Fx crown Amp regulator creep

 If it is a new gun, the reg might need to be broken in first. 

x2 on the break-in period. The mating surfaces need to cycle together to help the seat conform and eliminate a slow seepage of air. Give it 500 pellets and then re-evaluate.

The other thing to do is adjust your tune to be sure it is in a favorable state. Increase your hammer spring tension (HST) until the velocity no longer increases. Then back it down so the velocity is 97% of that maximum. When you do that, it won’t care if the pressure is 120 bar or 130 bar.

simple answer imo yes. the huma regs that i installed did not creep. if you have a crony you will find that the ES is cut in half, maybe more. tor47 is correct in that it might need a bit more use to break in.

yep should be broken in. if it continues to be a concern go huma. nuff said. good luck

I have the impact with amp reg. People till me break it in. I had for 4 months and shot over 3000 pellets through it and it still creep from 140 to 150 bar over night. That's 40 fps different when I shoot over chrony. You can either dry fire 2 times before you go hunting or you can get a huma and hope it fix it. After trying to fix the damn creep I finally throw in $120 and got the Huma. My experience, the Huma creeps about 5 bars. Not as much as the amp reg but it does creep a little. Yours might fix it, might not. 

The reg creeps not lower but over the pressure it was, that happens because of leak from the high to the low pressure side

I have an EDGUN R5M .25, after 1 week i shot over chrony and the first shot was exactly like all others
Why at most FX guns the reg has to be replaced ?

Hey guys. So I have an Fx Crown with the Amp regulator. I thought this regulator was supposed to not creep. Well the last few times I’ve had it out it creeps from 130 to just above 120 bar on the gauge. I’m not sure if it’s from the heat and humidity or what. This is my first pcp. It’s an absolute tack driver when the reg doesn’t creep. I’ve thought about getting a huma reg for it. Would this solve the problem?

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Nicklandon, did you accidentally transpose the numbers, meaning the reg moves from 120 to 130? If not, it seems you have a leak on the low pressure side of the regulator, assuming the gauge is correct. 

It can’t go that direction. If the output side of the regulator has a leak, the regulator will open and replenish the lost air to maintain the setpoint.

It can’t go that direction. If the output side of the regulator has a leak, the regulator will open and replenish the lost air to maintain the setpoint.

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Thanks for the correction, that makes perfect sense. I thought just after I posted, wait, maintaining pressure is what a reg does, assuming it's working. 

Lol, the last three posts are spot on! Reg creep is only up! Down would mean a leak or significant temp change, I would think? 

If the temperature rises, the pressure will increase.

If the temperature falls, the drop in pressure will cause the regulator to open and top off the pressure back to the setpoint.

Two things I did stopped my amp reg from creeping: First I noticed that the plastic piston top had thin dimples from initial adjustments. I polished them out. Put it in a drill chuck, spinning fairly fast (and true with no wabble), then polish the plastic top being certain that you keep the top flat. I used a new razor blade, holding the sharp edge square with the top to scrape off material (rather than conventionally cutting material at an angle). It worked great. You barely have to touch the piston with the blade to have it remove material. Then, the second thing that helped, during reassembly I cleaned everything well and applied a thin layer of silicon grease on the washers, piston, and O-rings. This is so they don't take long to settle down after each shot. I think these amp regulator's have an issue with the washers and piston settling into place and that is why they creep up in poundage sometimes.

Thanks everyone for replying. It definitely creeps down. 130 to 120ish

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Not sure what that is, but it ain't creep. 

If you have stored it overnight, and then after the first shot you take it out, it drops from 130, to 120, but stays at 120 the following shots, I think it is quiet normal. Simply make one or two dryfire shots before shooting it each time you take it out for the day. It can also be the gauge needle being stuck a litle. If the gun doeas not shoot good, you probably need a more precise measuring device than the gauge on the gun. A chronograph would tell if the velocity change in relation to needle of the gauge. 

Also make sure you have enough pressure in the maintank to rule out that you are not shooting under the reg setpoint. some gauges can be accurate at the top fill pressure, and then get unaccurate at lower pressures. I have an impact where the bottle gauge is pretty accurate at 200 bar, but when it reads under 150 it is not as presise anymore. I have a digital gauge on the reg, so when the bottle gauge reads 110-115 bar, I am just about to pass the 95 bar regpressure. 

This guy got unlucky with his gauge where it was showing 60 bar on the bottle pressure, with no bottle on the gun

https://www.youtube.com/watch?v=PbNRfbSVr3A&t=534s

 I have a very simple but effective way of solving the crown amp regulator creep. I simply remove the FX regulator and smash with a sledgehammer until it's flat as a pancake, then I simply insert a Huma gen 3 regulator that is adjustable all the way up to 195 bar if needs be. If installed correctly without damaging the little white disc you will not see any creep at all.!

Then finally, I drill a tiny little hole through the brass pancake that I made from the FX regulator to make a brass spinner for target practice and hang it at 50 yards and shoot at it! they do tend to creep quite a bit when I hit them with a pellet!

hahaha for anyone without a sense of humor that was meant to be funny