PGP Valve work

[Russell Hill]

Hello all,


I have an old Sheridan PGP pump which is very slowly being turned into a bolt action sniper, more for looks than performance really, however saying that I was wondering if anyone on here had done any valve tuning on the non-cartridge valve?

So far I have adapted it to run off constant air instead of the small co2s, I have already made myself an RVA and got a good few sets of different springs ready. As the gun is in bits anyway I would like to improve the valve.

So any advice on best way to do it? I have already enlarged the transfer port from the valve to the barrel but other than that it is a un-molested valve.


Thanks


Rusty

 

[Evil Rich]

Email Dan Bacci at http://www.baccipaintball.com/ I'm sure he can advise further

 

[Russell Hill]

Thanks. I'll give him a shout.

Would still appreciate if anyone else on here has any first hand experiance

 

[Canon Fodder]

I'm really struggling with getting mine up to velocity, not sure why, I'm good with cockers but for some reason not with this!

Anyhow most valve work is done for one of two reasons, one is efficiency which, since you've switched to constant air you shouldn't need as much as if you were running 12 grams, the other is to get velocity on double barrel builds.

I strongly suggest going to mcarterbrown.com and reading the Sheridan section in the armoury, if the answers not already there post a question and you'll likely have an answer by the end of the day.

 

[Russell Hill]

That is an awesome website. Thank you very much! As you say I'm not too worried about efficiency, would rather a better FPS on CA, will have to pick and choose the mods to do! I do know that even with CO2 it was hard to get more than a few shots above 260FPS, have you got an RVA, best thing I did to mine before I started 'pimping' mine! Glad to hear that someone else has a PGP, seems there are very few in the UK!

 

[Canon Fodder]

Yep I've got an RVA, think my problem is the bore size, I keep trying to pluck up the courage to knock a couple of dents in the barrel to stop roll outs but since getting a new body would be hard I'm not sure I want to risk deforming it.

 

[Russell Hill]

I know that problem! I was going to go down the route of a small hole in the side with a small sprung brass ball detent, screw in style so I can adjust how much presure on it. Bit like the pic below.
That but in brass if I can find one. http://www.ebay.com/itm/Stainless-Steel-Autococker-Ball-Detent-/281208560693?pt=LH_DefaultDomain_0&hash=item4179561c35

 

[Adrenochrome]

Sprung wire detent a la evo cocker is easier when not much metal to play with