avenge-x did I get A dud

[stargazer]

 Here is my issue with the avenge-x I believe my regulator is &^^&. with it pressured up to 4000 psi and the regulator screw closed all the way the regulator gauge is sitting at 1900 psi. after I fire one shot it comes down to 1600 psi and within 1.5 minuts it will creep back up to 1900 psi. i have had this pcp rifle for around 6 months now and it has done this sinse day one. i ordered a nate chrony to see if i can do anything make it shoot more accurate. most times i can keep a quarter size group and then it will spread to a 2" group for a couple of shots then back to the quater size groups so today is the first day i'm making time to play with it. i backed the hammer valve out counter clockwise all the way. that only took 3/4 of a full turn and i will start with the regulator valve closed all the way also. last month i tried out the nate chrony and my fps spread was 845 - 890.  the 890. was my first shot. total shots 39. and after the first shot the spread was more like 845 - 875. what are your thoughts? it is getting light enough outside to shoot so i'm heading out to experiment with it. thanks for any feedback i need all the hlp i can get.

[nervoustrigger]

Two key things I’m picking up from your description.

First, the slow rise from 1600 back up to 1900 is regulator creep.  If you are a DIY type, it can usually be remedied by dressing the regulator’s valve seat by wet sanding with fine sandpaper.

Second, the fast first shot indicates too much hammer spring tension.  If I understood you correctly, you’ve already backed out the adjuster to it’s minimum, in which case you would need to remove the spring and trim off a half coil, then recheck to see if the adjuster provides enough travel to back off to the point where the velocity begins to fall.  (Or alternatively, increase the regulator setpoint so the valve becomes harder to knock open, whereby taking advantage of the excess hammer spring tension.  Doing so would increase velocity and reduce shot count somewhat.)

For reference, I have an original Avenger that I needed to trim the hammer spring...some write up on it here
https://www.gatewaytoairguns.org/GTA/index.php?topic=196248

[stargazer]

 it sounds like i bought a unit that is not even close to plug and play i just got in from tinkering with it and here is my results after tunning. if i keep my shots about 11 seconds apart i can maintain a dime size group any sooner or later the fps is off and so is my shot. you would think for what they charge for this equipment they wouldn't let this get past quality control. in the amature astronomy equipment world this is known as a hobby killer. i shouldnt have to overhaul a new air rifle with only 2 tins of pellets ran through it. i guess if i put my mind to it i could do the mods myself but i shouldnt have to. i will give it one more shot the plan is to find someone in the area that works on pcp's and get their opinion on what it will take to fix it, because i don't have a lot of free time. and truthfully i enjoy shooting my beemans r9 and r7 a lot more. less equipment to deal with. and ammo is cheaper and last a lot longer. thanks for the tips i'm not ready to give up on it yet, just a little dicouraged. 

[bduares]

I have yet to see any pcp airgun that is completely "plug and play", needing nothing, and which requires no tinkering. As far as hobbies go it is a very high degree of hands on DIY work, asking a lot of questions of others, reading not only manuals but schematics, and watching a lot of videos. New users often have problems just to get a pcp air gun filled with, and holding, air. Your issue requires a piece of wet sandpaper and a few minutes work. That is a very minor DIY thing in the pcp world.

As far as what is being charged: an Air Venturi Avenger on on the low end of the scale. It is a beginner, "newbie", cheap pcp rifle, and they sold a lot of them to people who heard of this pcp stuff and wanted to get into it.

[avator]

If it don't function out of the box as advertised, send it back. Don't settle for a repair and return without a discount and free shipping both ways.. unless you're ok with paying full price plus extra shipping for a refurb.   
The more folks tolerate this the more it will happen. It's a perfect way for vendors to dump broken returns.. just keep sending them out until someone decides to keep it and fix it themselves.

[stargazer]

I have yet to see any pcp airgun that is completely "plug and play", needing nothing, and which requires no tinkering. As far as hobbies go it is a very high degree of hands on DIY work, asking a lot of questions of others, reading not only manuals but schematics, and watching a lot of videos. New users often have problems just to get a pcp air gun filled with, and holding, air. Your issue requires a piece of wet sandpaper and a few minutes work. That is a very minor DIY thing in the pcp world.

As far as what is being charged: an Air Venturi Avenger on on the low end of the scale. It is a beginner, "newbie", cheap pcp rifle, and they sold a lot of them to people who heard of this pcp stuff and wanted to get into it.

I'm just saying I'm not very impressed with what I got for $559 plus tax. It was advertised as accurate reliable and quality, and reviewed as such also. And just maybe if more people call out their under performing equipment the producers will improve their products.

[stargazer]

Two key things I’m picking up from your description.

First, the slow rise from 1600 back up to 1900 is regulator creep.  If you are a DIY type, it can usually be remedied by dressing the regulator’s valve seat by wet sanding with fine sandpaper.

Second, the fast first shot indicates too much hammer spring tension.  If I understood you correctly, you’ve already backed out the adjuster to it’s minimum, in which case you would need to remove the spring and trim off a half coil, then recheck to see if the adjuster provides enough travel to back off to the point where the velocity begins to fall.  (Or alternatively, increase the regulator setpoint so the valve becomes harder to knock open, whereby taking advantage of the excess hammer spring tension.  Doing so would increase velocity and reduce shot count somewhat.)

For reference, I have an original Avenger that I needed to trim the hammer spring...some write up on it here
https://www.gatewaytoairguns.org/GTA/index.php?topic=196248

if i where to relace the regulator valve would this fix my problem or could it be the seat between the valve and where the valve fits into? I am completely new to pcp's so it's swim or drown. also originally the hammer valve was open 3/4 of a turn so that can be turned back down to closed/backed off. 

[kbstingwing]

if it is still under warranty I would send it back, Call the vendor and get a Return Authorization and ask for a replacement

[aslap]

I was having regulator issues on mine. Mucho creep. Overnight a rise from 160 bar to 220 bar.  Constant pressure rise during shooting. I talked to Stacy at AV and she sent me a new regulator under warranty. When I looked at my reg under some magnification, the seal on the piston stem had these concentric, very light grooves around it. The valve seat itself looked fine from what I could tell. The new reg solved the creep problem.

With the price point on the rifle, the reg may not be as good as you’d like. With the new reg, the creep is minimal but getting a really stable set point is kind of touch and go. When I fill to the max and bring the reg up to 160 bar, it settles in at more like 155 bar. Maybe nothing to worry about. I’m getting 50 good shots with 25 grain, 25 cal pellets at an average of 906 fps and good accuracy with an SD of 4. I do notice, as have others, that the reg pressure does drop some depending on the fill pressure. A new reg may fix you right up. If I saw that Huma had a reg for the thing, I’d get one in a heartbeat.

Tony

[3crows]

I will very unlikely ever buy a China Cxxp Rifle (CCR) ever again. Plug and play, lol, right.

I would send it back and get my money back, which is what I did with the three China junk rifles I bought including two leaky Gauntlets with shoe polish finishes and one Avenger that would not hold air and shot all over the place.