Fx impact air leak

Forums PCP Airguns Fx impact air leak

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    Rogvi
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    Anyone had problem with air leaking out of the regulator on the Fx impact?

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    Rogvi
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    Rogvi
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    It was one of the o-rings in regulator that was damaged.
    Easy fix if you have a spare o-ring ūüôā

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    gixxer3000
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    Everything is an easy fix if you have the spare parts =)
    How can an oring be so mangled on a brand new gun ? I know orings dont last forever and i change a few of them on my other rifles every 1-2 years when they break, but damn, it seems the impact prefer to have them all changed right out of the box, Either to a new one or to a correct size….

    So many posts about regarding leaking allready.
     

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    Rogvi
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    The gun is about a month old and have had to leaks on it ūüôĀ
    First the valve stem o-ring and now the regulator!

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    Lou
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    My hatsan at-44 is 4 years old now, shot probably over 20000 pellets through it and never changed one single o-ring, never even cleaned the gun inside. Rifles today come with damaged o-rings out of the box, need o-rings replaced every month, what a joke.

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    Dartagnan
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    Rogvi – Glad you found the leak and shared your findings with us and with photos. Communicating to members in forums like this help others with the similar model and help with a quick repair, if possible. ¬† I’m anticipating my Wildcat from the second batch to start leaking or have something go wrong so I can join the others on the “WTF Train”… get it fixed and continue shooting. ¬†Hopefully your Impact wasn’t down too long.

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    travels4fun
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    “Rogvi”Anyone had problem with air leaking out of the regulator on the Fx impact?

     

    ‚Ä©Yup, this just happened to my Impact while I was at AoA earlier this week. It happened just as I was getting the gun ready to pack in it’s case.

    Thanks for sharing this post. Looks like FX needs to either source better quality o-rings or change the o-ring’s composition and hardness to handle the pressure.

    What size o-rings are those?

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    Rogvi
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    Jep they should be a little bit harder or better quality.
    But the o-ring size is 2×1 Nbr70.

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    Verve
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    Just to add, FX have listed these as 2x1NBR90 shore, maybe they were using NBR70 shore in earlier production.

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    gkelley
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    Add me to the list (or welcome me to the bad o-ring club). Received my Impact Silver .30 with extra .25 Barrel (which I installed first) on Friday. Mounted scope and ran 12 rounds (4 to zero and 8 more in two 1/2″ groups of 4 at 50 yds). Very excited about accuracy with JSB Heavy. Came loaded to 200bar and was at 180bar after shooting. Went back to shop and put rifle on bench to replace low profile rings (too low for proper sight alignment) with a set of high. Half way through scope ring change I noticed pressure was at 150bar so began looking/listening/feeling for a leak and it was immediately obvious that air was pissing out of the regulator.

    After the usual call to dealer (Kevin at Straight Shooters) and then AOA for the famous wait in queue then select auto callback (which doesn’t ever call you back just gets rid of you from the queue) I decided (since I’m a gunsmith) to pull the regulator stem myself. Mine looks exactly like the picture above – outer o-ring is mangled/deformed and torn. There is NO lube on these o-rings so no wonder one is messed up, it was even stuck to the brass in the groove. A dab of lube goes a long way to keep o-rings healthy especially one that has both twisting motion (reg stem being turned) and compressed friction (reg screw moving in/out).

    So either FX ran out of o-ring lube or someone forgot and now a brand new out of box $2k Impact is out of service after 30 minutes of use because of a ten cent o-ring failure. I have new rings coming in mid week, all 29 (yes 29!) in case I need to do a complete rebuild. I may make these into a kit which will be far far less than the $76 FX kit which isn’t even a complete set, plus a separate caliber specific kit of 5 o-rings for the barrel/shroud.
     

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    riazp
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    Gkelly,

    if if you make that kit I am interested, down here is South Africa I have not been able to find PUR in the sizes needed. Please PM me if it happens!

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    JudiLen
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    I’ve had an Impact for about 6 months. Regulator started leaking 2 months ago and it was returned to Airgun of Arizona for repair.I have never touched the regulator myself but their repair department seems to think I did making it out of spec. It was reset and returned. 10 shots later leaking again and returned with the same comment. Yesterday the gun came back – and guess what. After attaching the air bottle the regulator guage was reading 175 bar – way out of spec. Took it to the range just for fun. 10 shots later leaking again. For the price of this gun I could have purchased a match grade .22. Now the gun has to go back again and after three tries I’m not confident it can be fixed. It’s still under warranty but what happens after that. Extremely disappointed

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    BenGunn
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    The “O-Ring” complete rebuild kits for all three calibers for the FX Impact are on Amazon & Ebay now.¬†

    https://www.amazon.com/Ring-Kit-Impact-25-Caliber/dp/B01LON0JNE

    http://www.ebay.com/itm/O-Ring-Kit-For-FX-Impact-Complete-Rebuild-Kit-includes-every-O-Ring-all-32-/302052602782

     

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    steeve
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    Wow, 3 times in a row…..something is wrong besides the O-ring.
    ‚ÄčI’m guessing that if the o-ring is installed dry, that it will stick to the walls and will rip if you¬†adjust the reg screw while pressurized.¬†
    ‚Ä謆 38$ for the Amazon/Ebay kit is still way expensive, especially considering¬†you only need one or two O-rings to fix a problem, leaving you with a short kit.¬† I think I would try to find them separately and buy in bulk, with more of¬†the ones that are likely to be problematic.
    ‚Ä謆 So far, My Impact has not leaked (6 months old with about one tin of .30s¬†through it).¬† The¬†sliding shroud works a charm; nothing has broken, etc.¬† Only accuracy at long range is disappointing. Would like to trade .30 barrels with someone local to me (San Diego/LA) for a day to see if it improves. (have my own Range, out to 200 yards plus for any takers.)

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    JudiLen
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    Mine started leaking at six months and about 300 rounds and has been unuseable ever since. Sending it back to AofA one more time. After spending $7K with them on guns and compressors the least they could do is to get this right under warranty. Then I’m selling out and going back to an Anschutz .22. The impact is incredibly accurate but the reliability sucks and the seller’s service is even worse.

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    Txboy
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    oringsandmore.com has all the orings you need. Got every oring in bulk from them (enough to rebuild the rifle 25 times) for $28 bucks

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    steeve
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    Txboy, would you mind posting the o-ring store part numbers that you used to order your rings, along with the matching FX part numbers?  That would be a big help.

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    Txboy
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    All I did was download the PDF that fx has for the break down with the oring sizes make a list and called them up and told them the sizes. I will post the the breakdown. Here is the link from another post with the listing. Hope this helps. 
    http://www.airgunnation.com/topic/fx-impact-schematic-and-list-of-orings/

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    Zorb
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    I design all of our pneumatic and hydraulic cylinders where I work.¬† They are used in the plastic injection industry, where environmental temperatures are 300¬į to 550¬įF.¬† My experience with O-ring manufacture Parker is, any O-ring whether it‚Äôs a cup seal, poly pack or x section O-ring, all must have some kind of lubrication during assembly to avoid damage.¬† Also proper installation leads (chamfers) for seals also help prevent damage.
    By the images and the descriptions of problems, it sounds like FX may not be lubricating the seals for installation.  Based on the image at the top, it looks to me as the regulator body may not have proper seal leads for installation, hard to tell with image.  Less likely issue is proper clearances and surface finishes between mating components, will also cause leaks and damaged seals.
    Another thought for those that try to replace the failed seals on their own.  Most seals do not like petroleum based lubricants (if you use lube).  So be mindful of the seal material and acceptable lubricants for that seal.  If using lubrications, I would be worried about propagation of the lubricant into other arears of the gun, that should not have lubrication, thus cause something to get plugged that should not.
    Just my thoughts.  Thanks for the post, gives me things to watch for, when mine comes in.  The information I provided above, is for those that may not have a lot of seal knowledge that is based on my design experience what that seal manufacture.  Hope it’s useful info.  I make no warranties or guaranties.

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