Tuning RAW HM1000x - Fill Pressure Max.

[SpiralGroove]

I have two RAW HM1000xLRT rifles with suggested fill pressures of 230 bar listed in the owners manual. However, if you go to the RAW website it shows their Carbon Fiber Tanks having a fill pressure maximum of 250 bar. This contradiction suggest the RAW regulator doesn't like fill pressures above 230 bar - Right?



I would love to be fill my tanks up another 20 bar to 250 bar, but don't want to kill my ES or worse ... damage the regulators.



I apologize in advance if this has already been answered. If not, does anybody know ....or have OEM RAW regulator performance above a fill pressure of 230 bar?

- My regulators use set-points of 120 and 140 bar respectively.

Kirk

 

[SpiralGroove]

Guys, just looked at the RAW website - both the 480cc carbon fiber tank and the regulator have 250 bar limits; however the owners manual (from last months purchase) and Pyramyd Air website state the fill pressure is 230?

Sounds like the manual and Pyrmyd Air are out of date?

If yes, has anyone noted a ES performance change above 230 bar?

 

[stoti]

We asked the same question when my son got his RAW, it can be safely filled to 250BAR. It is and has always been, one of our most accurate air guns when filled to 230BAR or 250BAR! 
Stoti

 

[dizzums]

you could always screw a bigger tank on it if your concerned about a few extra shots .. you got to work with me here .. with the proper mods we're talking approaching 1000 shots per fill plus lol ...

 

[Airgunmann]

I have had es as low as 12 across 40 shots with a 3500 psi fill and mubhaur was saying his was right around the same es with 3500 psi fill for like 60 plus shots I'd remember right one shot put him up to 12 or something otherwise he was in single digits so it shouldn't effect your es

 

[Airgunmann]

Only recently when I changed regulator pressure and added a power plenum for more efficiency has my es suffered so I may need to up my reg pressure again and or swap out to heavier valve return spring as mubhaur has done 

 

[SpiralGroove]

Thanks Guys,

Excellent news, I can increase my medium powered, .25 cal RAW HM1000x beyond the 96 shots per fill (ave. 955 fps) using 25.39 JSB's.

So thinking I'll get another 12 to 18 shots with the extra 20 bar.

 

[mubhaur]

I always fill my RAW to 250 bars. Specially after rebuilding the original reg and a bit of its upgradation, I get around 70 shots with 34 grain .25 jsb at 60 ftlb.

As far as Huma regs are concerned, my experience with them has been good as well as bad.

Huma uses a very soft regulator seat. It gives very good results at initial stage. But I have experienced that my RAW original reg gives me more consistency for a complete shot string than my Huma reg of fx Royal 400.

So I stick to original reg with some upgrades.

Similarly for fx impact the AMP reg performance is better than Huma reg in my hands.

Regards, 

Bhaur

 

[elh0102]

Martin did some work on my HM1000 last year, and also installed a CF tank. He said I could safely fill to 250 bar. My RAW regulator has been one of my most consistent also.

 

[SpiralGroove]

Thanks Everyone ... Kirk

 

[BK_SouthBay]

RAW HM1000x LRT fill pressure and gauges

In an abundance of caution I checked with Martin of Airguns-USA to confirm current (2022) RAW HM1000x airguns could safely be filled to 250 BAR. Here is his response.

“Yes the guns are rated for 250 bar if they have a bottle fitted that is capable of those pressures, the 480cc CF and the 500cc Aluminum are rated for that.”

As to the accuracy of the on gun gauge versus the gauges on my external regulator, his response is below.

“I would go with the external one, those small gauges no mater who makes them are not great, they get the job done though.”

I make no representation or warranty about the accuracy or sufficiency of this information, all parties are urged to conduct their own independent investigations.