I like airbuks way better than DB Tueller. Even before his douchebagery became obvious to everyone I thought like he looked like he probably had kids locked up in his basement.
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FX fx impact m4 first 10 shots are slow
- Thread starter milanilo
- Start date
Mine takes about 2-3 shots to get back to normal. 10 shots to get back to your setting is overkill. Might want to polish your rod and check for reg creeps.
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Yeah well maybe it needs to be translated for them, QC that is or....here's a thought....not cramming 20 different guns through the same assembler isn't the best of ideas. Also HELLO, remove sharp edges that can shave 0-rings, I know radical thought.
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some says it’s normal for fx guns !!
will its not cuz i am fx impact owner since version 1 and i still have 2 and 3 none of them have to be shot 10 times to regain velocity
something wrong with m4
cuz the issue is not leaving the gun over night then this happen no !
i have this issue even when resting the gun for 3 hours
i wonder why all fx reviewers on youtube ignoring this issue like it’s never happened
will its not cuz i am fx impact owner since version 1 and i still have 2 and 3 none of them have to be shot 10 times to regain velocity
something wrong with m4
cuz the issue is not leaving the gun over night then this happen no !
i have this issue even when resting the gun for 3 hours
i wonder why all fx reviewers on youtube ignoring this issue like it’s never happened
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Hmmmmm...
It can only be Reg creep.... or Sticking valve.
10 shoots to get up to speed - sounds like regulator creep combined with a huge plenum.... = many shots before the pressure is settled.
So maybe the new wonder regulator is not so wonder after all....
Or
It could be the fix that FX did recently by changing the o-ring rubber type on the valve, to fix the slow first shot problems just made it much worse.
What about trying to exchange that little o-ring back to the previous rubber type 90° NBR o-ring type.
I have not got any Impacts myself - but I experienced a little of 1 or 2 slow shots on my FX Crown gen.1 myself.
My money will be on the reg creep.
I myself was fighting 5-8 bar reg. creep on my Gen. 1 Crown, until i gave up and installed a Huma regulator.
The Huma regulator also gave me some creeping pressure but nothing like the AMP from FX. (The Huma also shortened the re-cover time considerable to about 1/3 of the AMP)
Since then i have grinded all the disc springs flat and polished the surfaces to mirror glaze with polish paste on a glass plate.
Today (I think i did the polish 3 years ago) I have maybe 1 or maximum 2 Bar reg. creep on my FX Crown after two weeks in storage.
But many times I guess this little pressure variation, could be related to the temperature differences between last time shooting, storage temperature and the temperature when I take the rifle out to shoot again after two weeks on storage.
It can only be Reg creep.... or Sticking valve.
10 shoots to get up to speed - sounds like regulator creep combined with a huge plenum.... = many shots before the pressure is settled.
So maybe the new wonder regulator is not so wonder after all....
Or
It could be the fix that FX did recently by changing the o-ring rubber type on the valve, to fix the slow first shot problems just made it much worse.
What about trying to exchange that little o-ring back to the previous rubber type 90° NBR o-ring type.
I have not got any Impacts myself - but I experienced a little of 1 or 2 slow shots on my FX Crown gen.1 myself.
My money will be on the reg creep.
I myself was fighting 5-8 bar reg. creep on my Gen. 1 Crown, until i gave up and installed a Huma regulator.
The Huma regulator also gave me some creeping pressure but nothing like the AMP from FX. (The Huma also shortened the re-cover time considerable to about 1/3 of the AMP)
Since then i have grinded all the disc springs flat and polished the surfaces to mirror glaze with polish paste on a glass plate.
Today (I think i did the polish 3 years ago) I have maybe 1 or maximum 2 Bar reg. creep on my FX Crown after two weeks in storage.
But many times I guess this little pressure variation, could be related to the temperature differences between last time shooting, storage temperature and the temperature when I take the rifle out to shoot again after two weeks on storage.
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the regulator is always 134 during first 10 shots
of course during the shot it decreases to 127 but it comes back to 134 very fast
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Wow, I’ve had an Impact M3 for a while now and I have not had this issue. I do indeed have a chrono as well. I check my speeds every couple of weeks when the weather changes. I know that with paintball guns when you have first shot or first few shot drop off it’s always too low of a dwell setting. Open up the valve adjuster more and it should help some. Mine is near all the way open. It may be slightly less consistent perhaps? That does not bother me with a 300 bar 700cc airtank. Hope this helps some of you. I have had some issues with my Impact though nothing quite like this where it’s not a relatively easy fix. Best of luck to all! Don’t like that Ernest Rowe post. Makes me nervous about my two FX guns.
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Just curios is FX supporting or allowing that you can change the bottle to a 300 bar bottle and then fill to 300 bar. I mean is the aluminium body rated for 300 bar on an Impact? I use 700cc 300 bar bottle on my FX Crown and on my Daystates rifle - but I would never fill to more than 250 bar. In fact my Delta Wolf comes from the factory with a 250 bar bottle - but in the manual maximum fill pressure is 240 bar.... ?
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I have owned Impacts for 5-6 years now, maybe longer…
Had a MK2 25cal 700mm… used it alot, one of my neighbors saw me shooting pigeons one day, and literally made me an offer I couldnt refuse… He still owns it, its just now starting to see regulator creep and needs a reg rebuild… there has to be over 15000 rds thru it over the years. Could be double that… Regardless, its critter killer for sure.
When I sold the MK 2, I immediately ordered a MK3 25cal 700mm with slug liner/kit…. Its at least 2 years old now.
I will say my old MK 2 is more accurate with Pellets, than the MK 3 is with slugs… but I still prefer to shoot slugs, for the longer ranges and the occasional Coyote. The MK 3 has to have 4000-5000 rds thru it. No issues what so ever. None.
Yes I have a Chrono, no I do not check my speeds after I develop a tune… because I hit what I am aiming at and have no reason to check it. It may sit for a few months at a time, between uses. It still puts a smile on my face when I squeeze the trigger.
After reading this, I guess I will check chrono speeds more frequently. But as long as the pigeon/squirrel takes a dirt nap, I am quite happy with my FX Impacts.
Sorry to read about yall’s experiences. But I have been a happy FX customer. No I am not considering a MK 4, because the MK 3 gets the job done…. Unless another neighbor makes me an offer I cant refuse.
Had a MK2 25cal 700mm… used it alot, one of my neighbors saw me shooting pigeons one day, and literally made me an offer I couldnt refuse… He still owns it, its just now starting to see regulator creep and needs a reg rebuild… there has to be over 15000 rds thru it over the years. Could be double that… Regardless, its critter killer for sure.
When I sold the MK 2, I immediately ordered a MK3 25cal 700mm with slug liner/kit…. Its at least 2 years old now.
I will say my old MK 2 is more accurate with Pellets, than the MK 3 is with slugs… but I still prefer to shoot slugs, for the longer ranges and the occasional Coyote. The MK 3 has to have 4000-5000 rds thru it. No issues what so ever. None.
Yes I have a Chrono, no I do not check my speeds after I develop a tune… because I hit what I am aiming at and have no reason to check it. It may sit for a few months at a time, between uses. It still puts a smile on my face when I squeeze the trigger.
After reading this, I guess I will check chrono speeds more frequently. But as long as the pigeon/squirrel takes a dirt nap, I am quite happy with my FX Impacts.
Sorry to read about yall’s experiences. But I have been a happy FX customer. No I am not considering a MK 4, because the MK 3 gets the job done…. Unless another neighbor makes me an offer I cant refuse.
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I dispatched following parts to Croatia, US and UK to fix slow shots problem in M3 and M4. My personal M3 is also fine since I installed this part. So far every friend using it has no complaints. YouTube video is also available.
FX should have fixed this issue much earlier.
FX should have fixed this issue much earlier.
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Is that the guy that told me the DRS video would be done by August? He is articulate. Can’t say much for his ambition though
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Well, I just spent the morning taking the M4 apart and here's what I found. Again, I've owned multiple rifles of every generation of the Impact so I'm fairly familiar with them but have never had any of them take nearly 10 shots to warm up until this M4. So this was the first time that I've ever had to tear it down to this level and I have to say that it wasn't that bad . . . even borderline enjoyable learning new parts of the assembly. It took a little longer than it probably should have but it was a combination of it being my first time doing it and my OCD that slowed things down. It should be a lot faster going forward. The hardest part of the whole process was my hands cramping up while polishing the rod - getting old is no fun.
Anyhow, this rifle has probably only had a few hundred pellets through it and here's what the valve rod looked like:
After cleaning it up and polishing it for about 10 minutes, this is what came out (all the black gunk on this blue towel is what came off the rod AFTER I'd already wipe off the goop from above on another towel):
This was the gunk that came out of the valve body around the orings:
And this is the valve rod cleaned and polished prior to reassembly (the little squigglies you see is from the thin layer of silicone oil applied to the rod):
Everything's put back together relatively easily - I didn't break anything and no leaks. Aired it back up and it's shooting at ~900fps right now. Early results look promising as the very first shot after airing up the rifle was at 853fps and the second was 885fps - then the rest hoovered around 900fps. Will let it sit overnight and see what those first few shots look like on the chrony. Be back tomorrow...
Anyhow, this rifle has probably only had a few hundred pellets through it and here's what the valve rod looked like:
After cleaning it up and polishing it for about 10 minutes, this is what came out (all the black gunk on this blue towel is what came off the rod AFTER I'd already wipe off the goop from above on another towel):
This was the gunk that came out of the valve body around the orings:
And this is the valve rod cleaned and polished prior to reassembly (the little squigglies you see is from the thin layer of silicone oil applied to the rod):
Everything's put back together relatively easily - I didn't break anything and no leaks. Aired it back up and it's shooting at ~900fps right now. Early results look promising as the very first shot after airing up the rifle was at 853fps and the second was 885fps - then the rest hoovered around 900fps. Will let it sit overnight and see what those first few shots look like on the chrony. Be back tomorrow...
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Been there, done that
polishing the valve rod to a mirror finish will definitely help. But it will not 100% prevent new gunk building up. The o ring the rod is riding on extrudes because it is not resting against a flat surface. The valve rod wears down that o ring and in particular the extruded part with every shot. A mirror polished rod will obviously result in less particles being ripped from the o ring, but not in none (at least in my experience). It may take 500 shots, 1000 or 5000, but it will come back. The higher the power of your tune the bigger the problem. I am guessing that folks who “don’t have” the issue either don’t have a chrono and shoot within 50 or have lower power tunes in terms of reg pressure. Or maybe there is a luck of the draw component like o ring batches or something ridiculous like that I don’t understand.Upvote 0
Just remember, your super polished valve rod to a mirror finish is not the best approach. Think of it like this. Your oring is a squeegee. If you squeegee glass, what happens? If you squeegee something porous what happens. With my last five Impacts with this issue, after installing either peek discs or plenum parts, I had to find the right amount of polishing and the right lube to help elevate this issue.
I also agree with what is stated above about what makes this issue worse. I have one Impact that started life at my house as a pellet gun. For almost a year it had the issue but it was barely noticeable. When I started testing slug barrels I was building on that gun, I of course turned it up. Then the issue became more pronounced. And that’s with a peek disc installed the day I unboxed the gun. So if I noticed it becoming more of an issue with parts that prevent extrusion, the guys with stock guns aren’t making stuff up about having to warm up their old FX farm tractor.
I also agree with what is stated above about what makes this issue worse. I have one Impact that started life at my house as a pellet gun. For almost a year it had the issue but it was barely noticeable. When I started testing slug barrels I was building on that gun, I of course turned it up. Then the issue became more pronounced. And that’s with a peek disc installed the day I unboxed the gun. So if I noticed it becoming more of an issue with parts that prevent extrusion, the guys with stock guns aren’t making stuff up about having to warm up their old FX farm tractor.
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I polished my valve rod but did not cure anything sadly. Only when I had the correct part from Mubhaur.
I could hear when shooting the impact was slower on velocity.
I had a spare valve rod from an older version impact, and I put different orings on it for 24 hours. Afther 24 hours you could feel that the orings were clamping on the valve rod.
I could hear when shooting the impact was slower on velocity.
I had a spare valve rod from an older version impact, and I put different orings on it for 24 hours. Afther 24 hours you could feel that the orings were clamping on the valve rod.
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Here's the update -
-After letting the rifle sit for 4+ hours yesterday, first five shots were: 872, 885, 884, 885, 885 (normal is 895'ish)
-After sitting overnight, first five shots were: 854, 870, 869, 880, 883
I wouldn't say that the cleaning/polishing process completely resolved the situation but definitely brought it back to what I've known as "normal" for an Impact, which is a slower first/second shot. This is essentially how most/all of my Impacts throughout the years have behaved. It's not ideal but 99.99% of my shooting is inside of 40yds so this isn't a huge consequence for me.
However, this is the first Impact that I've had to put in extra effort just to get it to act "normal" (which, again, "normal" isn't exactly ideal) so that's disappointing given that it is the latest/greatest model. Also curious to see if/when the issue will rise up again and when I'll have to clean everything up again.
-After letting the rifle sit for 4+ hours yesterday, first five shots were: 872, 885, 884, 885, 885 (normal is 895'ish)
-After sitting overnight, first five shots were: 854, 870, 869, 880, 883
I wouldn't say that the cleaning/polishing process completely resolved the situation but definitely brought it back to what I've known as "normal" for an Impact, which is a slower first/second shot. This is essentially how most/all of my Impacts throughout the years have behaved. It's not ideal but 99.99% of my shooting is inside of 40yds so this isn't a huge consequence for me.
However, this is the first Impact that I've had to put in extra effort just to get it to act "normal" (which, again, "normal" isn't exactly ideal) so that's disappointing given that it is the latest/greatest model. Also curious to see if/when the issue will rise up again and when I'll have to clean everything up again.
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I have send a message to Airbuks (he works now for FX, doing the YouTube videos for FX), showed the part @mubhaur made and explained him what it does. Also explained what the current flaw is of the FX part.
He responded, letting me know that he has forwarded the information to FX, and they are reviewing it.
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