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Air Gun Home Forum Index » Rifles » Leaving PCPs charged in storage    View previous topic :: View next topic  Leaving PCPs charged in storage   Posted: Thu Apr 01, 2010 2:45 pm dobiman Veteran Member Joined: 30 Mar 2010 Posts: 167 Location: Gil's Isle, USA I would like to hear your opinions and experiences of leaving your precharged airguns full of air while in storage. Is this OK to do? I have several PCPs and have left them charged up for five to eight years in storage. They still hold air looking at the gauges, but I was wondering what was occuring inside the air chambers. There is compressed air (oxygen), and possibly water which I am thinking would cause internal rusting. I have used the hand pump to fill the air guns so I know there is a small amount of water in there. 9/27/2013 I had a leak on my RWS Excaliber PCP air cylinder. Removed the cylinder end cap to replace the o-ring that was leaking. Got to look inside the cylinder and found it to be made of aluminum, not steel as I thought. There was no coating of any kind inside the tube, so it seems that the tube itself is pretty much rust proof as it is. Last edited by dobiman on Sat Sep 28, 2013 3:23 am; edited 1 time in total   Posted: Fri Apr 02, 2010 11:10 am broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands I always leave at least 100 bar in mine. It's not a problem for as far as I know. After a certain period of time you'll want to get them checked, though, just like with other gas tanks. _________________ BIG GAP   Posted: Sat Apr 03, 2010 1:42 pm Mark5043 Silver Status Member Joined: 12 Apr 2009 Posts: 1379 I don't really think you will have an issue.I always leave mine filled,and no problems.After that prolonged period however,I would personally strip the guns down anyway,just to take a peek.   Posted: Sat Apr 03, 2010 2:47 pm dobiman Veteran Member Joined: 30 Mar 2010 Posts: 167 Location: Gil's Isle, USA OK. I'll take your word for it guys. I've never had to take apart the air chamber on my PCPs, because it seems to be a troublesome task. If it is easy, there will be no problem. I have two Career 707s (.22 and .20) and two RWS Excalibers (.177 and .22) . I'll try to find some instructions on doing this.   Posted: Sat Apr 03, 2010 3:19 pm Mark5043 Silver Status Member Joined: 12 Apr 2009 Posts: 1379 Nice shooters there dobiman.You should be able to find info on em pretty easy.I don't have any experience in dis assembly of the Carreer's or RWS PCP's..just Benjamin Crosman etc.Should be pretty easy though...I'm sure someone will chime in shortly.Oh yeah degas the guns first...I know you already know this,but I'm quite sure someone out there has forgotten this,and received one hell of a rude awakening.....Safety first... Charged PcP   Posted: Sat Apr 03, 2010 10:46 pm DaveShooter Member Joined: 06 May 2009 Posts: 63 Mark5043 wrote: Nice shooters there dobiman.You should be able to find info on em pretty easy.I don't have any experience in dis assembly of the Carreer's or RWS PCP's..just Benjamin Crosman etc.Should be pretty easy though...I'm sure someone will chime in shortly.Oh yeah degas the guns first...I know you already know this,but I'm quite sure someone out there has forgotten this,and received one hell of a rude awakening.....Safety first... I leave my 22 cal Disco at 2000Psi and my 177 and 22 cal Mrod at 2500 Psi all the time. Haven't had any issues yet. If it ain't broke don't fix it..... Alao if it starts to leak than I would worry about it at that time....   Posted: Sun Apr 04, 2010 2:45 am kanyon Silver Status Member Joined: 09 Aug 2008 Posts: 1582 Location: New Zealand Career air tubes unscrew....My Infinity you unscrew the end cap/filler..then unscrew the tube from the valve body.... Pete   Posted: Sun Apr 04, 2010 2:20 pm sniper Silver Status Member Joined: 28 Nov 2008 Posts: 3752 Location: Star, Idaho i got my .22 mrod last summer. the week they came out to the public. it sits with 2000 psi min at all times. nothing lasts forever, so if it leaks i'll just put new seals in it. so far so good. _________________ I believe in gun control, If there's a gun around I want to be controlling it.......   Posted: Sun Apr 04, 2010 4:31 pm broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands Career makes very good barrels! Those are certainly nice shooters. Did you ever have any valve problems? _________________ BIG GAP   Posted: Sun Apr 04, 2010 6:19 pm kanyon Silver Status Member Joined: 09 Aug 2008 Posts: 1582 Location: New Zealand broommaster2000 wrote: Career makes very good barrels! Those are certainly nice shooters. Did you ever have any valve problems? the only valve prob I have had...not really a prob" was when it had no pressure in it "empty" i had a prob getting the valve to seat with no pressure so I could fill it...but once it had enough pressure to seat the valve all was good...all I done was shoot it while the air was leaking though the valve that let the valve spring seat the enough for the air pressure to take over.. So not really a prob... Pete   Posted: Mon Apr 05, 2010 2:53 am broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands I've heard and read some things about the newer 9mm models. That they have weak valves. That .50 they make had the same problem I think, allthough I'm not sure. _________________ BIG GAP   Posted: Tue Apr 06, 2010 4:41 am dobiman Veteran Member Joined: 30 Mar 2010 Posts: 167 Location: Gil's Isle, USA Just heard from my friend who services his own Career 707s. The inside of the air chambers are coated with some kind of grease or wax to prevent rusting. So, we shouldn't worry about the insides unless the seals leak which would also be the time to clean and re-grease the insides. 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