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Hello, new here, first "spud" gun

Built a combustion 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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Hello, new here, first "spud" gun

Unread postAuthor: Mike4192 » Mon Jan 22, 2007 10:33 pm

Hello everyone, Im 15, new here, just came off of a PSP hacking forum so if any of you have a psp, Im the guy to ask, trust me, I know a lot, you can get SNES games, PS1 games, Sega games, Gameboy games on your psp and more....

anyway, here is my first "spud" gun, The idea simply came from this clip, (http://www.youtube.com/watch?v=D4GBMOrZDMI)about 7 minutes in or so...If anyone knows top gear then you will know who that is

I liked the idea of a handle, and so, a couple of days later, here I am, and here are the pics, the container wrapped in tape is Tag body spray, and there is a grey pipe because its industrial strength PVC from my dad

Image

Image

Image

REVISED CHAMBER

Image
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Last edited by Mike4192 on Sat Feb 03, 2007 11:16 pm, edited 2 times in total.

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Unread postAuthor: Insomniac » Mon Jan 22, 2007 10:43 pm

Nice gun, but you used DWV parts. This should be ok for a combustion, but if you build another cannon, try to use pressure rated fittings.
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I wonder how much deeper the ocean would be without sponges.
Right now I'm having amnesia and deja vu at the same time. I think I've forgotten this before.

Add me on msn!!! insomniac-55@hotmail.com
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Unread postAuthor: fallen25 » Sat Feb 03, 2007 10:24 pm

Nice gun but do you happen to know how far it will shoot, as i just made one and its basically a fizzle!
I would like to know so i can make a better one :twisted: :twisted: :twisted:
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Unread postAuthor: Mr.Russ » Sat Feb 03, 2007 10:43 pm

i like it. I might integrate this gun into a mini form :lol:
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Unread postAuthor: Mike4192 » Sat Feb 03, 2007 11:10 pm

fallen25 wrote:Nice gun but do you happen to know how far it will shoot, as i just made one and its basically a fizzle!
I would like to know so i can make a better one :twisted: :twisted: :twisted:


Well, first, ill update my post with my revised gun, because i made the combustion chamber bigger for a better ratio

Now, as for how far it shoots, I would say a good 100-150 yards, just a estimate though

ballad of NJ wrote:what psp hacks do you use? and nice gun also im new here and was wandering how to make your avatar[/url]


Well, ill start off, you might have no idea what im talking about so ill try to dumb it down

My current firmware is 3.03 OE-C, where i can play psp iso's off the mem card, I can also play any ps1 game on my psp using a popstation converter, I have a snes emulator, GBA emulator, and I can watch full resolution videos on my psp because the psp actually cant play full resolution videos without some mods, sony did that for some reason, some other simple stuff, I can change the gameboot of my psp (the little clip that plays when you start a UMD or whatnot)
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Unread postAuthor: SpudBlaster15 » Sun Feb 04, 2007 12:04 am

Nice gun! Every time I see anothe basic combustion, I get the urge to build one myself. Simple is usually the most fun.
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Unread postAuthor: Recruit » Sun Feb 04, 2007 1:46 am

You have a nice gunhow ever I urge that you dont use is because of the DWV. There are several people on this forum that had they guns made from DWV blow on them and lucky for them they lived. DWV over time weakens (more then nsf-pw would) and the sockets fitting are smaller so they tender to blow easer then the others.

But on the gun looks good and pretty clean. Have any Damage pictures.
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Unread postAuthor: MrCrowley » Sun Feb 04, 2007 2:40 am

Nice first gun. I personally think DWV is OK for combustion only. No propane or mapp etc though. You could make your spark gap slightly bigger for more reliable shots but it should be fine.



And 'Ballad of NJ' Can you PLEASE stop bragging about and posting your gun through-out everyone ELSES thread. You made your own, no one brags in your threads so why should you. Just leave your cannon in your own thread unless its relevant to the current topic. No one likes a show off.
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Unread postAuthor: SpudBlaster15 » Sun Feb 04, 2007 3:15 am

Recruit wrote:You have a nice gunhow ever I urge that you dont use is because of the DWV. There are several people on this forum that had they guns made from DWV blow on them and lucky for them they lived. DWV over time weakens (more then nsf-pw would) and the sockets fitting are smaller so they tender to blow easer then the others.


A combustion gun made of DWV parts will not explode, unless the user is using oxygen enriched atmospheres or fuels containing unstable, high energy triple bonds such as acetylene. I have not seen a single DWV gun blow apart when used with safe fuels.
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Unread postAuthor: Insomniac » Sun Feb 04, 2007 3:22 am

I agree, but when he makes another gun it would be a good idea to use pressure rated pipe and fittings. 'just in case'
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I wonder how much deeper the ocean would be without sponges.
Right now I'm having amnesia and deja vu at the same time. I think I've forgotten this before.

Add me on msn!!! insomniac-55@hotmail.com
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Unread postAuthor: Recruit » Sun Feb 04, 2007 5:07 am

http://spudshot.com/Forum/viewtopic.php ... d54824b218
read that thread/\ ANd remember a few guys says on here they had their DWV cannons blow. Also remember that guy in the video that was using DWV cannon (the pipe was orange) to destroy a car and by dumb luck he didnt die.
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Unread postAuthor: tylerthetatertosser » Sun Feb 04, 2007 5:46 am

like everbody says the guys gun will explode. or blow apart. i think this is pissible because i have made a gun where it did not bottom out all the way( i was using abs and sockets are deep). it did blow apart on my friend while he was using it . i was also using ether. i dont think it will blow apart as long as you properly glue the joints. and not use extemly combustable stuff. :lol:
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Unread postAuthor: MrCrowley » Sun Feb 04, 2007 6:09 am

Recruit wrote:http://spudshot.com/Forum/viewtopic.php?t=73&sid=895effdfca7514fe54a2a7d54824b218
read that thread/\ ANd remember a few guys says on here they had their DWV cannons blow. Also remember that guy in the video that was using DWV cannon (the pipe was orange) to destroy a car and by dumb luck he didnt die.


It was never confirmed whether it was either:
Terracotta pots
or
English soil pipe which is orange. Its not the same as DWV but similiar. DWV can handle a basic combustion.(Don't get confused with downpipe/thin wall)
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Unread postAuthor: Mike4192 » Sun Feb 04, 2007 11:25 am

dont worry people, ive used the gun a lot and no problems, and almost the entire combustion chamber is double layered of pvc because of the fittings and stuff, especially in my revised chamber, the only part that isnt double layered is the where the handle meets the chamber, the T piece, and on that part i put several layers of white electrical tape to suppress a explosion if one ever happens, which i doubt.

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Unread postAuthor: SpudBlaster15 » Sun Feb 04, 2007 12:35 pm

Recruit wrote:http://spudshot.com/Forum/viewtopic.php?t=73&sid=895effdfca7514fe54a2a7d54824b218
read that thread/\ ANd remember a few guys says on here they had their DWV cannons blow. Also remember that guy in the video that was using DWV cannon (the pipe was orange) to destroy a car and by dumb luck he didnt die.


1. The gun in that thread was four years old, and had probably been sitting out in the sun for at least half that time.

2. They were using rocks for ammo, some of which probably caught on the inside of the pipe, causing a blockage to form.

3. The guy in the video was using what appeared to be a terracotta pot for a chamber, which of course could handle almost no pressure.

Properly constructed DWV combustions dont blow up.
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