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...

Last post

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

630698 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

212974 Views

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

Topics

Taser help

Last post by Hotwired
Replies: 1
by wyz2285 » Wed May 18, 2011 2:46 pm

First post

Hi everybody.
As taseres aren´t legal in my country, My dad bought me one in China.
To be able to pass the airport, I asked him to separed the taser...

Last post

Two wires for the battery two for an on/off switch.

Wouldn't take that long to work it out just by trial and error.

Just to be sure, you know the...

1 Replies

1254 Views

Last post by Hotwired
Wed May 18, 2011 3:16 pm
Homemade sparker.

Last post by jackssmirkingrevenge
Replies: 20
by warhead052 » Mon May 16, 2011 5:15 pm
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Does anyone have any tips on making a sparker? I have checked out the reference guide, and looked on youtube and what not, and have really only found...

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Jack, I don't mean to offend you in any way, but it seems to me you don't really like me much.

That's not the case, and I didn't want to give that...
20 Replies

16453 Views

Last post by jackssmirkingrevenge
Tue May 17, 2011 10:10 am
ignition problems for propane

Last post by saefroch
Replies: 15
by bennettjackson » Wed May 11, 2011 8:20 pm
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ok so ive finally got around to testing my propane and used the burnt lake fuel tool and found that if i have a chamber volume of 216 ci, factored in...

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Your question can be answered by checking the phase diagram Tech posted. There is no set value, it is dependent on temperature because there is...
15 Replies

5033 Views

Last post by saefroch
Fri May 13, 2011 5:29 pm
electric circuit

Last post by Technician1002
Replies: 2
by d.marty » Tue May 10, 2011 8:53 am

First post

so im trying to figure out how to wire up my gun... fan and ignition. i have two spark strips, and i bought the electric spark circuit from launch...

Last post

Disposable camera flash units run on 1.5 volts, not 12.

Think what will happen if you plug in a 120 volt appliance into a circuit 8 times higher in...

2 Replies

1738 Views

Last post by Technician1002
Fri May 13, 2011 2:47 pm
Drilling into the pressure chamber?

Last post by jimmy101
Replies: 5
by rcbif » Thu May 12, 2011 4:06 pm

First post

Hey guys, new here. Got a question...........

Working on a combustion spud gun with a 1:1 C:B ratio. The chamber is also the same dia. as the...

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A couple small holes will be fine.

If you are really paranoid then slice up a coupler (cut it in half once longitudinally then once vertically) to...

5 Replies

2382 Views

Last post by jimmy101
Fri May 13, 2011 9:38 am
CRT monitor scavenging

Last post by Technician1002
Replies: 86
by jackssmirkingrevenge » Mon Jan 24, 2011 4:44 am
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First post

We're throwing out a couple of CRT monitors at work, any parts I should scavenge that will help me put together a decent ignition source?...

Last post

A quick note on the Flyback leads. Sometimes the lowest resistance winding is for the CRT filament. It is often only 2 or 3 turns for the ~6 volts...
86 Replies

23745 Views

Last post by Technician1002
Wed May 11, 2011 4:40 am
Propane Meter PSI

Last post by frozenplum4
Replies: 10
by frozenplum4 » Wed May 04, 2011 9:41 pm

First post

I have built a propane meter and am wondering how much psi you use to fill your launcher. I figured it to be 3 psi in the propane meter, that seems...

Last post

Okay, thank you

10 Replies

2820 Views

Last post by frozenplum4
Fri May 06, 2011 6:05 pm
adapting propane injection meter

Last post by metalmeltr
Replies: 8
by bennettjackson » Wed May 04, 2011 5:11 pm

First post

please help, i have everything done for a propane injection system im just a little confused on how to adapt the torch head to the pressure...

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I used to use a short peice of air hose. i heve replace it with the swivel fitting in the post about my gun.

8 Replies

3371 Views

Last post by metalmeltr
Thu May 05, 2011 6:43 pm
magazine system

Last post by frozenplum4
Replies: 5
by bennettjackson » Fri Apr 29, 2011 6:29 pm

First post

does anyone know how or if its possible to have some sort of magazine for a combustion gun, if so please share

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I too have thought about several ways to do this. I don't know if it would be possible to use pvc to make it. And since I don't have a welder I don't...

5 Replies

3063 Views

Last post by frozenplum4
Fri Apr 29, 2011 8:14 pm
Mixing/ventilation fan operation

Last post by Moonbogg
Replies: 3
by bennettjackson » Thu Apr 28, 2011 10:37 pm

First post

i recently installed a fan into my gun but i was wondering approximatley how long to run it for when im mixing the fuel before the launch. also how...

Last post

As long as the fan is near the back of the chamber (furthest away from barrel opening) you shouldn't need a super secure fastening of the fan. The...

3 Replies

1654 Views

Last post by Moonbogg
Fri Apr 29, 2011 1:23 am
Propane Power

Last post by frozenplum4
Replies: 5
by frozenplum4 » Wed Apr 27, 2011 9:22 pm

First post

I just got back into spud guns and have questions about propane. Is it okay to use in guns? And if so what is the easiest way to use it. The gun I...

Last post

Thanks, and sorry I didn't know about the search feature before now.

5 Replies

1814 Views

Last post by frozenplum4
Thu Apr 28, 2011 8:02 pm
help installing a direct propane injection system

Last post by Crna Legija
Replies: 1
by bennettjackson » Thu Apr 28, 2011 6:41 am

First post

alright ive done some research now and i understand how to make one i guess now all i need help with is how to install it onto my gun. Thanks

Last post

didn't do enough research if you cant install it :lol: just thread what you make into your chamber, if you can go through two layers.

1 Replies

1094 Views

Last post by Crna Legija
Thu Apr 28, 2011 3:05 pm
Help with Propane Injection

Last post by MrCrowley
Replies: 2
by bennettjackson » Wed Apr 27, 2011 10:57 pm

First post

i need some help on the parts i need to build a propane injection system and exactly how to build one, and also how to use it. any help is...

Last post

any help is appreciated

Now if you had come to us and said I understand how to build a propane meter but I need help with , that probably...

2 Replies

1315 Views

Last post by MrCrowley
Wed Apr 27, 2011 11:37 pm
Laser Ignition

Last post by ramses
Replies: 15
by jackssmirkingrevenge » Tue Apr 26, 2011 4:34 am
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Interesting ideas , though it looks like it will be a while before they have practical spudgun application.

Last post

Do yo have a link to that laser pistol?
15 Replies

6186 Views

Last post by ramses
Wed Apr 27, 2011 4:32 pm
BL-630 with videos and pics

Last post by mark.f
Replies: 35
by jagerbond » Sun Nov 08, 2009 6:41 am
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Just when you thought it wasn't going to get bigger...

Here's the skinny
- 800 cubic inches of chamber
- 120 barrel length of schedule 80 3
- 1:1...

Last post

I like how you can't realize the scale until you think Hmmm.... that MAPP canister looks like it would fit in the barrel...

Another excellent...
35 Replies

11431 Views

Last post by mark.f
Tue Apr 26, 2011 9:11 am
Problems with my very first combustion spudgun.

Last post by 50bbx
Replies: 24
by 50bbx » Tue Apr 19, 2011 3:44 pm
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Hi,
I'm new here at the forum, I'm not English or American, so I don't speak very good english, but here's my situation: I'm new building a spud gun...

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Ok, tried few days ago and I've perfectly understood why it's called spray and pray... First shot: chamber not even perfectly sealed, range of 30...
24 Replies

11640 Views

Last post by 50bbx
Sun Apr 24, 2011 9:55 am
Advanced combustion problems

Last post by Moonbogg
Replies: 5
by hi » Tue Apr 19, 2011 10:51 pm

First post

I have been spudding for years. certainly long enough to know that this is a very novice question, but here we go:

I made an advanced combustion...

Last post

I think maybe the ignition point should be in the middle of the chamber or the back. Just a hunch, but maybe you aren't getting a full combustion of...

5 Replies

2979 Views

Last post by Moonbogg
Wed Apr 20, 2011 10:59 pm
Trying to figure out what my cannon should look like.

Last post by Igrekun
Replies: 9
by Igrekun » Sun Apr 17, 2011 11:20 am

First post

Hello. I've built 3 cannons. This one has been my first.

Other are not with me now. After reading through all technical aspects of building a spud...

Last post

I'm thinking of using an ignition coil and 9V battery. Something like 30KV igniter i saw on ultimate spudgun. If not spark plugs, then what would you...

9 Replies

3937 Views

Last post by Igrekun
Tue Apr 19, 2011 11:07 am
Power loss in over under vs inline

Last post by jimmy101
Replies: 6
by jor2daje » Sun Apr 17, 2011 8:45 pm

First post

Hey guys Im starting work on a fairly large combustion with 3 chamber and 1.5 gb barrel, I think I have most of the design figured out but cannot...

Last post

I seriously doubt you will get anywhere near the SOS in the chamber of a combustion gun. Figure the gas temp is up over 2000C so the SOS is...

6 Replies

3053 Views

Last post by jimmy101
Mon Apr 18, 2011 5:25 pm
Searching for pressure rated PVC larger pvc50

Last post by cfb_rolley
Replies: 6
by cfb_rolley » Sun Apr 17, 2011 12:35 am

First post

So, I live in Australia and I'm having some issues trying to find pressure rated PVC pipe and fittings larger than pn8 pvc50 (which is about 65mm...

Last post

ahh bummer, so it's probably still not really good to use in an adv. combustion then...

6 Replies

2122 Views

Last post by cfb_rolley
Sun Apr 17, 2011 6:24 pm
Two Very Old Cannons

Last post by mark.f
Replies: 5
by mark.f » Fri Apr 16, 2010 10:51 pm

First post

Blasts from the Past!

These are posted in the Archive, but the pictures don't work.

I've just come across a stash of old cannon pictures, and...

Last post

Well, PVC is cheap, but how do I make up for not having Indian spirits housed in my cannons? Can I buy those at the hardware store? :roll:
Also, is...

5 Replies

3200 Views

Last post by mark.f
Sat Apr 16, 2011 9:44 am
sparkers

Last post by mark.f
Replies: 3
by bmxnick123 » Fri Apr 15, 2011 9:33 am

First post

I've recently made a spud gun, and the sparker keeps braking after about 10 shots. its one of the ones you get out of a bbq lighter but what else...

Last post

I've recently made a spud gun, and the sparker keeps braking after about 10 shots. its one of the ones you get out of a bbq lighter but what else...

3 Replies

1573 Views

Last post by mark.f
Fri Apr 15, 2011 10:05 am
spark gap

Last post by Major Collins
Replies: 8
by Major Collins » Wed Apr 13, 2011 10:57 pm

First post

on a hybrid the the spark gap has to be smaller in order for it to work right?
if you have a continuous spark does the spark gap still have to be...

Last post

oh so in return of the amount of sparks is the amount of power ,i see all good

8 Replies

2618 Views

Last post by Major Collins
Thu Apr 14, 2011 2:11 pm
new to combustibles

Last post by jackssmirkingrevenge
Replies: 8
by Major Collins » Mon Apr 11, 2011 9:23 am

First post

i want to make a combustible a certain way with ideas in mind but a little indecisive , i made the old fashion combustible a couple years back
bbq...

Last post

I just realised that there is an upsidedown wolf in the spoon of DYI's avatar. :D

I can't remember what the original post was but for some reason I...

8 Replies

2124 Views

Last post by jackssmirkingrevenge
Tue Apr 12, 2011 5:23 am
My SPAS12

Last post by saefroch
Replies: 32
by ijahman » Mon Oct 25, 2010 4:43 pm
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hi everyone this is my latest combustion cannon, its not completely finished yet but it is fully functional.
ghetto powaa
sorry for bad sound on...

Last post

What ramses is asking, is If somebody pulled the trigger with the slide forward, would it cause damage?

This is a really awesome build, I'm very...
32 Replies

17034 Views

Last post by saefroch
Fri Apr 08, 2011 5:28 pm

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