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School Cannon

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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Unread postAuthor: STHORNE » Mon May 05, 2008 7:14 pm

bigbob12345 wrote:Search part #6646K23 on mcmaster
The type you want is type F at the bottom


thanks...but $23 seems a bit much....im sure i we can find something on ebay...
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Unread postAuthor: bigbob12345 » Mon May 05, 2008 7:16 pm

Ebay doesnt have much better to my experience(Ive searched for them before). The cheapest Ive seen on ebay in the right size and type was about $20 which is threee dollars less than a brand new one.
You decide
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Unread postAuthor: STHORNE » Mon May 05, 2008 7:19 pm

aww f**k it...ill just go buy a 3/4" sprinkler valve at home depot for $13.
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Unread postAuthor: bigbob12345 » Mon May 05, 2008 7:21 pm

Buy a 1in valve
More flow=more power and effecientness(not sure if thats a word)
Im pretty sure they are the same price too.
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Unread postAuthor: Ragnarok » Mon May 05, 2008 7:21 pm

STHORNE wrote:ill just go buy a 3/4" sprinkler valve at home depot for $13.

Nah, up that to at least 1" if you can. That way you can get more shots out of the same size of CO2 tank, as it will allow you to use less pressure in the chamber for the same results.

EDIT: Curses, beaten to the punch. Where are those cheat codes for life that paaiyan sent me?
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Unread postAuthor: STHORNE » Mon May 05, 2008 7:23 pm

Ragnarok wrote:
STHORNE wrote:ill just go buy a 3/4" sprinkler valve at home depot for $13.

Nah, up that to at least 1" if you can. That way you can get more shots out of the same size of CO2 tank, as it will allow you to use less pressure in the chamber for the same results.


yea, good point...1" is only $17 bucks i think so i'll do that...

I have like 3 months to make the gun lol....it should take me like 4 days....
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Unread postAuthor: bigbob12345 » Mon May 05, 2008 7:25 pm

Rag: Own3d :lol:

STHORNE: Be sure to post it when complete mmmk
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Unread postAuthor: daberno123 » Mon May 05, 2008 7:27 pm

I agree that the 2" sprinkler is a bit overkill, a 1" is all you need. Make sure you don't have too big a chamber or you'll be eating through CO2.

How did your principal find out about your spudding? Didn't catch you did he?
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Last edited by daberno123 on Mon May 05, 2008 7:27 pm, edited 1 time in total.
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Unread postAuthor: STHORNE » Mon May 05, 2008 7:27 pm

bigbob12345 wrote:Be sure to post it when complete mmmk


who do you take me for? I post everything lol...even a little shitty 1" mini combustion... (then again, you did too, and it was less than 1" you bastard :x :) )

but yeah...will definitely post 'er...
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Unread postAuthor: potatoflinger » Mon May 05, 2008 7:29 pm

STHORNE wrote:
Ragnarok wrote:
STHORNE wrote:ill just go buy a 3/4" sprinkler valve at home depot for $13.

Nah, up that to at least 1" if you can. That way you can get more shots out of the same size of CO2 tank, as it will allow you to use less pressure in the chamber for the same results.


yea, good point...1" is only $17 bucks i think so i'll do that...

I have like 3 months to make the gun lol....it should take me like 4 days....

Check at your local Fastenal store, they have 3/4" QEV's for less than $30 after shipping. A 3/4" Qev would easily outperform a 1" sprinkler valve, and the QEV is metal so that is a huge bonus in my opinion.
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Unread postAuthor: bigbob12345 » Mon May 05, 2008 7:30 pm

Sthorne:D
Yes I own3d you at that, a while back that was but fun nevertheless
And you know that mini coax thing, Ive started making one.
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Unread postAuthor: Ragnarok » Mon May 05, 2008 7:31 pm

bigbob12345 wrote:Rag: Own3d :lol:

Enter cheat code:
> BigDaddy
God Mode Active

Enter command:
> Smite bigbob12345

Confirm Y/N?
> Y

Executing...
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Unread postAuthor: bigbob12345 » Mon May 05, 2008 7:34 pm

:lol:
Im waiting to get executed
Still havent gotten executed, Im starting to believe you are bluffing :roll:
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Unread postAuthor: STHORNE » Mon May 05, 2008 7:35 pm

daberno123 wrote:How did your principal find out about your spudding? Didn't catch you did he?


I have no idea to tell you the truth. One day I was just sitting in study hall (drawing devious plans of course) when I was called down to the office. Right away he says, "Now Mr.Thorne (like he was talking to another adult, lol) I hear you are "into" (with the fingers) Potato Guns.....am I right? At first i thought I was in trouble so I said, "not really...".

Principal -"Oh, never mind then, we needed somebody to make a T-Shirt launcher for the school and thought maybe you could do it, you can go back to your study now". So I said, "Oh, yeah....sorry, i refer to them as Spudguns, but now that I know what your talking about go on" (yeah, even I was surprized when i came up with that on the spot).

So we got into a big conversation about why he wanted it ect. and the deal was made....and i said I would happily do it. And thats it. Pretty kick ass principal if i do say so myself :D
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Unread postAuthor: daberno123 » Mon May 05, 2008 7:38 pm

Hmmm... Lucky you. I'd gladly build a cannon for my school.

BTW Ragnarok- Love the new sig, where'd you find it?
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