How Stable Should 2nd Reg Be?

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MikeAllen

MikeAllen

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Feb 4, 2021
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Canyon Lake Texas, United States
I had things tuned in pretty well yesterday with my M3 with the 2nd reg set at 105 bar. This afternoon I noticed reg 2 was at 111 bar I dry fired a few times and it seemed to settle in around 107 bar. I’m using an Air Marksman digital gauge on the second reg. Would this be considered reg creep? Am I being to picky? Are low reg pressures in this range more prone to variations?
 
Vetmx said:
You are suffering from DGS. If your gun is tuned right, a few bar in either direction shouldn’t mean anything. Put a normal gauge back on it if you can’t stop being mesmerized by the constantly changing digital numbers.
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dens228 said:
I have a Sekhmet gauge on my second reg. It reads 134 bar 95% of the time, the other times it's anywhere from 132-135. It shoots the same either way.
Temp change can change how many bar is currently at the 2nd reg too. Going out in the heat warming the air, going out in the cold compressing the air.
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Thanks. I expect small variations just wanted to know if my variations were normal. Temperature is very consistent. Pro just getting to detailed!
 
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Chukar60 said:
You have found the problem with a digital gauge if you are a detail freak.
I run one on all my FX guns for the second reg. If it is within 3 bar either up or down I ignore it. You wont even see that variation on an analog gauge
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Yep - should probably just put the factory gauge back on and “ fuggetaboutit!”
 
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MikeAllen said:
Yep - should probably just put the factory gauge back on and “ fuggetaboutit!”
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I initially started to use the digitals with my Mavericks. The gauges FX sent those out with were an utter joke So I replaced them with digital ones. Soon realized the trap or as Vetmx called it DGS. I like them but learned quick it was easy to let them drive you bonkers.
 
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Chukar60 said:
I initially started to use the digitals with my Mavericks. The gauges FX sent those out with were an utter joke So I replaced them with digital ones. Soon realized the trap or as Vetmx called it DGS. I like them but learned quick it was easy to let them drive you bonkers.
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HAHA, this sounds exactly like me, including starting with one on a Maverick.
 
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Keep in mind that those digital gauges are often only accurate to between 1% - 2% of the reading. So 111 bar is equal to the range of 108.8 - 113.2 bar, 107 bar is equal to the range of 104.9 - 109.1, and 105 bar is equal to the range of 102.9 - 107.1. Note that all of those ranges overlap with one another on the ends.

So with the overlap, the readings you provided fall between 102.9 bar to 113.2 bar just taking into account the error on the three spurious readings you took (105, 107, 111). Knowing this, it probably makes little sense for you to fret over whether the reading is 107 or 111 since both overlap within each others range of error. It's really splitting hairs since your equipment does not have the accuracy nor the resolution to provide you with readings that are adequate enough to allow you to be so picky.

Sorry, I got off on a tangent. You were saying something about reg creep... ;)
 
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Spartan said:
Keep in mind that those digital gauges are often only accurate to between 1% - 2% of the reading. So 111 bar is equal to the range of 108.8 - 113.2 bar, 107 bar is equal to the range of 104.9 - 109.1, and 105 bar is equal to the range of 102.9 - 107.1. Note that all of those ranges overlap with one another on the ends.

So with the overlap, the readings you provided fall between 102.9 bar to 113.2 bar just taking into account the error on the three spurious readings you took (105, 107, 111). Knowing this, it probably makes little sense for you to fret over whether the reading is 107 or 111 since both overlap within each others range of error. It's really splitting hairs since your equipment does not have the accuracy nor the resolution to provide you with readings that are adequate enough to allow you to be so picky.

Sorry, I got off on a tangent. You were saying something about reg creep... ;)
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Great information - thanks!
 
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weevil said:
No no, you can turn this to your advantage!!! If you set your speed target at a certain reg pressure on the knee and then mark your micro wheel with a paint pen or little sticker, I find that you can click the micro up or down one for each 2bar deviation in reg pressure to correct the speed. Now that’s some OCD!
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Oh no - there are two of us?
 
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Vetmx said:
You are suffering from DGS. If your gun is tuned right, a few bar in either direction shouldn’t mean anything. Put a normal gauge back on it if you can’t stop being mesmerized by the constantly changing digital numbers.
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Either that or just remove the damned thing! To many people are stuck on watching gauges rather than watching their shots. When you get off the reg the gun will show signs to you. You just need to learn what those signs are and not be so dependent on gauges.
 
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