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Damn faulty valve

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Damn faulty valve

Unread postAuthor: kydavies » Sun May 30, 2010 5:01 pm

the schrader valve on my nerf sniper packed it in. when ever i remove the bike pump after filling my cannon the rubber schrader valve lets all the air out. i have 2 options: 1 cut my chamber and put a new cap and schrader valve on, 2 fix it (i would prefer to fix it with out cutting apart my cannon)
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Unread postAuthor: deathbyDWV » Sun May 30, 2010 5:10 pm

First try this... Look down the top. You will see a pin and a flat bar. Sometimes the flat bar gets loose so it just needs screwed in...

I had this problem before and that was all it needed to be fixed...
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Unread postAuthor: kydavies » Sun May 30, 2010 5:18 pm

k i think thats the problem il go give that a shot
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mikemurph wrote:yea, the ammo has been changed to a more aero dynamic projectile. it consists of the back half of a dart, and a hot glue ball
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Unread postAuthor: Technician1002 » Sun May 30, 2010 5:46 pm

If the valve core is bad, they are replacable. Any auto parts store or tire shop has them. They are cheap.
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Unread postAuthor: kydavies » Sun May 30, 2010 6:00 pm

i fixed my valve :lol: im going to go put more holes in card board now (from 40 feet away)
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mikemurph wrote:yea, the ammo has been changed to a more aero dynamic projectile. it consists of the back half of a dart, and a hot glue ball
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Unread postAuthor: Gun Freak » Sun May 30, 2010 7:31 pm

Tech, they are also at walmart, the remover tool and 4 new cores come with it for <$3
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Unread postAuthor: kydavies » Sun May 30, 2010 7:56 pm

k i fixed it for now but after 5 or 10 shots the stupid flat bar comes loose and makes my valve leak. can u glue it in place with lock tight or JB weld?
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Unread postAuthor: Gun Freak » Sun May 30, 2010 7:57 pm

Get a new valve stem and core remover for 3 dollars.
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Unread postAuthor: kydavies » Sun May 30, 2010 8:01 pm

k il get one next time im at walmart if i remember
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mikemurph wrote:yea, the ammo has been changed to a more aero dynamic projectile. it consists of the back half of a dart, and a hot glue ball
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Unread postAuthor: Gun Freak » Sun May 30, 2010 8:01 pm

They are at some walmarts, at my close one there arent any but I saw them at anothe rone so you gotta get lucky.
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Unread postAuthor: Technician1002 » Sun May 30, 2010 8:09 pm

Some valve caps have the wrench built into the top of the valve cap. They are even cheaper. Might even already have one on your car or bike.
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Valve cap with core tool.
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Unread postAuthor: Gun Freak » Sun May 30, 2010 8:10 pm

Interesting, I think they had one of those at Ace in the same drawer as the normal 1/8" schraders. I'll check it out...
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Unread postAuthor: jhalek90 » Mon May 31, 2010 9:50 am

Better idea.... dont use a valve from an old tire.... u can get a 1/4'' threaded metal schrader valve for like... 3 bucks at most hardware stores.

Then, they simply thread into your gun... and if it actually does break... unthread it and replace it.
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Unread postAuthor: Gun Freak » Mon May 31, 2010 6:47 pm

I never used unthreaded schraders, every one I've bought was threaded and I've never had a problem.
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Unread postAuthor: kydavies » Mon May 31, 2010 6:51 pm

ive never looked for threaded schraders before but i see how that has the advantage over the unthreaded rubber ones if it breaks or something. il look in to getting one for my next project (a golfball semi or a marble/paintball semi)
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mikemurph wrote:yea, the ammo has been changed to a more aero dynamic projectile. it consists of the back half of a dart, and a hot glue ball
AHahahahah!!
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