Slowing down an X Valve

[captian pinky]

you are using the lvl 7 powertube tip correct?

[athomas]

The powertube tip should fit all bolts without any sticking. If it sticks then there must be a burr somewhere or it is out of round.

[TimmyJay]

I got a new gauge on my dynaflow and it is currently around 500 psi. I had to turn it down as the pressure was well over the new 600psi gauge I put on. That would explain the reactiveness along with the RT on/off. I plan to trade my RT on/off for the modified RT on/off that BT has and see if that helps eliminate the reactive trigger. I put in a new spring and powertube oring. Oiled it up and everything cycles like a champ. I still want to change out the powertube tip and/or bolt just in case.

What is the lowest pressure to have a properly functioning valve? AGD's site states 800 then I read about 400-450psi and then I saw something about 375? If the mag fires at (350psi?) then I would think 450 is about as low as you would want to ever consider. I hope to hit a chrono tomorrow and see where I am for fps as well.

[GoatBoy]

I got a new gauge on my dynaflow and it is currently around 500 psi. I had to turn it down as the pressure was well over the new 600psi gauge I put on. That would explain the reactiveness along with the RT on/off. I plan to trade my RT on/off for the modified RT on/off that BT has and see if that helps eliminate the reactive trigger. I put in a new spring and powertube oring. Oiled it up and everything cycles like a champ. I still want to change out the powertube tip and/or bolt just in case.

What is the lowest pressure to have a properly functioning valve? AGD's site states 800 then I read about 400-450psi and then I saw something about 375? If the mag fires at (350psi?) then I would think 450 is about as low as you would want to ever consider. I hope to hit a chrono tomorrow and see where I am for fps as well.

The number I saw floated around was at about 650, the RT behaves just like a classic.

When I used an adjustable tank (Nitro Duck X-Stream) I had mine turned to around 725 which kept all RT effects pretty much tuned out/down.

[athomas]

A mag with a level 7 bolt operates around 350 - 375psi. That number could be higher if you use a barrel with a short control bore and lots of porting. A level 10 mag operates around 500 - 550psi.

A level 7 mag should have around 550 psi coming into the valve to maintain a good flow rate, and even more if it has lots of porting. A level 10 mag should have about 700psi or more.

[TimmyJay]

This mag is still really snappy at 500 psi. It must be due to the RT on/off. After my first pull I can lightly tweek my finger and it feels kinda bouncey. Sounds like I am in the ballpark so the chrono will be the real test. I am currently using a 14 inch freak with a proper fit insert.

Thanks for the continued support.

[GoatBoy]

There's the chamber pressure, and there's the AIR input pressure, which I think athomas was referring to.

At 500 PSI, you might starve the gun as the AIR might be a flow restriction.

You would want to gut the AIR and go direct input to get around this, but I think this is not advisable as the full->empty output swing of a single HPA regulator will be too great.

So you're left with trying to feed the AIR at a high enough input pressure so it's not restricting you. I would just bump it to 700.

[TimmyJay]

I hit the chrono today and I had to turn it up to 600+ to get anything consistant. It is still all over the board 255-300 range. Too many things to trouble shoot so I think I will get a new ninja reg and see if that helps. I think I need a new bolt too.