the surface quality / wear of the valve seat.
Also, a large plenum is not inherently more susceptible to the stated heating and cooling effect. It will instead be influenced most significantly by how much of plenum is depleted during the shot cycle. So for example, for a given FPE, a larger plenum will exhibit less of a temperature swing because it will experience less pressure drop during the shot.
Also, a large plenum is not inherently more susceptible to the stated heating and cooling effect. It will instead be influenced most significantly by how much of plenum is depleted during the shot cycle. So for example, for a given FPE, a larger plenum will exhibit less of a temperature swing because it will experience less pressure drop during the shot.
Upvote 0
I agee, a venturi effect temperature change is more created by a constant flow vs short bursts.
Upvote 0
I feel like some are worrying about a change on a Guage without looking at their velocity. I have 4 regulated guns without a Guage on the regulated chamber and I don't see that as a bad thing. It is easier tuning to get a number for where the regulator is but with no gauge to worry about I just look at the velocity. I know it goes down with temperature because I've measured it. I don't fully understand why but I don't have too. IMHO there are too many of us spending too much time and attention staring at a gauge and too little time with their chronograph. The Guage is a good clue what to expect in velocity but the velocity reading is the real data.
Upvote 0
Yeah, there's a lot of misinformation in that article. Some, physics based mistakes and some common sense based. It is true, as mentioned above, that a larger plenum is less likely to be affected, rather it "absorbs“ any minor heat of compression, which in short bursts, tends to be negligible.
Upvote 0