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pneumatic rifle piston construction

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pneumatic rifle piston construction

Unread postAuthor: bikingpro911 » Thu May 15, 2008 7:08 pm

can someone PLEASE tell me if i can actually make a piston out of copper pipe, sealing face, hotglue, bolt, nut, washers and scradjler valve...sorry about that valve word i just dont know how to spell it.

but uhh...now heres the thing....SHOULD i put a 1" T on the back part of the piston so i have a place to fill the air behind the piston up and the other end leading to a blowgun vavle. and if i do use the valve from a bike tire what do i use to properlly keep it in place...what should i do?
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Re: pneumatic rifle piston construction

Unread postAuthor: MrCrowley » Thu May 15, 2008 7:19 pm

bikingpro911 wrote:can someone PLEASE tell me if i can actually make a piston out of copper pipe, sealing face, hotglue, bolt, nut, washers and scradjler valve...

Yes you can. Anything else I can help you with?


What happened to:
email me at car-crazy-john@hotmail.com to learn how to make a piston


Why the hell would someone email you to learn about pistons, when you don't even have a clue what you are doing?

SHOULD i put a 1" T on the back part of the piston so i have a place to fill the air behind the piston up and the other end leading to a blowgun vavle. and if i do use the valve from a bike tire what do i use to properlly keep it in place...what should i do

If you want to. You really have no clue what you are doing. It all depends on your design, if you're making a small cannon, that's a lot of pilot volume you could do without.

Umm...use a threaded schrader?

You REALLY have absolutely no idea what you are doing. Come back on Monday when you've done some proper research.

...what should i do

I could name a few things, but it would be messy and involves a shotgun.


Sidenote: Posting EVERY other WORD in CAPITAL letters is AGAINST the RULES. I linked you THE rules in my PM to YOU. so PLEASE read THEM and try to REFRAIN from BREAKING them. THANK you.


Edit: <A HREF="http://www.spudfiles.com/spud_wiki/index.php?title=Main_Page">Merry</a> <A HREF="http://www.spudfiles.com/forums/search.html">Christmas</a>
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Last edited by MrCrowley on Thu May 15, 2008 7:22 pm, edited 1 time in total.
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Unread postAuthor: judgment_arms » Thu May 15, 2008 7:20 pm

bikingpro911 wrote:what should i do?

Click HERE

edit:
forgot the quote...
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Call me "Judge", it's easier to type.

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Unread postAuthor: MrCrowley » Thu May 15, 2008 7:23 pm

judgment_arms wrote:Click HERE

Damn why didn't I think of that? Should've written my whole post in capitals and cool blue links, he would've liked that :D
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Unread postAuthor: judgment_arms » Thu May 15, 2008 7:31 pm

MrCrowley wrote:
judgment_arms wrote:Click HERE

Damn why didn't I think of that? Should've written my whole post in capitals and cool blue links, he would've liked that :D


Probably…

I’m about ready to write up a generic list of useful links to use to answer all these danged greenhorns that we keep getting lately...
The flow of greenhorns probably has got something to do with summer comin’ up fast…
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Unread postAuthor: Mitchza89 » Thu May 15, 2008 7:40 pm

Have a bit of a look around the pneu showcase mate. Get a bit more familiar with the different configerations and constuction materials that people use depending on the size bore of the piston gun you're building. That's what I did after first learning about exactly how piston guns work.

First things first... What do ya wanna shoot out of this thing? What's the bore?

Cheers mate,

Mitch.
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Unread postAuthor: bikingpro911 » Thu May 15, 2008 7:43 pm

i am going to place a barrel the diameter of a marbble inside if a 1" pipe then make it perfectly center by drilling holes into the side of the barrel onto the pipe the fill it up with expanding foam


but thanks for the advice
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Unread postAuthor: Mitchza89 » Thu May 15, 2008 8:04 pm

So then you want 1/2'' pressure pipe as the barrel. I don't know if the dimentions are the same as over seas but in Aus, the ID of 1/2'' pressure pipe is very good for 16mm marbles.

Why sleeve the barrel into 1'' pipe and use expanding foam? It's easiler to just get a 1'' Tee with a few reducing bushes, and bingo, you have a barrel sealing Tee Valve :wink:

Draw up a plan on pain exactly what you've got in your head and I'll see what I can do to make it easy, practical and safe.

Cheers,

Mitch.
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Unread postAuthor: bikingpro911 » Thu May 15, 2008 8:08 pm

yes but im doing something with a rifle that looks like this.

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but just drop the vavle and u see what it looks like so ya


thanks though
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Unread postAuthor: Mitchza89 » Thu May 15, 2008 8:34 pm

Yep now I gotcha. I wasn't sure on the style of piston gun you had planned. The only thing you've got to worry about is the pilot size behind the piston and what you use to actuate it. If you're planning to use a sprinker valve, then you might have some luck.
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