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help attaching a shrader vlave

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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help attaching a shrader vlave

Unread postAuthor: Lard Lad » Fri Dec 07, 2007 7:58 am

I am a noob at this whole pneumatic canon thing so first off i have sucusfuly built a combusion canon and a bbmg but have yet to try to build a pneumatic canon i understand the principal to the solinoid style canon and gow it works but im not sure how to attach a shrader valve. yes i know not to use cell core pvc. also has anyboy used the pnumatic kit from BC arms. its a un assembled small pneumatic so i figgure that that would be a god place to start. any helpfull coments on pneumatic canons would be appreciatted. i will post some pix of my combustion later
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Unread postAuthor: The Kid » Fri Dec 07, 2007 8:04 am

is it a pop in rubber one or a threaded one?
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Re: help attaching a shrader vlave

Unread postAuthor: MrCrowley » Fri Dec 07, 2007 4:37 pm

Lard Lad wrote:yes i know not to use cell core pvc.


And DWV for that matter, make sure you only use pressure rated pipe.

The kit from BC ARMS should be a good start for a beginner, you probably can change it up a bit to your own needs as well.
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Unread postAuthor: WOW!! » Fri Dec 07, 2007 5:32 pm

If it is the threaded kind, all you need to do is drill a hole, 1/2'' for a 1/4'' thread, and I forget what it is for 1/8'', but then you just thread it in carefully and there you go, and remember to put some teflon tape on it afterwards.
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Unread postAuthor: bob-a-lu » Fri Dec 07, 2007 7:46 pm

get an end cap drill a hole in it slightly smaller than the valve and hammer it in. or buy a kit.
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Unread postAuthor: WOW!! » Fri Dec 07, 2007 8:31 pm

bob-a-lu wrote:get an end cap drill a hole in it slightly smaller than the valve and hammer it in. or buy a kit.



Don't hammer it in, thread it in.
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Unread postAuthor: Lard Lad » Fri Dec 07, 2007 9:38 pm

ok i know to use pressure rated pipe so where would i go about getting a pipe tap and 1/4 in threaded shrader vlave
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Unread postAuthor: bluerussetboy » Fri Dec 07, 2007 9:58 pm

a tap can be found at most hardware stores. a threaded schrader valve can be found at either an automotive store(NAPA,Checkers,Autozone,Carquest,BigA) or a tire shop.
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Unread postAuthor: TurboSuper » Sat Dec 08, 2007 12:14 am

Why the hell would you need a tap?

PVC is soft plastic, a schrader valve is hard metal, it will thread itself, just drill the right size hole.
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Unread postAuthor: WOW!! » Sat Dec 08, 2007 11:06 am

Drill a 1/2'' hole and use the schrader valve as your tap. When you do it make sure and take you time so you are not to mess it up.
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Unread postAuthor: Lard Lad » Mon Dec 10, 2007 7:19 pm

is the 1/2in hole for 1/8 in threaded or 1/4 in threaded also do i need to use teflon tape. do i jb weld arround the top when im done, to stop leaks. what is the correct sized drill bit for 1/8 in threaded stuff
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Unread postAuthor: MrCrowley » Mon Dec 10, 2007 8:15 pm

Too many questions.

When you get the schrader valve, go up to your garage, find a drill bit and match it up to find one slightly smaller then the schrader threads, then that's your drill bit.

If your drilling into PVC, ABS etc you wont need JB Weld, only teflon tape.
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Unread postAuthor: Lard Lad » Tue Dec 11, 2007 7:46 am

ok dokie. Would a pair of calipers be a good investment for this and future projects.
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Unread postAuthor: Infernal Maveric » Tue Dec 11, 2007 8:40 am

A pair of calipers is a great investment for any spudder. Digital ones are even better if you can get a pair.
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Unread postAuthor: Hubb » Tue Dec 11, 2007 9:44 am

Why not use a bushing and coupling? This will eliminate the need to drill into anything.

I have a piece at my house that is a schrader / pop off / gauge combo. I forget what it's called but it threads into 3/8" threads and is perfect for a larger pneumatic.
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