Difference in behaviour of regulated Royale 400 and regulated Royale 500

[mubhaur]

Dear Sir,

I have bought 500 as well and installed regulater in it set at 160 bars. There is a difference between my 400 and 500. When I remove the bottle from 400 there comes sound of air release. It’s quite normal. When I further remove that plastic threaded part which is joined with one end with the bottle and other end with the action and has quick fill connection in it, there comes no sound of release of air pressure.

In my royale 500 air release on removal of bottle is same as with 400. But when I remove the plastic part there again come out high pressure of air from it.

I need to know which one is behaving correctly?

400’s regulator takes a few seconds to recover after each fire while 500’s regulator takes no time to be ready for next shot.

If any one gun has problem what do you advise to rectify it?

Thanks and regards,

Umair Bhaur

 

[hsnmz]

When the regulator is sealed shut there is only one way for the regulated air to escape and that is through the barrel. Air can not escape towards the unregulated end because the regulator is sealed shut. So when you remove the bottle the air on the regulated side pushes the regulator towards the fill valve assembly. If there is room between fill valve and regulator the regulator will move and air will escape through the breathing hole near the guage or from the fill valve. If the regulator and fill valve are snug then regulator will only move back when you start removing the fill assembly and that is when the air on regulated side will leak through the breathing hole or the fill valve.
Hope I was able to explain it right.
Your both guns may be behaving perfect. Regulator setting slow happens when we adjust the regulator and the piston seat moves from its original position.

 

[mubhaur]

hsnmz thanks,

Your reply is very helpful sir. Now I can understand the cause between the difference in behaviour.

Please advise how can I correct the regulator which recovers after many seconds of firing the gun?

Regards,

Umair Bhaur

 

[hsnmz]

How long it has been since you adjust it last time? It usually gets better with use. Takes at least 500 shots to get set.

 

[mubhaur]

I have shot less than 500 pellets. I hope it will get better with time and usage.

Thanks sir.

 

[hsnmz]

"mubhaur"I have shot less than 500 pellets. I hope it will get better with time and usage.

Thanks sir.

You are welcome. It is advisable that when adjusting the regulator do not let the piston, the inner brass piece where you stick the allen key, rotate. Just rotate the outer nut.

 

[mubhaur]

Dear Mr. hsnmz,

In fact I opened the regulator and replaced the internal O rings.

 

[hsnmz]

"mubhaur"Dear Mr. hsnmz,

In fact I opened the regulator and replaced the internal O rings.

were they leaking

 

[mubhaur]

Yes there was a problem with one of the O rings. I got the sizes from Mr. Earnest and replaced both the O rings of the piston. I used NBR 70 shore O rings. 

 

[mubhaur]

Sizes used are
2.90 x 1.78 70 shore
6.10 x 1.60 70 shore

 

[hsnmz]

"mubhaur"Sizes used are
2.90 x 1.78 70 shore
6.10 x 1.60 70 shore

That's a useful info, thanks