Problem with vulcan 2 Tactic 30 Cal Regulator.

[Emu]

The regulator of the Vulcan 2 Tactic .30 Cal I bought 2 years ago is not regulating the shots anymore.



It was giving me 19 consistent shots at about 80 foot pounds, but now is giving 9 shots and consuming a lot of air.



I have seen in Youtube some videos of how to take the regulator out of the air cylinder of the rifle. But I do not have any idea of what to do once it will be out. 



Is there something I could try in order to make to the regulator to work properly again or should I just buy a new one in the market (a Huma regulator maybe)?



I really would appreciate your advice!

 

[Odoyle]

Are you most certain your manometer on the gun and your tank are reading accurately and you are filling enough air?

Try filling another gun to see if the tank gauge is accurate.

What do the chrony numbers look like?

 

[Jlacouturec]

it can be the orings that goes on the piston of the regulator, these orings are the ones that seals after each shot, if one of those is not working, your rifle may work as a NON regulated rifle.

 

[Emu]

I am fillig it to 250 Bar. Two manometers (rifle and tank at the exit) other rifles filled with the same tank and manometer.



The 9 shots it´s giving are about 885 fps with JSB 44.75 grain.

 

[Odoyle]

What's the first 20 shot chrony string look like?

I would borrow a friend's tank to fill it and go by the tank gauge.

Still sounds like the gun manometer may be off calibration if it's shooting regulated for 9 shots. How much are you filling it to exactly?

 

[Odoyle]

Fill it to 300 bar and run it over the chrony post first 30 shot chrony numbers.

 

[Centercut]

18 to 20 shots is correct for a stock .30 Vulcan2 with 250 bar fill. You can rebuild the reg, or just replace it with a Huma. Your choice. The Huma is much easier..,

 

[Odoyle]

How does the regulator regulate properly for 9 shots and waste air?

If the gun just had a leak elsewhere that would make sense for less shots and still regulated.

 

[Odoyle]

I would think a factory HDD or slingshot hammer system or whatever the Vulcan uses would be the culprit before the regulator that still seems to work as it should. 

 

[Mrshosted]

Sounds like dirty wet HPA has been used. I guessing a good cleaning and lube job and a o-ring or two replaced will fix it. 

The Vulcan's are well built machines, there no need to jump to conclusions.

 

[Odoyle]

https://youtu.be/m4aU4oT11NE

https://youtu.be/2TO6XkmRQOA

 

[Emu]

Let me share with you the advance on this topic.

I ordered from Huma the regulator for the Vulcan Tactic 2 .30 Cal. I asked to be sent at 160 bar.

I changed the regulator and the numbers I obtained were really similar at the ones with the original regulator. Not good!

Then I reduced the tension on the spring of the hammer in order to shoot the JSB's 44.75 grain at 826 fps. (About 69 foot pounds).

Now, filling at 250 bar, I am getting 35 regulated shots and 37 shots hit the same spot at 70 yards. With less recoil.

69 foot pounds are enough for coyote and Jabalina with the proper head shot placement.

I am satisfied with the result: many shots per fill and enough power for the caliber of the rifle.

Regards.