AA S400 reg?

[bezzer]

The problem with getting a third party regulator work efficiently with S400/500 is more to do with the removal of that bloody cap on top of the grub screw that adjusts the power externally. Unless one knows how to tackle the problem there is every chance that the valve block will be damaged. It is possible to leave it alone ( much safer from a legal point of view ) but then the full benefits of the regulator will not be had. The consistency will be there for sure but achieving the required efficiency to increase the shot count will be not be there.

A.G

As you say it's a waste of time trying to reg an Air Arms without removing the anti tamper. I used a mill to do my 400 and HFT so it could be drilled spot on and wouldn't attempt it any other way to avoid other damage. Adjusters removed and blanked off so everything is altered by spring and hammer settings so other than completely stripping it down and swopping parts you can't alter the power. The only way power can raise is through temperature and being set at 11.3 fpe it should still stay below, or if the reg fails letting more air through which would show on the gauge.

[rgc_swanseaARC]

Have a word with Simon (tweaky)

Best reg I have ever put in my AA's (s410k, MPR,)

Regards,
Rhys

[bezzer]

Have a word with Simon (tweaky)

Best reg I have ever put in my AA's (s410k, MPR,)

Regards,
Rhys

Bet that was a while ago, Simon "Tench" Howarth hasn't been "Tweeky" for some time. He doesn't do AA regs any more, he's a member of our HFT club, I tried but failed but I did get a lot of info/help off him when I first did mine.Top bloke.

[rgc_swanseaARC]

Bet that was a while ago, Simon "Tench" Howarth hasn't been "Tweeky" for some time. He doesn't do AA regs any more, he's a member of our HFT club, I tried but failed but I did get a lot of info/help off him when I first did mine.Top bloke.

Yes a while back, but there are ways lol
As I understand it ratworks are now installing his design of regs... But he's still the man you want to talk to as you say above.

[Rich]

As you say it's a waste of time trying to reg an Air Arms without removing the anti tamper. I used a mill to do my 400 and HFT so it could be drilled spot on and wouldn't attempt it any other way to avoid other damage. Adjusters removed and blanked off so everything is altered by spring and hammer settings so other than completely stripping it down and swopping parts you can't alter the power. The only way power can raise is through temperature and being set at 11.3 fpe it should still stay below, or if the reg fails letting more air through which would show on the gauge.

If the reg fails and lets more air through isn't it likely the power will drop? The hammer isn't used to taking on such resistance......

... and there's a tool that sounds like LEMERD that can be quite useful in sawcutting a screwdriver slot, anywhere you find it necessary. Needs care though.

[bezzer]

If the reg fails and lets more air through isn't it likely the power will drop? The hammer isn't used to taking on such resistance.....
..

Depends on what the cylinder pressure was at the time the reg failed as to whether it goes up or down.

[Archer50]

I've had an Altaros reg in my S400 for many, many shots over about 2 years and so far no problems. It maintains a constant pressure in the plenum from 200 bar cylinder pressure down to whatever you have set it for, and that's all you can ask of any regulator. All the other advantages of a regulator come from what you do to the gun having fitted it rather than from the regulator itself. In my opinion, if you are just going to 'drop it in' you are probably wasting your money - with an AA 'S' series gun you would be better spending your time balancing the hammer and valve springs and making sure every part of the firing mechanism is totally grease-free.

Alan

[lensman57]

I've had an Altaros reg in my S400 for many, many shots over about 2 years and so far no problems. It maintains a constant pressure in the plenum from 200 bar cylinder pressure down to whatever you have set it for, and that's all you can ask of any regulator. All the other advantages of a regulator come from what you do to the gun having fitted it rather than from the regulator itself. In my opinion, if you are just going to 'drop it in' you are probably wasting your money - with an AA 'S' series gun you would be better spending your time balancing the hammer and valve springs and making sure every part of the firing mechanism is totally grease-free.

Alan

I agree 100%. Robert Lane actually offers custom made bolt and hammer bits to make the best of his regulators for S400.

A.G

[TenMetrePeter]

I'm glad there's several of us discussing how to remove it. Can't ban us all hopefully.

I'm confident that capping it with a short screw is quite legal provided a regular chrono test is recorded on paper and energy kept around 11 for safety, though a knob in the form of a long cap head screw would be very unwise. Logging chrono readings id an owners responsibility even with anti tamper plugs in.

FWB target pistols have a great big screw in the grip that can take them over 6. Legal design presumably as they are 《F》rated.

My S400 target rifle cant get much over 6 yet it still has anti tamper. Why?? Took mine out because it drifted down to 3 over 2 year period.

I would be interested in seeing the statute regarding requiring removing stocks to alter the muzzle energy.

[lensman57]

External powwer adjusters in themselves are not illegal so long as they alter the power within the legal limits set for the gun. Brocock and some others have some sort of gimmicky power adjusters to enable them to reduce the power for shooting vermin within confined spaces by restricting the airflow . The one on S400/500 series of guns can dramatically incerase or decrease the power therefore they are illegal if direct access is provided to alter the power on the go . If the security cap has been removed the adjuster must be recapped after the adjustment for the regulator has been made. Better be safe here as we are dealing with a ' firearm'.
This might help or not:

https://shooting-the-breeze.com/thre...djusters.5150/


A.G

[lensman57]

As you say it's a waste of time trying to reg an Air Arms without removing the anti tamper. I used a mill to do my 400 and HFT so it could be drilled spot on and wouldn't attempt it any other way to avoid other damage. Adjusters removed and blanked off so everything is altered by spring and hammer settings so other than completely stripping it down and swopping parts you can't alter the power. The only way power can raise is through temperature and being set at 11.3 fpe it should still stay below, or if the reg fails letting more air through which would show on the gauge.

That is the way I removed mine. A milling machine and a carbide end mill at very high speed. I wonder if a left handed drill would have been a better choice.

A.G