PP700 adventure started(Artemis PP700s-a)

[Techie]

Congratulations, hopefully.  So the O-ring you are talking about is the one mentioned earlier in this thread, and pictured here, right? 

Do you think maybe just adding this O-ring could solve some of our regulator creep problems?  It sounds like this would be a lot easier than going into the regulator.  It just involves unscrewing the air tube and adding this O-ring, right?  Or... will this just solve the leak-down problem you were having and have no effect on regulator creep?

[nervoustrigger]

Yes, that's the O-ring but no, I don't see any way that step would mitigate creep.  It was just to solve a leak.  The only thing I did to help the creeping was burnish the plastic washer and screw together with a slurry of J-B bore paste and some medium polishing compound (stick type that I scraped off some with a box blade and mixed with the J-B).  I'm also running it about 2fpe hotter than before and that may have helped since a few guys have said it seems to work better at a higher setpoint.

[Techie]

Thanks Jason, but I guess I don't understand where the sealing surface of the regulator is.  Referring to the parts diagram you posted earlier for the PP700W, it looks like part #23 (the constant valve piston) pushes against part #24 (an O-ring?) and the other side of this O-ring pushes against the inside of part #26 (the constant valve).  If so, I'm not sure what you burnished, since you would not be burnishing an O-ring.  Perhaps part #24 is not an O-ring?

Perhaps you are talking about burnishing part #28 (the intake valve washer) where it faces against the front of part #26 (the constant valve)?  If so, it seems to me this is not the main sealing surface of the valve.  I would think the O-ring on the other side of the valve is where the air is sealed.  Does this make sense?  Obviously without having taken the thing apart myself I'm just guessing, using nothing more than the parts diagram.  I see myself probably going in there eventually so I want to make sure I understand.

Thanks again for all your help.  You are a pioneer to me!

[nervoustrigger]

Hi Mike, the parts I burnished together are the plastic washer #28 and the tapered screw #29.

Part #23 on the other side of the valve just keeps air from leaking to the outside world.  It is a brass piece with an O-ring...I think the O-ring is represented by #24 on the diagram.

[SilentMatt]

Isn't it the lack of light that throws our chrony's off?

Yeah, or too much light. The random numbers were just popping up, not while I was shooting.

[Bob Pratl]

Yes, that's the O-ring but no, I don't see any way that step would mitigate creep.  It was just to solve a leak.  The only thing I did to help the creeping was burnish the plastic washer and screw together with a slurry of J-B bore paste and some medium polishing compound (stick type that I scraped off some with a box blade and mixed with the J-B).  I'm also running it about 2fpe hotter than before and that may have helped since a few guys have said it seems to work better at a higher setpoint.

Jason, to help in cutting down regulator creep, I also did what was suggested on the Facebook forum, by de-burring and polishing  both sides of the 10 regulator washers. It seems to help by cutting down the break-in time for the regulator. Every little thing seems to help. I ended up purchasing 2 of the PP700's and one of them stayed at 3000 PSI for two weeks, with the added regulator O-Ring, and the other still has a very small leak that I can live with. Bob

[MonsterMaxx]

this is great news, things are solvable.  and pushing 900fps is wow

what's the length of the string now?

[Bizill]

LOL.  I still have yet to be allowed to join the FB group.  Haha, I gave up.

[Rallyshark]

LOL.  I still have yet to be allowed to join the FB group.  Haha, I gave up.

Did you ask me to send the admin a message or not?  I can't remember.  I've never had him not add anyone I gave him the name of, which is quite a few at this point.  I'm pretty scatter brained though, and I have a hard time remembering what I ate for lunch.  If I haven't, track me down on there, shoot me a message and tell me who you are on here.  That way I'll know who I'm dealing with, and I'll send the admin a message to add you.  He's very worried about trolls, and the group being closed down, since it is UK based(the anti-gun cult is strong over there).  I'm D Avery Sellars on facebook.

[Techie]

If you drain all the air out of this pistol for disassembly, can you refill it with a hand pump?  Seems like I read somewhere that certain PCP airguns when totally empty require an initial refill from a tank because a hand pump will not allow the inlet valve to close until there is some internal air pressure.  Is this true of some guns?  What about this pistol?

[nervoustrigger]

I have refilled mine from zero several times with a hand pump in the last few days.  The valve spring is so strong, I did not even have to cock it first.

[nervoustrigger]

It looks like the creep in mine was fixed.  After sitting for 18 hours, the next shots were 890 and 892 which is right on with the previous shots.  That's a little more than I want so I'm going to back off the reg and hammer just a bit and retest.

[Techie]

Great!  Good to know.  Good work.

[Bizill]

LOL.  I still have yet to be allowed to join the FB group.  Haha, I gave up.

Did you ask me to send the admin a message or not?  I can't remember.  I've never had him not add anyone I gave him the name of, which is quite a few at this point.  I'm pretty scatter brained though, and I have a hard time remembering what I ate for lunch.  If I haven't, track me down on there, shoot me a message and tell me who you are on here.  That way I'll know who I'm dealing with, and I'll send the admin a message to add you.  He's very worried about trolls, and the group being closed down, since it is UK based(the anti-gun cult is strong over there).  I'm D Avery Sellars on facebook.

Multiple times.  It's not anything you're doing or not.  Just not meant to be.  But I'm happy with my pistol as-is and you as well as others trickle down info in this thread so it's all good.  I pretty much hate FB anyway and always have.

[Rallyshark]

LOL.  I still have yet to be allowed to join the FB group.  Haha, I gave up.

Did you ask me to send the admin a message or not?  I can't remember.  I've never had him not add anyone I gave him the name of, which is quite a few at this point.  I'm pretty scatter brained though, and I have a hard time remembering what I ate for lunch.  If I haven't, track me down on there, shoot me a message and tell me who you are on here.  That way I'll know who I'm dealing with, and I'll send the admin a message to add you.  He's very worried about trolls, and the group being closed down, since it is UK based(the anti-gun cult is strong over there).  I'm D Avery Sellars on facebook.

Multiple times.  It's not anything you're doing or not.  Just not meant to be.  But I'm happy with my pistol as-is and you as well as others trickle down info in this thread so it's all good.  I pretty much hate FB anyway and always have.

Oh well, I don't know what happened there...  Of course I and many others will continue to spread what we know

[Techie]

Oh well, I don't know what happened there...  Of course I and many others will continue to spread what we know

Please do share it all here.  I don't use Facebook either, but I want to know as much as possible about working on this pistol, especially about disassembly and fixing regulator creep.

[Plinker4life]

I tore into the regulator today. My # 29 screw was very loose and not threaded snug to the white washer. I snugged every thing up. My bellvills were stacked (())(())((.  Put it back together and shot the following string. Stopped after the 14th shot waited 5 min's then finished the string. Shooting JSB 15.9 with starting pressure of 2900psi and ending around 1700psi.

[Sfttailrdr46]

That looks pretty good

[Rallyshark]

I tore into the regulator today. My # 29 screw was very loose and not threaded snug to the white washer. I snugged every thing up. My bellvills were stacked (())(())((.  Put it back together and shot the following string. Stopped after the 14th shot waited 5 min's then finished the string. Shooting JSB 15.9 with starting pressure of 2900psi and ending around 1700psi.

You know, now that you mention it, I've seen quite a few people mention that screw being loose.  I took mine apart at the very start, so I know mine hasn't been loose.  That could be where a lot of folks are having problems with creep and consistency?  I've never had issues with those things, and that could be part of the reason why.  Either way, good string you got going there!  Out of curiosity, have you tried it with a 220bar fill after you took the reg apart?

[Plinker4life]

I tore into the regulator today. My # 29 screw was very loose and not threaded snug to the white washer. I snugged every thing up. My bellvills were stacked (())(())((.  Put it back together and shot the following string. Stopped after the 14th shot waited 5 min's then finished the string. Shooting JSB 15.9 with starting pressure of 2900psi and ending around 1700psi.

You know, now that you mention it, I've seen quite a few people mention that screw being loose.  I took mine apart at the very start, so I know mine hasn't been loose.  That could be where a lot of folks are having problems with creep and consistency?  I've never had issues with those things, and that could be part of the reason why.  Either way, good string you got going there!  Out of curiosity, have you tried it with a 220bar fill after you took the reg apart?

No...... my tank was at 3000psi I am going to fire up the Alatros booster today and refill my big tank. I will repost with a string from a 220 bar fill.