Combustion Cannons

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SpudFiles Potato Gun Commercial

Last post by quinn whitsitt
Replies: 15
by PCGUY » Tue Oct 29, 2013 10:54 pm
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First post

I've been wanting to get in some spud shooting action this fall before the weather got cold. I know it's been a while since I filmed anything for...

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thank you for creating this website is there anything i can do to help
15 Replies

956002 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
Sparker Reference Guide

Last post by quinn whitsitt
Replies: 45
by rcman50166 » Tue Feb 05, 2008 4:19 pm
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First post

OK. Everyone always seems to know more than me in almost every topic on this site. But this is my domain! High voltage electricity is what i know...

Last post

great job how can i help the fourms
45 Replies

314943 Views

Last post by quinn whitsitt
Fri Mar 01, 2024 10:52 am

Topics

fan

Last post by starman
Replies: 2
by sebastian » Tue Oct 14, 2008 9:00 pm

First post

I am making my first combustion cannon and I was looking for some pointers.

for example what is the purpose of a fan in the combustion chamber how...

Last post

The purpose of the fan is to vigorously mix the fuel air mixture before and during the shot and to assist ventilating spent gases after the shot. It...

2 Replies

1192 Views

Last post by starman
Tue Oct 14, 2008 9:31 pm
Overfuelling issues even bother terrorists...

Last post by POLAND_SPUD
Replies: 28
by Hotwired » Thu Oct 09, 2008 8:01 pm
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First post

Back in 2007 two car bombs failed to explode outside a London nightclub. The bombs consisted of petrol and gas cannisters inside the vehicle.

On one...

Last post

you know what I meant and I know what you meant...

besides would you call them 'inteligent' and 'succesful' terrorists if they had managed to cause...
28 Replies

6191 Views

Last post by POLAND_SPUD
Tue Oct 14, 2008 2:41 am
Spark rail issue

Last post by mrbadexample
Replies: 7
by alkapwn1 » Sun Oct 12, 2008 10:08 pm

First post

Ok, I've built a spark rail for my first combustion cannon but it seems when i try to test the whole rail together it doesn't work.
I have 3 spark...

Last post

hopefully, you'll use propane as a fuel, hair spray and deoderants have water in them and would foul those tiny gaps over time. maybe later you could...

7 Replies

3285 Views

Last post by mrbadexample
Mon Oct 13, 2008 5:18 pm
My very first combustion

Last post by mark.f
Replies: 5
by auxiliary » Sun Oct 12, 2008 7:11 pm

First post

I built this cannon a couple of months ago because I had some spare cash and nothing to do with it, so I decided to build my first combustion....

Last post

Looks very good! Although I have one suggestion:

3 SCH-40 (ABS, PVC, whathaveyou) make a great holder for propane tanks. If you were to integrate...

5 Replies

3634 Views

Last post by mark.f
Mon Oct 13, 2008 8:58 am
Car ignition coil

Last post by mark.f
Replies: 18
by Schuyler » Fri Oct 10, 2008 8:04 pm
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First post

Does anyone have any experience with using this to ignite your cannon? Are there any risks in using it in this fashion?

Last post

TurboSuper has the idea.

You could also conceivably run it off a small gag lighter, which runs off a AAA battery, but don't take my word for it.
18 Replies

4876 Views

Last post by mark.f
Sun Oct 12, 2008 8:41 am
propane question

Last post by VH_man
Replies: 3
by nibbler125 » Sun Oct 12, 2008 12:23 am

First post

for my next gun I am thinking of using a propane injection system and I was wondering how much psi a small camping propane tank has in it ?

Last post

well, you can go through a long series of calculations to figure out the vapor pressure of propane at whatever temperature you have, or look at a...

3 Replies

1471 Views

Last post by VH_man
Sun Oct 12, 2008 8:14 am
First big cheap combustion gun build

Last post by mark.f
Replies: 12
by 88pathoffroad » Sun Sep 14, 2008 10:40 pm

First post

I previously built a gun with a 3 x10 chamber and a 38 1.5 barrel; it shoots spuds pretty well, so I decided to go one step bigger. Couldn't resist....

Last post

Actually, I believe SpudMonster's cannon (identical name) shot around 1,000-1,100 feet with a 2 potato slug (it was even made of ABS as well).

It's...

12 Replies

5276 Views

Last post by mark.f
Sat Oct 11, 2008 8:22 am
Fan complications, propane effecting fan motor?

Last post by SoulWraith753
Replies: 2
by SoulWraith753 » Fri Oct 10, 2008 5:04 pm

First post

I just made yet another combustion launcher and installed a non-spark 12 volt computer fan into my combustion launcher (at the very back of the...

Last post

The fans working again, no wires were exposed and everything was connected…. Kinda weird. There’s no way I could have switched the wires on accident,...

2 Replies

1252 Views

Last post by SoulWraith753
Fri Oct 10, 2008 5:57 pm
smoke launcher

Last post by i-will
Replies: 7
by devilman » Fri Oct 10, 2008 2:02 am

First post

I was just just thinking what should i do with my spare time, as i dont have the money to build my pneumatic launcher yet. So i was thinking about...

Last post

:shock: wow. i need to read the rules about 5 more times. :shock:

7 Replies

3151 Views

Last post by i-will
Fri Oct 10, 2008 1:53 pm
begginer

Last post by i-will
Replies: 10
by icys revenge » Thu Oct 09, 2008 1:21 am

First post

hey im nw to the spud cannon thingy..

i was wondering what a good starter cannon to make would be?

thanks

Last post

....:D sorry :D....

i used it to * MAKE COOKIES * on my neighbor's roof from my bedroom window.

that's much better :D

10 Replies

2607 Views

Last post by i-will
Thu Oct 09, 2008 11:58 pm
my first spud gun

Last post by i-will
Replies: 14
by mrbadexample » Thu Oct 09, 2008 3:52 pm

First post

(click to enlarge)

my first spud gun, multiple interchangable barrels.

Last post

i like that u use more than one barrel. have u looked into a quick connect system for them. that would make it much more awesome.

14 Replies

3765 Views

Last post by i-will
Thu Oct 09, 2008 10:56 pm
'Salting Out' Isopropyl Alcohol?

Last post by mark.f
Replies: 7
by mark.f » Wed Oct 08, 2008 9:05 pm

First post

It's interesting, I was just reading around on isopropanol and came across a little ditto on Wikipedia.

Basically, it says you can add a salt to an...

Last post

nivekatoz, I have made 6 propane/MAPP/butane/Starting Fluid combustion cannons. :wink:

EDIT - 7 if you count the one I made out of a JIF peanut...

7 Replies

7505 Views

Last post by mark.f
Thu Oct 09, 2008 6:32 pm
My new propane gun with vid

Last post by mrbadexample
Replies: 9
by uncomplientspud » Sat May 31, 2008 8:28 pm

First post

Propane meter, 14.5 inch chamber with 4 inch diameter. Barrel is 6 feet of 1.5 inch. All ABS

Let me know what you think

Update. I made a holder...

Last post

i like the last case box 8) , i've been thinking of a military surplus flak jacket (bullet proof IIIA jackets are $300), both still leave your arms...

9 Replies

5039 Views

Last post by mrbadexample
Wed Oct 08, 2008 3:43 pm
(NEW VIDEO!!!!) my potato cannon

Last post by stevenarroyo
Replies: 37
by stevenarroyo » Thu Aug 07, 2008 4:03 pm
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this is some pictures of my potato cannon that i have made sometime ago.

tell me what u think of it!!!

after painting

am going to...

Last post

thanks pilgrimman

i saw the deo holder somewhere in this site and and tried to make 1 and it came out really good.
37 Replies

9430 Views

Last post by stevenarroyo
Wed Oct 08, 2008 12:04 pm
first Ghetto cannon.... RIP.

Last post by stevenarroyo
Replies: 19
by stevenarroyo » Tue Oct 07, 2008 2:47 pm
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First post

like the title says this is my ghetto cannon.

the combustion chamber is 6 x 7 long.
the barrel is 2 paper towel rolls glued together.

and here...

Last post

sorry yes i meant that it's my first ghetto cannon
19 Replies

5165 Views

Last post by stevenarroyo
Wed Oct 08, 2008 11:16 am
Screws for Additonal Support

Last post by jimmy101
Replies: 8
by alkapwn1 » Tue Oct 07, 2008 7:07 pm

First post

Now I've seen some combustion cannons that, Including the basic PVC primer/cement, use small 2 cm (about an inch) wood screws every couple of cm...

Last post

The screws really won't do anything. Like others have said;

1. The glued joint is more than strong enough for a combustion and screws will not...

8 Replies

2467 Views

Last post by jimmy101
Wed Oct 08, 2008 10:47 am
my 1st cannon

Last post by Pyro Ninja
Replies: 8
by elad311 » Sat Oct 04, 2008 8:25 am

First post

This is my first cannon, I haven't launched anything yet, because I wanna ask here if it will explode!
It made of:
*All the parts are screwing...

Last post

It is made of Poly pipe, so it should be fine not to fail.

8 Replies

2962 Views

Last post by Pyro Ninja
Wed Oct 08, 2008 7:22 am
combustion marble gun

Last post by dopeassmonkey
Replies: 28
by dopeassmonkey » Wed Dec 19, 2007 9:54 pm
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First post

hey this is my first post on this here website and i thort id just put up a couple of pics and see what yous think about it
its got dual ignition and...

Last post

says sig 552 on the gun but its just a random plastic toy one so who knows
28 Replies

9415 Views

Last post by dopeassmonkey
Wed Oct 08, 2008 3:03 am
Who's the strongest?

Last post by jook13
Replies: 10
by elad311 » Tue Oct 07, 2008 8:56 am

First post

I was just wondering...
What kind of spud gun is stronger:

The first one in this video:

OR the one in this video:

Because, the most of the...

Last post

as others have said, bigger chamber and barrel makes bigger power with combustions. If you truly want more power, research pneumatic cannons.

10 Replies

3152 Views

Last post by jook13
Tue Oct 07, 2008 6:22 pm
My 3rd spud gun plans

Last post by CS
Replies: 1
by elad311 » Tue Oct 07, 2008 12:04 pm

First post

Those are my plans for my 3rd spud gun:

Do you think it will be powerful? :D

O, and, spud gun can be made out of soft PVC pipes without...

Last post

No it is not going to be powerful, and you should make it out of hard PVC. *sarcasm*

No but really...

Do you realize just how vaguely you used the...

1 Replies

2486 Views

Last post by CS
Tue Oct 07, 2008 12:53 pm
Noob help

Last post by alkapwn1
Replies: 6
by alkapwn1 » Sun Oct 05, 2008 9:39 pm

First post

Well I am new to spudguns and such and have decided to build my first.

I have perused the cannons sections and am collecting ideas

I plan to build...

Last post

How do you get a pic on? Its saved on my comp do I have to put it on the net?

6 Replies

2256 Views

Last post by alkapwn1
Tue Oct 07, 2008 10:57 am
Building a big cannon. I need advice so I can do it right

Last post by FLONE
Replies: 7
by AgiTator » Wed Sep 17, 2008 9:36 pm

First post

At the moment, I'm a happy spudder. I have a cannon with a 2 x 6' barrel and a 4 x 16 chamber. It's a spray and pray with a single gap ignition. I've...

Last post

Do you guys know if the two 90 degree fittings used to turn the corner for the barrel will restrict the expanding gases in any significant way?...

7 Replies

3319 Views

Last post by FLONE
Tue Oct 07, 2008 12:30 am
Travel of energy through gun

Last post by alkapwn1
Replies: 6
by alkapwn1 » Sun Oct 05, 2008 10:43 pm

First post

I was wondering if, for asthetic reasons, instead of doing a simple 2 90 degree coupler over under, I routed the expanding gasses through a longer...

Last post

Thanks, and I'm just going to go with the simple 2 90 degree turns. I have an idea for my breech loading mechanism. I'll make a pic of it and post...

6 Replies

2618 Views

Last post by alkapwn1
Mon Oct 06, 2008 6:45 pm
Propane Expansion

Last post by ramses
Replies: 5
by kenbo0422 » Mon Oct 06, 2008 1:11 pm

First post

OK, this isn't the liquid to gas expansion question, its the 4% mixture question: How much does the burning mixture expand?? I've looked everywhere...

Last post

HGDT is a simulator for combustion and hybrid guns, made by a member of the forum. We worship it like an idol and it gives approximations of the...

5 Replies

3422 Views

Last post by ramses
Mon Oct 06, 2008 3:57 pm
Methane "factory" design

Last post by kenbo0422
Replies: 26
by Demon » Sun Sep 28, 2008 8:26 am
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First post

Seem if i cant use combustion spudguns(my parents wont let me)
i thinked of a way to make your own propellant:

1.You put any sort of biodegradable...

Last post

I used to work in wastewater treatment many years ago. Its an anaerobic digester. Keep it wet, warm (about 98F), and mix daily (shake), and it'll...
26 Replies

7204 Views

Last post by kenbo0422
Mon Oct 06, 2008 3:01 pm

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