FD PCP question

[silent_airman]

Probably an unnecessary question, but I will ask for safety's sake. Is it safe to use a 20oz CO2 tank with a remote fill line on an FD PCP? I assume it is dual fuel, but you know what assuming can do! I don't have a tank regulator to step from 4500 down to 1500 yet. Since the weather is warming up I am playing with CO2 again. I have the tank and remote line already. The gun's tank is empty, so I can fill with CO2 if it is safe to do so. Thanks and I appreciate any input and advice since I am still new to PCP.

[Yarp]

The FDPCP was adapted from a CO2 rifle, but I've never read that it's set up for dual fuel use.
Why not ask Mike directly?
   Flying Dragon Air Rifles
   Phone#- 515-924-3699
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[rsterne]

If you do at some point use a regulator, make sure it is equipped with a 1.8K downstream burst disc so that you don't end up with 4500 psi in the gun if the regulator fails....

Bob

[fishcrf450r]

Fd pcp runs fine on co2 .
Make sure to hold paint ball tank up side down when you fill the gun .
You get more shots with less power .
I had to open the exhaust on the valve to get the power up because i ordered a high shot count gun .

[silent_airman]

This gun has always been hard to cock, and now I can't cock it at all. It goes back and then stops about a half inch from the bolt being fully open. Anyone else have issues with their rifle doing this?

[Ribbonstone]

Only test I’ve done (in .22) used a remote line, but (other than the number of shots) would get the same results from a bulk fill.







Of course, the attached 20oz co2 tank would have kept going on and on and on.

Considering the rifle was made to work well with 1500-900psi air, it shouldn’t be a surprise it works with warm weather co2.  Pressure is in range, just that the thick nature of co2 doesn’t flow as well/as fast as the thin nature of compressed air (basically, co2 is kind of “thick” compared to air).

[Rayc384]

On the cocking problem, I remember reading something about the version 1.  There was some parts left in the gun from the safety mech.  I think it was under the FD Vendor gate. Something to check. 

You can easily eliminate the trigger assy by taking it off.

[Ribbonstone]

That's a good test.

If you take the trigger all the way off the rifle and then see if the bolt will travel all the way to the rear (it won't "catch" so you'll just have to ease it back down) then the problem is in the trigger.

If it's a 2nd generation with a safety, then it's most likely the safety system (it's not the beefiest system, and some of the little parts that run it are likely to bend/crack).

If it still won't let you pull it all the way back, then the problem is likely in the striker spring/spring guide assembly.

[silent_airman]

I can cock it now, but it is very hard and not at all smooth. The bolt seems quite 'loosey-goosey'. I am accustomed to my QB 79 and AR2078, which are a lot tighter and smoother. I will depressurize the gun and see what I can find by removing the trigger group. Thanks guys.