Plugging up an A.I.R.

[GoatBoy]

I'm trying to figure out how to plug up the back half of the A.I.R. I'm using a a Palmer's Stab to regulate pressure, so that back half or the mag is pretty much dead weight. I'm switching to an AA reg back which is supposedly lighter, but I'd like to also get rid of the reg nut, piston and spring pack back there to further reduce weight. Problem is... how do I plug up that hole in the back half? Preferably not permanently, so I can switch back and forth.

[questionful]

Tap the input hole on the front half? Only thing I can think of. You could make a male threaded cap like that one dude did, but that would be more expensive.

[Spider-TW]

So, you get rid of the reg pin, seal and spring, and you get rid of the spring pack and you need the seal provided by the reg piston and the adjuster, yes?

You might be able to find a aftermarket locking velocity adjuster that doesn't have a allen hole in it. If an oring around the adjuster threads won't hold the pressure with just a squeeze, you could have a groove machined in it.

You really just need a plug the size of the big reg threads, don't you?

[GoatBoy]

Well honestly I think all I need to do is figure out how to plug that little hole that the reg pin goes into (it's the one in the very middle). If I plug that, I figure that should do it... Just need to figure out a good way to do it.

[jade_monkey07]

for some reason i dont see that working out too well.

[questionful]

Ooooh, I see what you mean. You want to keep the valve back.

I've got an idea. Drill a hole from the input on the valve front to the channel that goes from the valve back to the on/off. Then you can plug up the hole in the center of the valve back from the front, where the reg seat sits. JB weld a small disc on there for example. That wouldn't come off. And to make it not permanent, you could tap the hole you drill and plug it with a well-loctited/tefloned grub screw. You would also have to tap the channel in the valve front that goes to the on/off, and seal that with a grub screw when you're running the stab.

Just an idea. I hope I explained it well enough.

For reference:

http://www.zdspb.com/media/tech/animations/automag1.gif

[GoatBoy]

Ooooh, I see what you mean. You want to keep the valve back.

I've got an idea. Drill a hole from the input on the valve front to the channel that goes from the valve back to the on/off. Then you can plug up the hole in the center of the valve back from the front, where the reg seat sits. JB weld a small disc on there for example. That wouldn't come off. And to make it not permanent, you could tap the hole you drill and plug it with a well-loctited/tefloned grub screw. You would also have to tap the channel in the valve front that goes to the on/off, and seal that with a grub screw when you're running the stab.

Just an idea. I hope I explained it well enough.

For reference:

http://www.zdspb.com/media/tech/animations/automag1.gif

Yeah, I think I see what you were saying. Bit more work than I would like though. I think I have some other ideas rattling around though.