Tuning Huma regulator in RAW

[Richieg]

Just received a Huma to install in my RAW. Went to Huma site and no information on installing in in the RAW air rifles. I also have a brass peice that I have no idea where it goes or what it does. I have had the factory RAW regulator out before to adjust it, but don't remember seeing this brass piece. Thanks for any help.

 

[Airgunmann]

There is a flat headed screw on the one side counter clockwise is higher pressure clockwise is lower pressure the brass piece then goes in over top the adjuster screw which is the end the bottle screws into seat it all the way down I screwed mine in with a little needle nose pliers threw the holes doesn't need to be super tight and the nipple goes out towards the bottle to open the bottle should say on the package what the reg is set at 

 

[Airgunmann]

1/4 turn counter clockwise is about 5 bar higher I believe

 

[Airgunmann]

Seems like my Huma reg is more consistent the lower the bar at 125 bar I get about 15 fps spread across about 60 shots at 150 bar it's about 30 fps spread 

 

[Richieg]

There is a flat headed screw on the one side counter clockwise is higher pressure clockwise is lower pressure the brass piece then goes in over top the adjuster screw which is the end the bottle screws into seat it all the way down I screwed mine in with a little needle nose pliers threw the holes doesn't need to be super tight and the nipple goes out towards the bottle to open the bottle should say on the package what the reg is set at

THANK YOU

 

[corny]

Will you be selling your oem reg? 

 

[Richieg]

No, will keep it. Will see if the Huma does any better. 

 

[corny]

So what are u looking to achieve? You do get a larger plenum with the huma reg…but not by much. 

 

[corny]

Why doesn’t the huma have an oring in the back of the 3/4 16 thread that goes into the action? I don’t know how else it would seal. There is no oring in the action. 

 

[PkShooter]

Maybe something to do with the actual reg core being inside the threaded area

my huma reg works as good as the raw reg, gives same power at lower pressure

 

[mubhaur]

RAW original reg works very good

 

[Richieg]

This is what the RAW regular is set now just shy of 140 BAR. I was told it should be set 125-130 BAR. I'm pushing .177 13.4gr. @ 800fps. I turned the factory reg.up 1/4 turn from when I first bought it ,tuned to shoot 13.4@ 800fps. ,because it started shooting off and I couldn't turn the hammer spring in enough to achieve 800fps. So I bought a Huma and screwed it into my Bob's Tester by hand to see what it was set to and adjust it and it screws in easy all the way. When I tried unscrewing it...it started getting hard to turn, finally got it out. Tried to install it in my RAW and Huma threads are F***ed up.SO...putting in my factory RAW regulator. I have been told to take out the hammer and spring clean and lube them , maybe that was the issue I was having, not sure.

 

[elh0102]

When you had the reg screwed in the tester, did you by chance have silicon lube on it? Reason I ask, it can cause gauling and seizing under high pressure. 

 

[mubhaur]

Molly grease works great for threads.

 

[Richieg]

When you had the reg screwed in the tester, did you by chance have silicon lube on it? Reason I ask, it can cause gauling and seizing under high pressure.

No it was dry. I now have some Nickel ani seize to put on the stainlessness threads.

 

[Airgunmann]

I'd email Huma mine got f-ed up and they sent a new one no charge just had to send them pictures mine wiped out the threads on the bottle was to dry I guess asked what to use am using antisieze now too

 

[Airgunmann]

Stainless steel can gall under high pressure that's same kind of thing happened to me when removing the bottle after about 6 times it doesn't come with any directions and I know silicone is no good so I asked for there opinion on what to use for lube and told them I live in the USA so shipping it back would be expensive for me to do and they helped me out with a new replacement

 

[Richieg]

I sent a email to them, explaining what I did. Will see how it all works out, but it's my fault the threads got screwed up.

 

[Richieg]

Molly grease works great for threads.

I have Molly 111 as well as Molly paste. But they have silicone in them... so I've read that's a no no on stainless. I bought some nickel anti seize.

 

[Airgunmann]

Why is it your fault they got screwed up all you did was take it out doesn't say lube this before installing or threads will gall