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

954969 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...

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great job how can i help the fourms
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Last post by quinn whitsitt
Fri Mar 01, 2024 10:52 am

Topics

gas or hairspray

Last post by WEEMAN
Replies: 18
by WEEMAN » Mon Oct 01, 2007 3:29 pm
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what acellerant would work for a smaller combustion gun(small being about
5feetlong x 5inches wide)hairspray or propane
and.......
i want to know...

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what have i started???
thnks anyways
look for the pics i gonna post its basicly a 5 foot long pipe with some straps and two of those little propane...
18 Replies

5974 Views

Last post by WEEMAN
Tue Oct 09, 2007 5:00 pm
12/12/06 Big Update - The Taternator II Aluminum Spud Gun

Last post by Redcoat
Replies: 49
by Dumbascii » Wed Nov 29, 2006 6:07 pm
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12/13/06 Speed test results are posted here

12/12/06 Big Update: Got the new 8' barrel! Using Oxygen/MAPP at atmospheric pressure yielded a 25%...

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That is one wicked-arse gun. I love the stand for it, Looks like it's come straight from a park swing. What kind of range do you get out of it?

A...
49 Replies

25156 Views

Last post by Redcoat
Tue Oct 09, 2007 5:17 am
Advanced combustion launcher - Resurrected

Last post by ammosmoke
Replies: 26
by SpudBlaster15 » Wed Aug 01, 2007 11:53 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...

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It looks like he used a threaded male pipe adapter, not endplug. Seems like a pretty obvious solution to me...
26 Replies

12666 Views

Last post by ammosmoke
Mon Oct 08, 2007 10:21 pm
chamber fan question

Last post by mtronic
Replies: 3
by Lentamentalisk » Mon Oct 08, 2007 12:24 pm

First post

I have heard that adding a chamber fan will increase performance by 30%, is that true?
also do you keep it running the entire time, or shut it off...

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I just used mine to mix and vent, mine didnt want to fire for some reason while the fan was running :( I think my spark gaps were too close to the...

3 Replies

1600 Views

Last post by mtronic
Mon Oct 08, 2007 5:06 pm
over under camo cannon now with DMG

Last post by mtronic
Replies: 14
by mtronic » Sun Jul 15, 2007 2:34 am

First post

this is my second combustion that I affectionately named Attila

I made this one out of all the scraps that I had left over from my first cannon. I...

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yeh thanks man, um I live a bit out of Sydney so if you live in Australia then you'll probably find them at the plumbing shop, just make sure you get...

14 Replies

4927 Views

Last post by mtronic
Mon Oct 08, 2007 4:57 pm
CSG24-EI

Last post by Lentamentalisk
Replies: 5
by BigGrib » Sun Oct 07, 2007 11:10 pm

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Ok here is my gun. Couldn't get my digital camera working so these are all cell phone pics. This gun features a 24 inch long 4 inch diameter chamber,...

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lol your pictures look like you just set off a smoke bomb! I have never seen a picture so misty... from what i can see it looks nice though

5 Replies

2582 Views

Last post by Lentamentalisk
Mon Oct 08, 2007 12:22 pm
Need plans for a monster

Last post by BigGrib
Replies: 14
by randas » Wed Oct 03, 2007 4:22 pm

First post

Ok, ive already made 1 cannon before finding this site. Its very loud but dosent get good range. Now i want to try again and buld the most powerful...

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At standard pressures, with a fixed chamber size, a C:B ratio of about .25:1 will give you the most power. Unfortunately, it will also give you...

14 Replies

5106 Views

Last post by BigGrib
Sun Oct 07, 2007 10:38 pm
need help with propane meter

Last post by psycix
Replies: 20
by darknes » Thu Oct 04, 2007 6:37 pm
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hi, i have just finished building my first propane cannon and i need help with the meter pipe. i have a meter pipe made that is 14 inches long and...

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With such a long chamber i would recommend multiple fans and at least 4 spark gaps.
20 Replies

6896 Views

Last post by psycix
Sun Oct 07, 2007 1:41 pm
Reason for Piezo BBQ lighter failures

Last post by BigGrib
Replies: 8
by azapa » Fri Oct 05, 2007 1:35 pm

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I have tried many ignitions, but the BBQ lighters (piezo pushbuttons) are so easy to install and small. But I, and everyone else it seems, hate the...

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My solution to the stun gun ignition and the 9v battery pricing crisis is to get a AA battery powered bbq ignitor. the one i have is 12kV and has two...

8 Replies

3656 Views

Last post by BigGrib
Sun Oct 07, 2007 3:12 am
Barrel Chamfering

Last post by BigGrib
Replies: 9
by BigGrib » Thu Oct 04, 2007 11:53 pm

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I've been looking around at all the different guns people have built and i have noticed one thing the have in common. Chamfering the muzzle of a...

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Definatley right about heck of a time jamming the tater down the barrel, definatley gonna have to do a little work now that i have started making a...

9 Replies

3444 Views

Last post by BigGrib
Sun Oct 07, 2007 3:07 am
Seperating pure Ether from starter fluid-

Last post by redchigh
Replies: 27
by redchigh » Sat Sep 29, 2007 8:25 am
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I've had questions, so here you go.

I spray starter fluid in a clear bag with cold water- The hexane/heptaine mixes with the water. Tie off the bag,...

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Actually, I modified a spray nozzle to release close to a specific amount of liquid in the chamber, close the lid, fan the chamber, and BOOM....
27 Replies

18984 Views

Last post by redchigh
Sat Oct 06, 2007 11:24 pm
Rambo Would Be Proud!

Last post by utz
Replies: 39
by utz » Sun Jul 08, 2007 10:38 pm
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Three weeks ago I had never seen a potato gun. Two weeks ago I made my first gun. This weekend I made my second gun. This gun is simular to my first...

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Yes but they are not sharpe enough to cut you.
39 Replies

17911 Views

Last post by utz
Fri Oct 05, 2007 6:33 pm
Ammo

Last post by BigGrib
Replies: 4
by BigGrib » Thu Oct 04, 2007 9:36 pm

First post

So I've been on the hunt for the perfect ammo for a 2 barrell. Now don't get me wrong, I'm not downing potatoes as a viable source of ammunition for...

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yeah that is the problem they are like almost 3 usd a pop but got do they do some damage.

4 Replies

2302 Views

Last post by BigGrib
Fri Oct 05, 2007 11:20 am
combustion burst disc mini

Last post by DYI
Replies: 7
by thespeedycicada » Fri Sep 28, 2007 11:16 pm

First post

I have created a very ghetto but very powerful mini.the pen tubes are not just taped together i used epoxy and tape its small but packs a WHOLLOP!!...

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Combustion acts like the valve in a combustion launcher, and takes several milliseconds to take place. If the pressure is contained until it reaches...

7 Replies

2386 Views

Last post by DYI
Thu Oct 04, 2007 4:30 pm
How many holes are too many?

Last post by psycix
Replies: 18
by shiftyguy » Mon Sep 24, 2007 8:29 am
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I have an 18 x 3 Chamber and i have bored the following holes and screws into it over the recent days trying to get different things to work.

3...

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no caned beer here only bottles.....

That would be awesome!
I hate canned beer.. beer in bottles has a much better taste
18 Replies

4795 Views

Last post by psycix
Thu Oct 04, 2007 3:36 pm
Camera Flash Circuit Questions & Comments

Last post by jimmy101
Replies: 38
by irishguy » Thu Sep 27, 2007 8:33 pm
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hi i can seem to get my flash camera to work when the capacitor charges so does the wires now extending from where the bulb was should this happen i...

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One solution to a solid state switching setup is to use a solid state relay . Bascially a big-ass SCR. New ones can be pretty pricey so get one from...
38 Replies

11104 Views

Last post by jimmy101
Thu Oct 04, 2007 12:01 pm
fully auto jobbie

Last post by robbo@robbo
Replies: 14
by robbo@robbo » Tue Oct 02, 2007 4:39 am

First post

hiya all i was thinking the other day and decided to build a fully auto cannon with 5 barrels that rotate, most of it i have worked out but i still...

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lol just 2 let everyone know all the ideas are compiled and the plans half done, ill post them all 4 u to pull to pieces :P

14 Replies

3948 Views

Last post by robbo@robbo
Thu Oct 04, 2007 1:48 am
Black Widow Sniper

Last post by tommy90
Replies: 31
by sruggles » Sun Mar 11, 2007 12:57 am
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This is my newest propane injection cannon.

It has a 4 inch double walled sch 40 chamber and a 2 inch barrel sleeved to 1.7 inches for golf balls....

Last post

... nice .... how much all up ? ?
31 Replies

13084 Views

Last post by tommy90
Wed Oct 03, 2007 8:36 am
My UK scavaenged cannon

Last post by robbo@robbo
Replies: 8
by Dave_424 » Thu Aug 02, 2007 8:01 am

First post

This is my cannon, as i live in the UK it is next to impossible to get the 3 cleanouts so I have made a cannon from the scavenged parts from my...

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i used a simular part for my chamber, but i ground the tube on the inside off to help combustion, it is a smaller cannon though only a 1 inch barrel,...

8 Replies

3094 Views

Last post by robbo@robbo
Wed Oct 03, 2007 5:16 am
M3 look a like combustion cannon

Last post by robbo@robbo
Replies: 10
by jaffe » Tue Sep 25, 2007 2:13 pm

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I was looking on youtube for any idea´s for a next spudgun, I found a video. It was a gun that looks like a AK-74 but use´s single shot combustion...

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not a bad idea, what about if you used propain, then it's already under pressure but you'd have 2 mix air too ?

10 Replies

3758 Views

Last post by robbo@robbo
Tue Oct 02, 2007 7:00 am
Advanced Combustion Ratio and Fueling questions

Last post by jimmy101
Replies: 11
by cwazy1 » Sat Sep 29, 2007 11:38 pm

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So, this is going to be my first propane powered combustion cannon in a linear design. i will be using a 100k stun gun with 3 or 4 gap jumps to...

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That doesn't make sense to me.

If your chamber is too big for your barrel, at least out to a certian extent, there shouldn't be any loss of...

11 Replies

6842 Views

Last post by jimmy101
Mon Oct 01, 2007 4:17 pm
Sticking cap

Last post by jimmy101
Replies: 6
by Potato Head » Mon Oct 01, 2007 12:08 am

First post

Hey spud gunners

I got an issue. My top keeps getting stuck. I tried a few different greases but none seem to help. I have tried cutting down the...

Last post

Like silverdooty said, read the Latke page.

Lubricants don't really work very well on the cleanout plugs, at least in my experience.

Teflon tape...

6 Replies

2813 Views

Last post by jimmy101
Mon Oct 01, 2007 3:58 pm
fly zapper ignition

Last post by Hotwired
Replies: 7
by super spuder » Sat Sep 29, 2007 2:28 pm

First post

i am pondering different ways to ignight my new combustion gun, and i noticed we had an electronic fly zapper laying around, se i was sticking a...

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I measured the voltage of one of those to be ~700V, IIRC.

The ones I've seen claim 1500 to 3000v but advertisers do tend to be optimistic...

7 Replies

2460 Views

Last post by Hotwired
Mon Oct 01, 2007 10:12 am
What's your FoC? (Fuel of Choice)

Last post by mtronic
Replies: 10
by redchigh » Sat Sep 29, 2007 8:21 am

First post

No oxygen allowed, whats your favorite (reasonably economical) fuel?

List your favorite fuel, and why.

I like Ether.
See the link here-

Last post

starter fluid and a small amount of mapp gas for extra fire power!

10 Replies

3158 Views

Last post by mtronic
Mon Oct 01, 2007 2:56 am
rubber bung / reloading

Last post by The Kid
Replies: 10
by maddman234 » Tue Sep 18, 2007 3:59 am

First post

hey i was wondering how to put a rubberbung or a vaulve on my spud gun so i dont have to keep unscrewing the back cap to put my propellent plz help

Last post

true so true chaos

10 Replies

2672 Views

Last post by The Kid
Sun Sep 30, 2007 5:36 am

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