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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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

637472 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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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

214268 Views

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

Topics

What kind of fuel should i use ?

Last post by jimmy101
Replies: 19
by dudeman508 » Mon Dec 15, 2008 10:15 am
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I know i haven't been on the forum lately, but i am half way through my copper piston cannon, and i have just finished my first combustion. It is a...

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explosive ingredients.

Ermm, the word is Combustible not explosive :) As in burn, not blow-up.
Ermm, no, the term is explosive. Combustable gases...
19 Replies

6103 Views

Last post by jimmy101
Thu Dec 18, 2008 12:43 pm
My First Simple Combustion Cannon

Last post by captaincrash17
Replies: 8
by captaincrash17 » Tue Dec 16, 2008 11:41 pm

First post

This is my first combustion cannon i made a few years back.

Specifications:
Barrel: 36in 2in diameter sch40
Chamber: 14in 3in diameter sch40...

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good point there cosmic muffin ill see how it works out

8 Replies

4054 Views

Last post by captaincrash17
Wed Dec 17, 2008 9:45 pm
Where to put the 80mm fan?

Last post by Radiation
Replies: 7
by taterflames22 » Mon Dec 15, 2008 12:37 pm

First post

I'm wondering if anyone could help me out. When putting the fan in the chamber, do you put it behide the gas output or in front of the gas output?

Last post

Fan size is more important than fan location (though I scoff at the notion that putting a fan at the end of a chamber is an ideal setup). People tend...

7 Replies

2304 Views

Last post by Radiation
Wed Dec 17, 2008 7:46 pm
UPCL-495CI

Last post by Xxplosive42o
Replies: 49
by SpudBlaster15 » Thu May 03, 2007 8:18 pm
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse...

Last post

Well it should theoretically help because...

The combustion process in a spud gun without correctly placed spark gaps or only one does not happen...
49 Replies

16255 Views

Last post by Xxplosive42o
Tue Dec 16, 2008 6:39 pm
Whats the difference?

Last post by FishBoy
Replies: 4
by taterflames22 » Mon Dec 15, 2008 10:29 pm

First post

I've heard of a gas heater ingiter and a gas grill ingiter. I've diffently seen what a electic gas grill ingiter is. But whats the difference or are...

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I'm with CasinoV, piezoelectric grill ignitors are cheap, and they last a long time, I have had a few since the beginning of Summer and they still...

4 Replies

1895 Views

Last post by FishBoy
Tue Dec 16, 2008 6:54 am
The Gauntlet of Clara Ann

Last post by Xxplosive42o
Replies: 41
by Radiation » Thu Dec 11, 2008 7:46 pm
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Or just The Gauntlet for short. This project has been a long time coming. This is the result of many months of building, rebuilding, obsessive...

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Yea Radiation! Please do! I am just blown away by how complex that puppy is for it's size. I guess the best things in life come in small packages....
41 Replies

16788 Views

Last post by Xxplosive42o
Mon Dec 15, 2008 11:46 pm
Would anyone like to share?

Last post by MrCrowley
Replies: 10
by taterflames22 » Mon Dec 15, 2008 6:14 pm

First post

I want to bulid a really cool and very powerful combustion gun. And I was seeing if anyone had detailed plans to one they would like to share. If...

Last post

No problem, everyone does it at first.

This topic should help, have a look at the some of links provided in the replies as well.

10 Replies

4534 Views

Last post by MrCrowley
Mon Dec 15, 2008 10:25 pm
Potatoe Potatoe combustion.

Last post by john bunsenburner
Replies: 38
by ALIHISGREAT » Sat Dec 13, 2008 12:13 pm
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so i;ve decided to make a combustion cannon... out of a potatoe :lol:

the design is not to scale, but its pretty simple... i don't think it needs...

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For heavens sake why does not one jsut make a spud pipe bomb, i think i should, just to check(i have made real pipe bombs so a spud wont hurt me...
38 Replies

8009 Views

Last post by john bunsenburner
Mon Dec 15, 2008 2:22 pm
Time To Make Silly Discussion.

Last post by jrrdw
Replies: 37
by jrrdw » Sun Dec 14, 2008 8:40 am
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Talk about the Potato Cannon Cannon contest here.

Many thanks to ALIHISGREAT for coming up with the idea of making a cannon from a spud !

Before...

Last post

Are there any barrel requirements/regulations?

2) The barrel must be 2 s long, no longer the 3 s long. Barrel bore at least .177, no bigger then...
37 Replies

7055 Views

Last post by jrrdw
Sun Dec 14, 2008 7:25 pm
First Spudgun

Last post by captaincrash17
Replies: 6
by Moonbogg » Thu Dec 11, 2008 5:03 am

First post

Heres my first gun.

Specs:

Material: Cellcore ABS SCH40, DWV ABS fittings & SCH40 PVC ball valve

Chamber: 4 X 17
Barrel: 2 X 43
C:B Ratio:...

Last post

sweet cannon there! i am looking into my first build and researching on the forums here and your cannon has given me some good ideas

6 Replies

4602 Views

Last post by captaincrash17
Thu Dec 11, 2008 9:14 pm
Experience with C:B Ratio

Last post by Xxplosive42o
Replies: 18
by Xxplosive42o » Tue Dec 09, 2008 6:29 pm
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I am constructing a propane metered combustion cannon, and have viewed several opinions on proper C:B ratios. I have searched and have found people...

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I measured it using one of those rolling measuring units. The pieces of the potato recognizable lay roughly 190 yards from launch point. I used an...
18 Replies

3978 Views

Last post by Xxplosive42o
Wed Dec 10, 2008 10:29 pm
Multishot cannon wont ignite.

Last post by Ragnarok
Replies: 20
by whitewolf » Sat Dec 06, 2008 8:52 am
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Hi all. I have built a gun here, a conversion from a pneumatic that worked but did not live up to its multiple shot ambitions. (hence the barrel)...

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All girl names Rag, come on now.
Well, you want to give it a boys name?
Surely someone (we probably know who) would comment on a matter like...
20 Replies

5030 Views

Last post by Ragnarok
Wed Dec 10, 2008 3:00 pm
Fuel Meter Questions

Last post by Radiation
Replies: 8
by spudkilla224 » Tue Dec 09, 2008 12:55 pm

First post

hello i'm building a advanced combustion cannon and i'm planning on using metered propane.

i'm having troubles with the Fuel-Tool excel program....

Last post

No your PSI will always be about the same, what I'm talking about is that you propane tank will refuse to meter up to 75 psi or so in cold weather...

8 Replies

2257 Views

Last post by Radiation
Tue Dec 09, 2008 5:47 pm
Dual ignition & chamber fan...do they help?

Last post by Radiation
Replies: 23
by Moonbogg » Tue Nov 25, 2008 5:51 am
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Building my first propane spud demon here, and I was just wondering if dual ignition (which I planned for) and chamber fan (which I didn't plan for)...

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Starman, how quickly does your chamber vent? 1 seems small, but with a powerful enough fan it probably does the trick just fine.
23 Replies

8313 Views

Last post by Radiation
Tue Dec 09, 2008 3:28 pm
Just going to ask all my questions at once

Last post by Pyro
Replies: 15
by Pyro » Fri Dec 05, 2008 6:32 pm
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First post

Did some searcing on here and didn't exactly find all the answers I was looking for, so here goes.

#1 My potato gun uses a 6 diameter chamber and a...

Last post

They say the sound of an incoming round is absolutely horrifying... all coming at you at about mach 2.5
There seems to be a a disjoint here - you...
15 Replies

3107 Views

Last post by Pyro
Sun Dec 07, 2008 8:16 pm
Propane Meter help.

Last post by jitup
Replies: 2
by jitup » Fri Dec 05, 2008 11:04 pm

First post

this post is mainly geared twords starman and homedepot pro.

I am currently modifying my spray and pray to use propane and I have it almost done. I...

Last post

thanks I might givr that a try but I found this

for $12.99 at

Is it worth the money, or am I better off with the torch?

2 Replies

1245 Views

Last post by jitup
Sat Dec 06, 2008 7:38 pm
Smoke-generating Silencers

Last post by psycix
Replies: 21
by Tsukiten » Thu Dec 04, 2008 1:36 pm
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So I basically got the idea from this video posted on YouTube:

What you see there is a plastic/metal cilinder attached to some Co2 handgun. Inside...

Last post

...We can not discuss solid propellants here on spudfiles.

On top of that, it would not work very well.
The mix burns too slow to have any effect on...
21 Replies

4451 Views

Last post by psycix
Sat Dec 06, 2008 2:55 pm
meter problem

Last post by jon_89
Replies: 22
by jon_89 » Mon Nov 24, 2008 12:34 am
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Ok so I just built a meter using a inline regulator from home depot. My setup is propane goes through the reg into the meter. But it doesnt seem to...

Last post

So what can I do with this air adjusting valve?
22 Replies

6473 Views

Last post by jon_89
Fri Dec 05, 2008 3:27 pm
Where did the 100 psi assumption come from?

Last post by jimmy101
Replies: 32
by Radiation » Thu Nov 20, 2008 3:57 pm
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On a standard combustion gun it is often tossed around that they are only capable of 100 psi at the most. While I have no evidence to the contrary I...

Last post

Someone with a mechanic buddy needs to ask to borrow his cylinder compression tester and just hook it up to a gun. They're designed to do this exact...
32 Replies

9788 Views

Last post by jimmy101
Thu Dec 04, 2008 1:13 pm
My new combustion cannon

Last post by starman
Replies: 29
by nsane-spuds » Thu Jun 07, 2007 8:42 pm
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Ok guys here's my new gun...

It has a 18'' chamber made out of 3'' abs, a 30'' barrel made of 1.5'' abs It also has a laser sight (gettho, but it...

Last post

what is the fan for venting the gun out after firing ?

that_guy, please don't kick up old subjects.

The fan is for ventilating before and after a...
29 Replies

14656 Views

Last post by starman
Tue Dec 02, 2008 10:35 am
Piezo sparker vs electronic BBQ ignitor

Last post by TurboSuper
Replies: 4
by jmeyer1022 » Mon Dec 01, 2008 6:38 pm

First post

I already have piezo sparker but it seems to need a bunch of click, I'm wondering what the electronic bbq ignitor is like. The one I'm speaking is...

Last post

I have one of those, they work very well.

4 Replies

3500 Views

Last post by TurboSuper
Tue Dec 02, 2008 6:40 am
My 'big spark' mini combustion

Last post by pocket
Replies: 7
by elad311 » Tue Nov 25, 2008 11:10 am

First post

This is my new mini, that works with a big spark,
It took me like a half-hour to make it, and i was really bored.
and everyone can make it, it's fun...

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wow twizi i dont no what to say i want to say stfu but that would be rude i no its been mentiond before but wow that statement was an epic phail.

7 Replies

4120 Views

Last post by pocket
Sun Nov 30, 2008 2:16 pm
Aluminum combustion advice

Last post by john bunsenburner
Replies: 17
by Moonbogg » Fri Nov 28, 2008 4:29 am
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I have received some good advice on this forum about combustion cannons. I want to make one capable of handling pure oxy/acetylene fuel mixtures. Do...

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I have the basic knolage yes but it depends on the specific alloy i use. I cannot really say i have the knolage for every alloy, mostly because i...
17 Replies

4885 Views

Last post by john bunsenburner
Sun Nov 30, 2008 3:39 am
Semiauto combustion airsoft animation

Last post by auxiliary
Replies: 6
by auxiliary » Sat Nov 29, 2008 4:36 pm

First post

I got around to making an animation of my hopefully finalized design that I will be building when I get enough money. The animation does not show the...

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My design does not utilize any combustion power to move the piston/bolt. The only thing moving it is your finger (trigger) and a return spring (which...

6 Replies

2720 Views

Last post by auxiliary
Sat Nov 29, 2008 11:55 pm
HELP can't understand propane meter

Last post by Insomniac
Replies: 19
by spudkilla224 » Wed Nov 19, 2008 6:42 pm
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hello, i want to be able to convince my parents that propane is safe to use in a pressure rated advanced combustion cannon. But i'm getting nowhere...

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Wait a minute, you seem to be a bit confused when it comes to what mixes actually mean.

You CANNOT physically get anything higher than a 1x mix in a...
19 Replies

5587 Views

Last post by Insomniac
Thu Nov 27, 2008 5:19 am

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