Mag Regulator Question

[Ando]

Now don't let me crush your dreams brother. There's always peel shims you could use to get the PSI where you need it. Problem with that is finding them. I work at a military base. Give me the dimensions on the shims and I'll see what I can come up with.

[sslecyk03]

Now don't let me crush your dreams brother. There's always peel shims you could use to get the PSI where you need it. Problem with that is finding them. I work at a military base. Give me the dimensions on the shims and I'll see what I can come up with.

Awesome. So the deal with those would be that I would adjust my input pressure (by peeling the shims) until I am in the correct velocity range? Wouldn't I need a certain psi to the valve though? I'm a little confused on that still.


Edit: To clarify, say that I need to input 400psi to the valve, how would I then change the velocity if I have to keep the psi at 400?

[Ando]

The shims in a ninja and other adj regs like it, adj the output pressure to your marker.

I don't know the dimensions of the shims in a ninja so theatrically speaking. If all the shims are .200 and each shim increases the pressure by say 300 psi. With a peelable shim, each layer is .010 so every layer will bring your pressure up or down by 15 psi. That should get you in the ball park for your FPS.

Again...Finding the correct shims is going to be your only issue, well besides modding the back of the valve

[kcombs9]

"To clarify, say that I need to input 400psi to the valve, how would I then change the velocity if I have to keep the psi at 400?"

You cant. the pressure you put into the valve is the operating pressure and your velocity.

ie : at 400psi from tank you shoot at 250fps you bump your tank up to 450psi your velocity go's up.

These figures are hypothetical.

[sslecyk03]

"To clarify, say that I need to input 400psi to the valve, how would I then change the velocity if I have to keep the psi at 400?"

You cant. the pressure you put into the valve is the operating pressure and your velocity.

ie : at 400psi from tank you shoot at 250fps you bump your tank up to 450psi your velocity go's up.

These figures are hypothetical.

I see... so basically I have to hope that whatever input pressure I need will also put me in the correct velocity range? Hopefully that isn't too much of a longshot. I hate to keep asking this but I really want to know what input pressure I need. I know mags like 850+ psi but without the reg I would need the value that the reg outputs to the valve, correct? So what psi is actually going into the mag valve: 400? 500? I'm kinda lost here. Thanks for the help so far though guys.


And just so you guys know I will be halving the valve on this little guy:


Can't wait till it is finished and I can send it in to ano.

[kcombs9]

"The regulator basically breaks down the 800-3K PSI to about 400-450 from what I've been told. That is what the pin lets in."

from the 2nd link posted earlier.

[sslecyk03]

"The regulator basically breaks down the 800-3K PSI to about 400-450 from what I've been told. That is what the pin lets in."

from the 2nd link posted earlier.

Perfect, thanks man. I should have done a little better reading I guess. Now I just have to figure out what velocity 400-450 psi will equate to, and hopefully it is around 275-300. Thanks again.

[cdc120602]

What about an inline regulator? Wouldn't that allow him to screw the Ninja reg in and adjust the output? I don't think there'd be any weight or size savings with that, but the results should be there.

[kcombs9]

What about an inline regulator? Wouldn't that allow him to screw the Ninja reg in and adjust the output? I don't think there'd be any weight or size savings with that, but the results should be there.

yes it would but would still need to be set to that 400-450psi. the weight gain is all in having an adjustable tank. and small front grip.

IMO this would be a great mod for a rifle mag.

[sslecyk03]

What about an inline regulator? Wouldn't that allow him to screw the Ninja reg in and adjust the output? I don't think there'd be any weight or size savings with that, but the results should be there.

It is hard to see in the pic but I am running my airline straight up from my unimount into the grip frame and out under the rail on the other side (which would go straight to the valve if it was there). This is why I want a screw in adjustable and not an inline reg because I would have to re-route that line. It was a bit of work to hide all the airline and I want to keep it that way if I can.

[sslecyk03]

So apparently ninja regs don't work well under 500 psi....could I just buy a LP tank that outputs 450 or so and bypass having an adjustable reg?

[reckid1986]

your best bet would start with a low psi say around 300 or maybe lower. see if the gun fires, if it does check it over a chrono. and increase or decrease psi from there to get the velocity you want. you would need and adjustable tank to do that.

the lp tank would work if thats the psi needed but you should try an adjustable one first so you can pinpoint it.

[sslecyk03]

your best bet would start with a low psi say around 300 or maybe lower. see if the gun fires, if it does check it over a chrono. and increase or decrease psi from there to get the velocity you want. you would need and adjustable tank to do that.

the lp tank would work if thats the psi needed but you should try an adjustable one first so you can pinpoint it.

Good point, I'd be screwed if the velocity was too high/low. Now I just need to find a screw in tank (or just the reg) that is adjustable to the 300-450 range. If anybody knows of one please please let me know. Thanks again you guys are awesome.

[smeek]

So apparently ninja regs don't work well under 500 psi....could I just buy a LP tank that outputs 450 or so and bypass having an adjustable reg?

If you can't adjust pressure you can't adjust velocity.

I also have my doubts of running an adjustable tank without a secondary regulator. I've tried that with a crappy adjustable ACI bulldog II screw in back when I shot my model 98 and it couldn't even keep up with the gun, I had massive shootdown and other issues until I put in a secondary reg and upped the tank output. For this to work at all you can't skimp on the tank you need something high flow/quality like a flatline, dyna/hyperflow, conquest or Geddon, and even then I still have my doubts as to the performance of running just the tank regulator.

You're asking a lot out of some springs and orings regulating 4500 psi down to 400ish psi consistantly throughout the pressure range as the tank empties. You're likely to run in to chrono issues as the output pressure changes slightly as the tank pressure gets lower. The standard practice of regulating the 4500 to 800 than to the guns operating pressure is a safety factor and also performance factor in my opinion. If the reg on the tank fails you are now dumping way too much pressure straight into the valve.

[sslecyk03]

If you can't adjust pressure you can't adjust velocity.

I also have my doubts of running an adjustable tank without a secondary regulator. I've tried that with a crappy adjustable ACI bulldog II screw in back when I shot my model 98 and it couldn't even keep up with the gun, I had massive shootdown and other issues until I put in a secondary reg and upped the tank output. For this to work at all you can't skimp on the tank you need something high flow/quality like a flatline, dyna/hyperflow, conquest or Geddon, and even then I still have my doubts as to the performance of running just the tank regulator.

You're asking a lot out of some springs and orings regulating 4500 psi down to 400ish psi consistantly throughout the pressure range as the tank empties. You're likely to run in to chrono issues as the output pressure changes slightly as the tank pressure gets lower. The standard practice of regulating the 4500 to 800 than to the guns operating pressure is a safety factor and also performance factor in my opinion. If the reg on the tank fails you are now dumping way too much pressure straight into the valve.

Also good points and makes a lot of sense. Let's say that I use my standard preset tank, are there any regs that are small enough to fit in my trigger frame that would be sufficient to lower the psi?

Edit- may have answered my own question. Looks like the aka 2 liter is very small, handles up to 900psi input and up to 500 output, which would be perfect. I believe I could fit it in my trigger frame as well with an asa on top of it to route the line to the valve. Can anyone confirm if this would work?