Skout Everything Skout EVO and Epoch
- Thread starter MSR Workshop
- Start date
Well, I suppose it’s time to report back on my latest tinkering experiment.
I completely disassembled the high-pressure regulator, and you’ll notice there are concentric holes around two parts of the lower section of the regulator. I decided to enlarge every one of those holes to 3 mm. I also took the poppet valve (or needle valve—whatever you want to call it) and enlarged its orifice to 1 mm.
My thinking was that if I completely messed it up, I’d just chalk it up to science—it’s a replaceable part, after all. But so far, I can report that the gun has been performing quite nicely. The recovery time on my digital gauge seems a little quicker, and my extreme spread has tightened up as well. I’ve also noticed the low-pressure regulator seems a bit more sensitive to tuning now—although that could just be my imagination.
The idea behind this modification was to reduce any restriction in the path to the spool valve, helping it recover more quickly between shots.
I’ve included a picture of the needle valve I enlarged, as well as a stock photo of the high-pressure regulator with the holes I’m referring to.
Happy shooting, everyone!
I completely disassembled the high-pressure regulator, and you’ll notice there are concentric holes around two parts of the lower section of the regulator. I decided to enlarge every one of those holes to 3 mm. I also took the poppet valve (or needle valve—whatever you want to call it) and enlarged its orifice to 1 mm.
My thinking was that if I completely messed it up, I’d just chalk it up to science—it’s a replaceable part, after all. But so far, I can report that the gun has been performing quite nicely. The recovery time on my digital gauge seems a little quicker, and my extreme spread has tightened up as well. I’ve also noticed the low-pressure regulator seems a bit more sensitive to tuning now—although that could just be my imagination.
The idea behind this modification was to reduce any restriction in the path to the spool valve, helping it recover more quickly between shots.
I’ve included a picture of the needle valve I enlarged, as well as a stock photo of the high-pressure regulator with the holes I’m referring to.
Happy shooting, everyone!
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Interesting, can't really comment either ways as to my thinking at the sorts of pressures used I am not sure how much flow comes into it, but it must for some of the aperture modifications made to have an observable effect, I too opened out the poppet aperture to 1mm, and I have noticed a decrease in shot to shot air use but nothing else, and will be getting another poppet so I can experiment further with a larger aperture, which also says that the size of the hole does matter, and while I used to know my airflow characteristics when tuning cars I am, not sure about the high pressure stuff, but its people like us who are prepared to take the risk and try this stuff that make gun tuning interesting, so well done for being adventurous.
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HaInteresting, can't really comment either ways as to my thinking at the sorts of pressures used I am not sure how much flow comes into it, but it must for some of the aperture modifications made to have an observable effect, I too opened out the poppet aperture to 1mm, and I have noticed a decrease in shot to shot air use but nothing else, and will be getting another poppet so I can experiment further with a larger aperture, which also says that the size of the hole does matter, and while I used to know my airflow characteristics when tuning cars I am, not sure about the high pressure stuff, but its people like us who are prepared to take the risk and try this stuff that make gun tuning interesting, so well done for being adventurous.
Thanks.
I wouldn’t know how wide to open that poppet just for fear of weakening the sides of the metal because so much force has applied onto it with that regulator spring pushing against from that piston.
I had one that I had replaced because it was ever so slightly bent.
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One thing to remember when dealing with small parts in relation to HPA is that you're dealing with much less stress due to the size, so not being good at maths if you're working with 2-3,000psi it's much reduced when confined to 0.050" .Ha
Thanks.
I wouldn’t know how wide to open that poppet just for fear of weakening the sides of the metal because so much force has applied onto it with that regulator spring pushing against from that piston.
I had one that I had replaced because it was ever so slightly bent.
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Interesting observation on my further testing of the Epoch, after seeing the position of @Ada s FX chrono I decided to get mine as far back as possible on the barrel shroud so not quite on the M LOC rail but close, and the result was much more stable readings and gave a 10fps spread over 36 pellets with a 2.1 average, and further testing with different pellets gave similar readings.
Another thing I also kept track of since enlarging the hole in the poppet valve was the use of air was much better with readings of just 15-18bar for 36 pellets, which is very good, but you have to remember that this is sub 12, so velocities are around to 780fps mark, but it still results in about 1/2 a bar per pellet and most strive to get it at bar per pellet so pretty pleased with these results.
Another thing I also kept track of since enlarging the hole in the poppet valve was the use of air was much better with readings of just 15-18bar for 36 pellets, which is very good, but you have to remember that this is sub 12, so velocities are around to 780fps mark, but it still results in about 1/2 a bar per pellet and most strive to get it at bar per pellet so pretty pleased with these results.
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Is that FX chrono mounted to the mlok rail directly? And if so do you by any chance have a print file for it?
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Hi, yes it is mounted on an mlok picatini rail.
Here is a download link for the stl , you might need to slightly adjust the size depending on your printer.
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