Valve Leak
Hello guys!
I have a .22 vulcan (second one first had problems) and since day one it has leaked air, 40-60 bars over nite from the transfer port. I have disassembled the gun five times trying to fix with no luck. I’ve replaced o- rings on outer reg, added more spring tension on valve spring, inspected delrin valve and seat for burs marks etc, place in lathe to see if it’s was concentric and had perpendicular cut to the valve stem, found nothing out of tolerance, I am puzzled! Dipped in a bath of water with 100 bar or two hundred I get bubbles from the transfer port, not a gushing amount but enough to show there is a leak. Because of it I don’t like to just waste air I don have more than 120 rounds in it, I just shoot my Edgun instead, but I look at wondering what to do, it’s from Peter, Evgeny responded this is unusual to his knowledge. One thought is that I have the wrong valve spring in mine, my only reason for this though is I would only get about 35-40 shots per fill 230 bar down to 120 plus/minus? Help Appreciated, thanks
All Replies
Viewing 14 replies - 1 through 14 (of 14 total)
:hoot:
Dear Tractorsign,
I believe you are doing the right thing. Further, I believe Peter was wrong in telling you to put a screw in the valve guide! I don’t see how that could possibly have helped the situation.
Kind regards,
Uncle Hoot:
Well I lapped the valve and seat and noticed the seat for the bore was not perfectly perpendicular to the valve guide! Peter said screw it, so I’m sending it back, and getting .25 since I sold my .25 cricket. I will let you know how it all goes in a few weeks once I receive.
:hoot:
Dear Tractorsign,
Did you find/fix your “leak”? If so, how?
Hoot:
:hoot:
Damn your eyes, dman…you promised to keep that on the down low!!!
Hoot:
Maybe hoot can give him the lap dance …. :hoot: Hoot:
He gave me one and I can honestly say it was the best one I ever had. Lucky me he tossed it in compliments for buying his EDgun. :fishinghole:
Maybe hoot can give him the lap dance …. :hoot: Hoot:
I bet if you get that lap dance it will leak….
Lap dance it is, Ernest just emailed me that he does this whenever the leak is from Transfer port of the AT.
I’ve heard of doing that…. very similar to lapping valves .
Like donny says I’d try and get it fix ed through warranty….
AGT gives a 1 year warranty…. maybe Evengy can send you a new stem and valve assembly that way you can just swap them out.
But if for some reason you aren’t getting the help needed. And you feel you have to take it on yourself…. go for the lap dance!!!!!
Good point! Because it was leaking I always reached for my Edgun and kept putting off dealing with it, particularly because I shoot WFTF field target events. I got it three months ago, but I will try calling peter again. I was hoping it’s happened to someone else and found a fix.
Warranty doesn’t cover this since it happened from the start? I would talk to Peter first before doing anything that may void it.
You think some lapping compound on the face of the delrin valve with the stem in variable speed hand drill a good idea to lap them to mate?
Yeh that don’t seem normal….
If I recall most guys are getting around 70 shots out of there vulcan .
If you have already corrected the valve stem. Then I would look at its mating surface on the valve.
Viewing 14 replies - 1 through 14 (of 14 total)
- You must be logged in to reply to this topic.
:rofl: I think I just streaked my undies!