Hi, my 2nd reg is filling slowly on my m3, its 2yo so no doubt it could be worn out or something or need new o rings, is this a easy Job to do or should I Just buy a New huma reg ? Its consisted and shoots Nice but hard to wait 40sec to refill xD
FX M3 plenum slow refill
- Thread starter Gambler
- Start date
Just red a post in FX Facebook group about worn regulator piston O-ring. Air Shootist wrote about it. Reg did not creep or something just slow plenum fill.
Reg piston O-ring had developed ridge and that caused reg piston not to move correctly.
Quoting:
"I ended up taking 2nd at the NRL22 match today with my FX Airguns Panthera and 30gr Patriot Slugs. I missed WAY too many shots today (missed more on my first stage than I did at the entire match last weekend..), and I KNEW my gun was having a slow recharge rate from the reg. Instead of doing the maintenance I knew it needed, I just hastily took it out and shot it anyway. My score is already 100 for February from winning the Beloit February match, so it doesn't matter, but that is not the point here. Keep reading.
I want you guys to take a close look at this piston o-ring. I took a photo in the mirror to show 2 different angles. What you will notice about this o-ring is that it has developed a ridge around the entire outside edge. The lesson to be learned here, especially with dynamic (moving) o-rings is that even though they may not be leaking they can still need to be replaced. This oring may just be the original piston oring on this 1 year old gun that has shot 10,000 - 15,000 shots out of it. The ridge developed from prolonged usage and age, and was basically "flapping" on a micro level inside the regulator housing and causing slow recharge rates because it was not moving as freely. So while there was no leak, I still had an issue because I kept that dynamic piston o-ring in that gun for so long when I should have replaced it 2-3 times already given the amount of use my rifle has on it.
Moral of the story - if you have a sluggish regulator on a gun that is 1 or more years old or has a ton of use - get in there and replace your reg piston o-ring(s) REGARDLESS if they don't leak or visually look "OK! I only found the ridge by removing the o-ring and carefully inspecting it, otherwise it would have been a total sleeper problem! Hope this helps someone out there!"
Reg piston O-ring had developed ridge and that caused reg piston not to move correctly.
Quoting:
"I ended up taking 2nd at the NRL22 match today with my FX Airguns Panthera and 30gr Patriot Slugs. I missed WAY too many shots today (missed more on my first stage than I did at the entire match last weekend..), and I KNEW my gun was having a slow recharge rate from the reg. Instead of doing the maintenance I knew it needed, I just hastily took it out and shot it anyway. My score is already 100 for February from winning the Beloit February match, so it doesn't matter, but that is not the point here. Keep reading.
I want you guys to take a close look at this piston o-ring. I took a photo in the mirror to show 2 different angles. What you will notice about this o-ring is that it has developed a ridge around the entire outside edge. The lesson to be learned here, especially with dynamic (moving) o-rings is that even though they may not be leaking they can still need to be replaced. This oring may just be the original piston oring on this 1 year old gun that has shot 10,000 - 15,000 shots out of it. The ridge developed from prolonged usage and age, and was basically "flapping" on a micro level inside the regulator housing and causing slow recharge rates because it was not moving as freely. So while there was no leak, I still had an issue because I kept that dynamic piston o-ring in that gun for so long when I should have replaced it 2-3 times already given the amount of use my rifle has on it.
Moral of the story - if you have a sluggish regulator on a gun that is 1 or more years old or has a ton of use - get in there and replace your reg piston o-ring(s) REGARDLESS if they don't leak or visually look "OK! I only found the ridge by removing the o-ring and carefully inspecting it, otherwise it would have been a total sleeper problem! Hope this helps someone out there!"
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I had a similar problem with my M3 slow refilling, not as slow as yours though.
I rebuilt (new o-rings) the 1st reg.
I rebuilt (new o-rings) the 1st reg.
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That ridge is not from a ton of use. It is because of too loose tolerances between the elements and using too soft orings. Replace them with NBR90. The phenomenon is called oring extrusion.
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How long have you been using the electronic gauge? I have seen some of them take some extra time to recover after a shot as compared to a fully mechanical gauge. There seems to be some electronic 'damping' in the digital gauges that does not exist in the mechanical analog gauges. It's an easy swap, just go back to your original analog gauge and see if your slow recovery time gets better. Just a thought...
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I bought this m3 used and then the digital gauge sat at the bottle preassure, so I swapped them around. By the looks of it it seems that its already a huma gen3 2nd reg in it cuz it has the flat head adjustment, didnt think about it before I saw a video now that the amp has a hex adjuster. But can it be that I have thightnd the gauge too much so the oring is blocking the hole?
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Count to 10 and shoot, then count to 40 and shoot. See if there is a big velocity difference. If not then you just might have a slow gauge. Digital gauges are nice in one sense, but they can make a guy nuttier than a squirrel turd if he becomes obsessed with looking at them.
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Time to roll up your sleeves and rebuild the reg. But before you do, check how fast your first reg recovers. If it’s super slow then that’s why your second reg is slow.
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The 1st reg is stuck on 190bar even when the bottle gauge says 170bar so I took it out and replaced it with a New, and it filled up super slow from 0 to 170 so its the 1st reg that is nuts?
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