PP700sa regulator fix

[nervoustrigger]

Well I just had to see what it will do with more magnification so I checked the closet and spotted a little 3-9x32 AO scope, so off came the 4x crossbow scope and here it is:



This Bugbuster knockoff doesn't have very good glass but it has a mildot reticle to give me some useful aim points and it looks right at home.

After getting it zeroed with the RWS Supermag wadcutters, I spent the afternoon plinking with it off and on.  With some practice it was hitting a string of 3/8" Mardi Gras beads at 25 yards about 4 out of 5 tries, and it gave me a bunch of groups from 3/8" to 1/2".  Plenty good for chipmunks and house sparrows at that distance.  It also gave me this little 0.26" CTC (1 MoA) group so I think I can live with it like this for a while!

[WesBob]

Wow! That's awesome! 

[walleye4us]

Thanks Jason, so no shoulder stock yet? It was supposed to be 5-7 days I thought. Seems like more than that now. Looking forward to you and the others getting your stocks, see how you like them. On the Canadian airgun forum, some guys have a thread, started by Hobbyman2007 (oops, actually Leadslinger with contributions from Tazz) , on tightening up the slop on the stock and putting a rubber stopper on the side to protect the gun when folding it.
Cheers,
Wes

drill and tap two holes beside bolts that hold stock on and install two grub screws. Slop is gone .At fold point put apiece of elastic band between two hinge points and all slop is gone in stock. Dam thing was driving me nuts.

[Rick67]

VASH  has a nice looking stock for this pistol but I think it is too low.

[Harold999]

Can you shoot it with the regulator removed if you're not interested in shot count, just max power.

[Rallyshark]

Can you shoot it with the regulator removed if you're not interested in shot count, just max power.

Technically, yes, BUT you will have to make a part to seal the gun if you remove the regulator parts.  If you just keep turning up the regulator, it will reach the point of bypassing the reg.  That is would be easier than making a piece to get it to seal without the regulator parts.  Keep in mind, that can damage the regulator washers though. 

[Harold999]

Can you shoot it with the regulator removed if you're not interested in shot count, just max power.

Technically, yes, BUT you will have to make a part to seal the gun if you remove the regulator parts.  If you just keep turning up the regulator, it will reach the point of bypassing the reg.  That is would be easier than making a piece to get it to seal without the regulator parts.  Keep in mind, that can damage the regulator washers though.

I have tried to get as much power as possible with the regulator still in it, but 13fpe is all i got with a .22.
Hammerspring almost maxed out, allen screw of the reg clock wise till the end (and also tried anti clock wise till the end), but it won't go over 13fpe.
What could be the issue here?
The transfer screw at the top of the swinging breech is at level of the breech itself, so it's open.

[Pelletjunkie]

If you are still using to stock reg, that’s the problem. It’s not capable of going 130-150 bar to get max regulated power.

[Rallyshark]

Can you shoot it with the regulator removed if you're not interested in shot count, just max power.

Technically, yes, BUT you will have to make a part to seal the gun if you remove the regulator parts.  If you just keep turning up the regulator, it will reach the point of bypassing the reg.  That is would be easier than making a piece to get it to seal without the regulator parts.  Keep in mind, that can damage the regulator washers though.

I have tried to get as much power as possible with the regulator still in it, but 13fpe is all i got with a .22.
Hammerspring almost maxed out, allen screw of the reg clock wise till the end (and also tried anti clock wise till the end), but it won't go over 13fpe.
What could be the issue here?
The transfer screw at the top of the swinging breech is at level of the breech itself, so it's open.

You could try following the instructions on Huma's site for the install of their reg.  They walk you through bypassing the regulator I think?  Frank, how did you do yours when you installed the Huma? 

I removed ALL the regulator parts on mine and fashioned a PEEK plug with an o-ring that fits under the the reg adjustment screw to seal mine, so I'm can't remember what the recommended process is for installing the Huma   

This wouldn't happen to be a Canadian gun would it?  I've seen some of the factory guns doing well over the 13fpe max you're getting.  I wonder if there is a breach leak happening or something.

[Pelletjunkie]

I arranged all the washers in the same direction and tightened the adjustment screw tight. Then on the air tube side I took the little screw out that holds the white disc, dropped in an oring that fit nicely against the threads, centered the white disc and put the cap/plug thing back on as tight as I could. No leaks and everything is good. That’s how Rocker1 did it and it seemed to be the most simple.

[Harold999]

Can you shoot it with the regulator removed if you're not interested in shot count, just max power.

Technically, yes, BUT you will have to make a part to seal the gun if you remove the regulator parts.  If you just keep turning up the regulator, it will reach the point of bypassing the reg.  That is would be easier than making a piece to get it to seal without the regulator parts.  Keep in mind, that can damage the regulator washers though.

I have tried to get as much power as possible with the regulator still in it, but 13fpe is all i got with a .22.
Hammerspring almost maxed out, allen screw of the reg clock wise till the end (and also tried anti clock wise till the end), but it won't go over 13fpe.
What could be the issue here?
The transfer screw at the top of the swinging breech is at level of the breech itself, so it's open.

You could try following the instructions on Huma's site for the install of their reg.  They walk you through bypassing the regulator I think?  Frank, how did you do yours when you installed the Huma? 

I removed ALL the regulator parts on mine and fashioned a PEEK plug with an o-ring that fits under the the reg adjustment screw to seal mine, so I'm can't remember what the recommended process is for installing the Huma   

This wouldn't happen to be a Canadian gun would it?  I've seen some of the factory guns doing well over the 13fpe max you're getting.  I wonder if there is a breach leak happening or something.

No not Canadian, it should be an unrestricted version.

One thing i noticed is that if i unscrew the transfer port choke on top of the swinging breech, and look inside, i can't see the transfer port. It will only be fully visible when i move the swinging breech to the side.
Is that normal?

[Pelletjunkie]

The design of the valve with the all the holes captured between 2 orings is that none of them has to be facing straight up.

[Harold999]

Okay, so it looks like i can't bypass the reg with the adjustment screw in the trigger housing, so i decided to take the air cilinder off and rearrange all the rings in the reg in the same direction, that should do it i heard.
The air cilinder is off and now i must unscrew the reg, but holy cow that thing sits tight. Any tips of how to unscrew it?

[Pelletjunkie]

Strap wrench. Mine was tight also.

[Harold999]

Okay, just removed the valvestem (the pin/screw which goes through the white valve), put the gun back together, filled to 100 bar to check for leakage, and took some shoths.
Got 13 fpe which i thoughg was hopefull, because there was "only" 100 bar in the cilinder. So filled to 200 bar and took some shots again and got... 7 fpe.
I'm lost...

[Pelletjunkie]

You don’t have enough hammer spring to crack the valve at 200 bar/3,000psi. Your hammer spring is designed to crack the valve from 1,000 to 2,000psi or 80 to 130 bar. Remember this gun was designed to be regulated.

[Pelletjunkie]

Just out of curiosity, measure the transfer port hole that faces the back of the pellet. Let me know how big it is.

[Harold999]

Just out of curiosity, measure the transfer port hole that faces the back of the pellet. Let me know how big it is.

Around 5mm (3/16").

[Harold999]

You don’t have enough hammer spring to crack the valve at 200 bar/3,000psi. Your hammer spring is designed to crack the valve from 1,000 to 2,000psi or 80 to 130 bar. Remember this gun was designed to be regulated.

Okay, but i see some guys getting +20fpe, how do they do that? Bigger hammerspring?

[Pelletjunkie]

Well your TP is the size it should be. Just trying to figure out why you were not getting what you should have out of your gun with the reg still in use. You should be able to shoot a 18gr pellet close to 650fps. Even with the stock crapper reg for 20 shots. They key is not over adjusting or under adjusting the stock reg. It has a very small operating range. Guys put that wrench in the trigger guard and twist that screw too much. Moving a Huma up or down 10 bar is just a tiny move on the screw. The stock reg is no different. This pistol unregulated is a big step backwards in my opinion. If I were you, I would put a Huma in it, then you know where it is set. Set it at 130b and go from there.