Here in the UK , Bagnall and Kirkwood told me today that there is a new valve rod available that is supposed to stop this first few slow shots on the FX impact, so once i aquire one i will see if it solves this issue on my .30 cal 700mm FX impact M4.
FX FX IMPACT - NEW VALVE ROD.
- Thread starter Redwolfpaul25
- Start date
I have that one already in my Impact. That is not going to stop the slow shots.
The slow shots is an oring in the plenum-neck that extrudes on the rod.
The slow shots is an oring in the plenum-neck that extrudes on the rod.
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Im going to assume this is the only fix. https://www.accu-shot-orings.com/pr...act-m3-m4-billet-aluminum-single-oring-plenum
Anything else on FX is just ignorant to it.
Anything else on FX is just ignorant to it.
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I bought a o ring kit from Accu-shot o rings so i will install them along with this valve stem and see how it goes.
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Yes, please. I want an Impact buy I HATE FX's business practices. But the tuning appeals to me like my reloading table. Ive been eyeing the Red Panda
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Followimg on from my earlier post, Bagnall and kirkwood have a spare new design ( july 2025) plenum neck that i will be using ( see attatched screenshots)
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This is the new part.
Basically if the oring leaks, you need to buy a new part. The plastic prop you need to press in it would be a hell to remove.
Look at the plenum neck how thinn the aluminium is, I think FX should think twice using this at high pressure.
Basically if the oring leaks, you need to buy a new part. The plastic prop you need to press in it would be a hell to remove.
Look at the plenum neck how thinn the aluminium is, I think FX should think twice using this at high pressure.
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The fixes I have had so far [ 2 on warranty ] were good for around 3000 shots before acting up again . Just cleaning the rod works for a while . I just did contact UA for any updates and was told that FX said to UA that 5 to 10 warm up shots was acceptable as far as they are concerned . UA told me that it is not acceptable to them and that they [ UA] are going to continue to look for a permanent fix . FX needs to advertise this short coming in there sales of Impacts just to be fair and honest .
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Welp, thank you UA for standing up, good on them. However thats a bs answer, so ill be going with a Red Panda. They made that decision for me.
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I guess that Accu-Shot O-Rings keeps their location top secret as it's not on the website. I had to Google it to locate them in New Bedford, MA.
Odd!
Odd!
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This topic was hot in about 2022 time.
Many many ideas surfaced, change this and that,
but the only thing actually helped was
polishing the valve rod to mirror finish...only need maybe 1/2" length where the white oring rides.
This how much the Valve Rod moves total:
Ones there, polishing the HS and VS ends to shiny helps with consistency as well.
Mirror polish the Reg parts.
I had no reason to disassemble my MK2 since.
Many many ideas surfaced, change this and that,
but the only thing actually helped was
polishing the valve rod to mirror finish...only need maybe 1/2" length where the white oring rides.
This how much the Valve Rod moves total:
Ones there, polishing the HS and VS ends to shiny helps with consistency as well.
Mirror polish the Reg parts.
I had no reason to disassemble my MK2 since.
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The plenumneck from m3 and first generation m4 had a conical shape in the plenumneck. The oring was clamping on the rod under pressure. Its all.
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I wish FX would definitively fix this and then offer it to the current owners at a discount. That would reward those who have diligently tried to fix this problem. By the way, it IS a problem, and if FX tries to ignore it, that could definitely hurt their business. They need to take this seriously. I'm not an FX basher by the way, I have three right now, a DT, WC and Crown, so I'm not just bloviating. AND I have had two Impacts.
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Yes its been a major problem, i know FX have been very innovative over the years but there are plenty other manufacturers out there now making some good guns that dont need the customers to mess about with them after!
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There are no major problems, only great solutions.
You know that as well before you've got your FX, that especially the Impact variants are tinkerer guns.
I would guess now, but I don't hear 95% users complaining for things. Yes, some questions here and there, but the most complaining those numbers doesn't triggers the design change.
You know that as well before you've got your FX, that especially the Impact variants are tinkerer guns.
I would guess now, but I don't hear 95% users complaining for things. Yes, some questions here and there, but the most complaining those numbers doesn't triggers the design change.
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