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SGA Golf ball Gun (2" Piston), 400yards!

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: MrCrowley » Tue Jul 03, 2007 7:42 am

@Modder

Expanding foam can take it? I thought it would break and crumble or something :?

That video I made for my Science/Maths/Physics teacher whos moving to England, he wnated to see the gun but didn't have time. Had him 3 years running, first year he took me for Science, next he took me for maths and he's currently taking me for Physics.
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Unread postAuthor: iPaintball » Tue Jul 03, 2007 8:08 am

Awesom cannon! I love the olive drab paint too!
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Summer Projects:
CO2 tank hybrid: Gotta fix the meter :(
Cane gun: Needs a pilot/fill setup
1.5" piston valve gun: Almost done
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Unread postAuthor: noname » Tue Jul 03, 2007 10:26 am

Really nice gun! I'd have to say the olive drab paint is a bit bland though; you need some brown or black in there also.
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Unread postAuthor: rednecktatertosser » Tue Jul 03, 2007 10:31 am

MrCrowley wrote:@Modder

Expanding foam can take it? I thought it would break and crumble or something :?

That video I made for my Science/Maths/Physics teacher whos moving to England, he wnated to see the gun but didn't have time. Had him 3 years running, first year he took me for Science, next he took me for maths and he's currently taking me for Physics.


Youre right expanding foam would just take one hit and be permanently smashed, it has little to no elasticity(sp?)

Also Very clean cannon good paint and excellent design.
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Last edited by rednecktatertosser on Tue Jul 03, 2007 12:15 pm, edited 1 time in total.
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Unread postAuthor: joannaardway » Tue Jul 03, 2007 12:01 pm

MrCrowley wrote:@hi:
Yeah but it would set me back $50NZD($38US) just to get a modded solenoid valve. I can only get 1" valves for $40NZD shipped, then it cost me $10 to mod it.

Personally, for that money, I would have done it. That's about £20 UK, which is very reasonable over here.

The cheapest a blowgun can be acquired is about £3 (~$8 NZD), and that doesn't include the fittings needed. And a sprinkler valve costs the earth.
There's a reason why I use piston valves and QEVs (the legendary "expensive" valve) - compared to a sprinkler, they cost peanuts for what they do.

BTW, very nice cannon - odd shape, but I assume it works.
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Unread postAuthor: MrCrowley » Tue Jul 03, 2007 5:32 pm

noname wrote:Really nice gun! I'd have to say the olive drab paint is a bit bland though; you need some brown or black in there also.


I test fire it next to the navy :roll: It used to be dark green, then I didn't like it so i changed it to black where it looked very realistic and dangerous and my paint started to scale so I was left with some 2 year old light green. :(

@Joanna

For a 1/4" QEV im looking at $40NZD(15UKP) for a 1/2" im looking at $78NZD(29UKP) Its not really worth the slight increase in power or more comfortable design.
You assume it works :P Of course it bloody well works check out the video :D
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Unread postAuthor: shud_b_rite » Tue Jul 03, 2007 11:45 pm

Nice work. That thing looks dam powerful, even when you fired just air in the video. Where did you get that ball valve? I need one just like it.
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Airbeds... so many different uses
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Unread postAuthor: turbohacker » Wed Jul 04, 2007 12:04 am

Great gun!

Ever think of putting a spring loaded thingamajigger on your ball valve, might make it easer to fire :D
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<-- This is not a cat avatar

If it walks like a dog, sratches like a dog, and barks like a dog, than its probobly a...-TURTLE, it's a TURTLE!!! Cant you see?!!!

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Thats a beast!
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Unread postAuthor: MrCrowley » Wed Jul 04, 2007 12:11 am

Yeah been thinknig about it, Doesn't really need it.

shud_b_rite any NZ hardware store stocks them. 15mm ball valve. Just go over to the gas fittings/plumbing/brass fittings section

Damage video about 10min away
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Unread postAuthor: Modderxtrordanare » Wed Jul 04, 2007 12:32 am

That video is pretty ownage, I like the smoke effect it does when you shoot it too.

P.S. I'm digging the camera mounted (taped) on the ßarrel.
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Spudding since '05. Proud waster of plumbing and plumbing accessories.

-Wiki
-How-To: Modding a Sprinkler Valve
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Unread postAuthor: MrCrowley » Wed Jul 04, 2007 2:43 am

Updated damage video compilation.

I also managed to shoot 3 golfballs consistently 250m at 80PSI.
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Unread postAuthor: wannabie » Wed Jul 04, 2007 3:01 am

sweet man that has power. are those cupboards made out of plywood? if so how thick are they?
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Unread postAuthor: bazza » Wed Jul 04, 2007 4:34 am

Am i the only one that thinks its slightly unsafe that he is shooting into the air in a heavy residential area? what the hell man, you could seriously injure someone!

I apologize in advance if there is something i am missing (ie. you are shooting over some properties into a large open field etc.) but damn it man, you'd better watch out!
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Unread postAuthor: MrCrowley » Wed Jul 04, 2007 6:34 am

Yeah I'm shooting onto a golfcourse 50m away that was closed due to the weather. Im not that reckless.

Wannabie - cuboards are 3/4" chipboard.
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Unread postAuthor: joannaardway » Wed Jul 04, 2007 8:37 am

MrCrowley wrote:You assume it works :P Of course it bloody well works check out the video :D

I was talking about the shape. Read as:

odd shape, but I assume that the shape works for holding it

Obviously the cannon works... but I was more interested in the ergonomics - piston valves are nice, but nothing new. The shaping of this is very different to almost all cannons I can think of.

Or is your use of smilies indicating that you knew what I was on about, and you're joking? Damn, I wish I didn't just read over the smilies normally - I might know how to use them better (I almost never use them.)

Now for my next question - why were the damage videos put together in that order?
It's clear that at least with the second set of them, the video put first happened second (based which holes are there)

You don't need to answer that.
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