Air Arms s500 filling

[davidbothamtb]

Hi Guys
I fitted a HUMA reg to my s500 FAC xtra and when filling it from 0 bar it leaks through the transfer port. I have cleaned the valve and housing. I am filling with a dive bottle and the gun is cocked
Anybody got an idea what is going on?

[davidbothamtb]

Don' worry, I was an idiot. Didn't keep the bottle open for long enough...

[Tweeter]

Glad you got it sorted, we all have them moments     I am interested to see how much the regulator improves your s500 and if you gain a few shots so keep us posted!

[LDP]

Same thing happened to my S510 David after installing a reg. I thought man what did I do It was all good

Glad you got it sorted, we all have them moments     I am interested to see how much the regulator improves your s500 and if you gain a few shots so keep us posted!

Justin here is a link to a thread that I have my results posted in from regulating my S510 and theres a couple other GTA members who posted their results and how we modded them to get where we did.
http://www.gatewaytoairguns.org/GTA/index.php?topic=94723.0

[Avra]

Don' worry, I was an idiot. Didn't keep the bottle open for long enough...

It's late to give you some help but this probably will make you feel a tad better:
You have no idea David of how many people (including me) have been in that same situation before!
Just imagine all these funny (''how on earth'' type) faces and you can laugh...
 

[davidbothamtb]

Okay so now that the reg is installed the gun should be shooting pellet on pellet? No. I now have accuracy issues. I checked the barrel alignment/tensioning grubscrews and found that the one closer to the muzzle is not pressing into the dimple, but just on the barrel. I then try to wiggle the barrel free. It moves about a millimeter, and then stops. all screws are removed.it is now stick. can't turn, can come forward??? An I missing something?? Are the two grubscrews at the top of the breech the only screws that hold the barrel in place?
P.s I hope I am having another DUH moment, otherwise something may be seriously wrong.

[Tweeter]

I had an issue with my s400 recently where the barrel set screws came loose and my barrel slid forward and the brassthimble separated causing it to leak air when it was fired.  It also raised a burr on my barrel when the barrel was nudged forward and the set screw was trying to hold it so I had to yank hard to get the barrel out.  The rear screw holds the brass thimble and the front screw the barrel.  I think a good tug will free your barrel and then sand any burrs off before you put it back together so the next time will be easier.

[Tweeter]

Can you tighten up the rear screw to hold the brass thimble and then push your barrel back in and line it up?  That would be simpler than taking it out.

[davidbothamtb]

Well, it won't help to just shove the barrel back in, because the dimple is not at the top. It can be anywhere. it also means the Transfer port wont line up.

[LDP]

I believe AA barrels dont have the port in the barrel but the port is in the thimble.

[Motorhead]

I believe AA barrels dont have the port in the barrel but the port is in the thimble.

Correct ... TP position is controlled by the brass thimble.  Barrel can be anywhere within 360* of rotation.
It just needs to be full rearward seated within thimble.

[LDP]

I believe AA barrels dont have the port in the barrel but the port is in the thimble.

Correct ... TP position is controlled by the brass thimble.  Barrel can be anywhere within 360* of rotation.
It just needs to be full rearward seated within thimble.

At some point I read that AA index the barrels also when they are assembled so you may not have a dimple in the barrel for the set screw. I believe the design is made this way so it can be indexed but I guess they may add the dimple once they have them indexed but that I do not know.