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

945063 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

305638 Views

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

Topics

Hydrogen as fuel

Last post by saefroch
Replies: 1
by JABN » Thu Jan 27, 2011 5:47 pm

First post

Would it be a good idea to use hydrogen as a fuel for a cannon and if so like what percentage of hydrogen should there be in the CC.

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Stoichiometry gives you an estimate of a 2:1 ratio of Hydrogen:Oxygen. Given that air is ~20% oxygen, that's a 2:5 Hydrogen:Air ratio, so your...

1 Replies

1421 Views

Last post by saefroch
Thu Jan 27, 2011 7:16 pm
new to site and need some tips...

Last post by jackssmirkingrevenge
Replies: 16
by critter » Tue Jan 25, 2011 9:03 am
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hey guys i decided to build a cannon to mess around with while in maine for the week launching crap across the lake... it was a quick and free build...

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Uh... your link to a 60ml syringe will only yield a 2.8% fuel mixture - :wink:

If you use it once ;)

At 18 inches long, your 3 chamber has a...
16 Replies

7171 Views

Last post by jackssmirkingrevenge
Thu Jan 27, 2011 2:36 am
First Cannon?

Last post by jimmy101
Replies: 7
by topguntravis » Fri Jan 21, 2011 4:44 am

First post

Hey all,
new to the forum but hell keen to make a spud gun.
Hoping someone could point out some instructions to make a combustion spudgun that isn't...

Last post

... and when it doesn't fire you have too much fuel so you need to thoroughly air it out before trying to refuel (too much fuel + more fuel = still...

7 Replies

2555 Views

Last post by jimmy101
Mon Jan 24, 2011 9:07 pm
Which ignition sytem do you like the best and why?

Last post by JABN
Replies: 30
by MadPiper2.0 » Thu Nov 25, 2010 1:33 pm
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Which source of ignition do you prefer? Let's face it, having a menacing spark is half the fun of making a serious combustion cannon. Here are my...

Last post

This is my ignition setup: I made hole in the end cap and taped really well a long nose ligher. This works well in a spray n' pray. The flame won't...
30 Replies

11160 Views

Last post by JABN
Mon Jan 24, 2011 8:42 pm
How much fuel should I put in my cannon?

Last post by Crna Legija
Replies: 5
by JABN » Mon Jan 24, 2011 1:46 pm

First post

I made a medium spray n' pray cannon. Its not a a mini but not the normal size. The barrel uses 1in. pipe and the CB uses 2in. pipe. I was thinking...

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did you have it upside down?

5 Replies

2735 Views

Last post by Crna Legija
Mon Jan 24, 2011 8:33 pm
clear combustion for high speed footage testing

Last post by jackssmirkingrevenge
Replies: 27
by jackssmirkingrevenge » Sun Dec 05, 2010 2:00 am
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First post

I recently changed the dessicant cartridge on our FT-IR spectrophotometer at work, decided to keep the acrylic tube it was housed in. Turns out it's...

Last post

It may be possible to match a length of Nicrome wire to a disposable camera flash capacitor. When the wire is hot, the cap is dead.
It would take...
27 Replies

16130 Views

Last post by jackssmirkingrevenge
Mon Jan 24, 2011 1:48 am
Help with ignition source

Last post by jackssmirkingrevenge
Replies: 14
by thetyzonator » Thu Dec 09, 2010 10:03 am

First post

Hey I live in Canehda so it is impossible for me to obtain a stun gun legally... I was thinking intead like a flint lantern igniter or a BBqsparker....

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See dude, if you post the same question in 2 different topics , you'll still get the same answer, so no need to post twice ;)

14 Replies

5427 Views

Last post by jackssmirkingrevenge
Sun Jan 23, 2011 11:55 pm
Dragunovish rifle

Last post by human
Replies: 20
by human » Fri Aug 27, 2010 8:41 pm
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So i finished my first spudgun!
i was very much inspired and helped by this forum so i would like to share the result with you.

- Carbon chamber...

Last post

mmm agree it wasnt astonishing big news ;) but this is just natural flow of forums all ovr the internet...
20 Replies

12585 Views

Last post by human
Fri Jan 14, 2011 10:04 am
BL 520 inspired build

Last post by Technician1002
Replies: 6
by David1110 » Mon Jan 03, 2011 3:36 pm

First post

Few questions. I recently discovered the BL-520 and it sparked an old flame with cannons I had while I was younger. Questions are as follows:

1. Can...

Last post

Long chambers have the difficulty of end to end circulation. I suspect some of the soot issue with Vera is related to this very topic. Part may be...

6 Replies

3249 Views

Last post by Technician1002
Tue Jan 04, 2011 12:11 am
New advanced cannon

Last post by superspud09
Replies: 10
by superspud09 » Wed Oct 13, 2010 8:17 am

First post

Hello, this is my first advanced combustion cannon. Starting this project i really did not think that a little fan, multiple sparks, and some metered...

Last post

Thanks for all the comments guys I couldn't have done it without all the help from this forum, I plan on putting a barrel support just trying to...

10 Replies

5287 Views

Last post by superspud09
Sun Jan 02, 2011 8:46 pm
CH 081009

Last post by radnac
Replies: 8
by Minion » Sun Nov 07, 2010 2:41 pm

First post

CH 081009
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Last post

i can understand how it works, i just cant really understand how u can hook the spray can up to it. did u use some sorda straw or what?

8 Replies

5485 Views

Last post by radnac
Sat Dec 25, 2010 5:24 pm
Hairspray V butane

Last post by omniscient
Replies: 5
by cfb_rolley » Tue Dec 21, 2010 7:15 pm

First post

So recently, my local store started stocking butane lighter refill cans, and a while ago I saw a small combustion rifle that used the bottom of a...

Last post

The vapor pressure of butane is only a little over 16psi @ 70*F, as compared to 110psi for propane, at the same temperature. Makes it kind of...

5 Replies

4573 Views

Last post by omniscient
Sat Dec 25, 2010 4:36 pm
Propane meter assembly copper vs. PVC?

Last post by metalmeltr
Replies: 6
by CDHraider » Sun Dec 19, 2010 11:09 pm

First post

hey guys, just wondering if there are any problems with building your fuel meter out of 1/2 PVC and 1/2 ball valves instead of copper fittings? it...

Last post

its not his i have seen it on another site-burnte lake?

6 Replies

3680 Views

Last post by metalmeltr
Tue Dec 21, 2010 10:33 pm
Safe to drill through Reducer?

Last post by Technician1002
Replies: 7
by Imkindofabigdeal » Sat Dec 18, 2010 1:22 am

First post

Hey everyone,
If you read what i wrote before, scratch that idea. I came up with a new one, but it really is impossible to word. Jut one question...

Last post

The dimensions on a nozzle is highly dependant on pressure. A nozzle for a 100 psi pneumatic or 1x combustion will closely resemble a bell reducer...

7 Replies

2871 Views

Last post by Technician1002
Tue Dec 21, 2010 4:57 pm
PVC failure video

Last post by jr
Replies: 2
by Moonbogg » Sun Dec 19, 2010 9:57 pm

First post

Came across this video. Maybe some of you have seen it, but its a video of a PVC gun failing right where the shooters hand was placed. He doesn't...

Last post

it was probably DWV.......

2 Replies

2269 Views

Last post by jr
Sun Dec 19, 2010 11:26 pm
TF2 Direct Hit schematics

Last post by Insomniac
Replies: 26
by ChriL » Sat Dec 18, 2010 9:15 pm
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First post

here's the gun i hope to make soon. It's supposed to turn out as a replica of the Direct Hit from the game Team Fortress 2
any suggestions or...

Last post

...

Don't even get me started on hats.
26 Replies

8020 Views

Last post by Insomniac
Sun Dec 19, 2010 10:39 pm
My First Coax Cannon

Last post by Mountain Storm
Replies: 13
by Mountain Storm » Fri Oct 29, 2010 9:40 am

First post

4 x 24 chamber, 2 x 48 barrel, electronic ignition. Still Spray and Pray, but I can see modifying this one for compressed gases.

One thing I...

Last post

Thanks for that tip. I agree a tripod or a someone on the cam would be a great improvement. I'm trying to come up with a target that will maximize...

13 Replies

5696 Views

Last post by Mountain Storm
Tue Dec 14, 2010 9:21 am
Developing District 9 style cannon, chamber help.

Last post by Technician1002
Replies: 12
by Sparrow » Wed Nov 24, 2010 2:31 pm

First post

I saw that the D9 weapons have a nice canister on them similar to a small propane tank, and I designed a cannon with an automatic fuel meter and push...

Last post

The basic small volume chamber and large volume barrel would work well. Starting with a configuration like this air cannon, but combustion should...

12 Replies

6083 Views

Last post by Technician1002
Mon Dec 13, 2010 7:52 pm
Help with fueling setup

Last post by Moonbogg
Replies: 36
by skyjive » Sun Dec 05, 2010 8:35 pm
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Hi, I am thinking of doing some work with combustions, which I haven't done before, and am sort of screwing around with stuff to figure it out. To...

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Don't think a metal chamber won't fail on you. If the punishment is too great and the metal fatigues, it will fail. Pressure vessels begin to form...
36 Replies

12911 Views

Last post by Moonbogg
Sat Dec 11, 2010 3:36 am
Building first cannon

Last post by Wayfast73
Replies: 9
by malibuninja » Sun Nov 21, 2010 7:04 am

First post

hi guys, i have a few questions, and my first is, is abs better than pvc for these?? i will be using deodorant (not sure how propane systems...

Last post

I'd highly reccomend putting a fan in there too. I was disappointed in the performance of mine so I pulled a CPU fan out of a old computer and it...

9 Replies

2758 Views

Last post by Wayfast73
Tue Dec 07, 2010 8:25 am
Stun Gun

Last post by MadPiper2.0
Replies: 6
by Grignacke » Sun Dec 05, 2010 3:45 pm

First post

Hey-o. I bought a stun gun the other day and the clerk would only sell me one that was charged (basically plug in the wall). How should I dismantle...

Last post

We could give you a lot better advice if you included a picture/model number so we could have something to go off of. I would hate for you to mess it...

6 Replies

4635 Views

Last post by MadPiper2.0
Mon Dec 06, 2010 10:45 am
Wireless Remote Trigger

Last post by Imkindofabigdeal
Replies: 10
by Imkindofabigdeal » Mon Nov 29, 2010 9:47 am

First post

Hey everyone,
Last night I finished making my trigger and receiver out of an RC car (took a while, but finally got it. Im sure that everything works,...

Last post

Ok,
Sorry about that last post. I did not realize that i could power the taser itself by a direct flow from a 9v battery to the top of the gun......

10 Replies

3883 Views

Last post by Imkindofabigdeal
Sat Dec 04, 2010 2:26 pm
Propane Tank Regulator

Last post by Lockednloaded
Replies: 6
by BFC » Thu Dec 02, 2010 11:37 am

First post

Hey,

So I am working on a Advanced Combustion, that if I ever get time will get finished, I have most of the pieces I need. Except, a regulator for...

Last post

regulators make it easier if you find a good one, but two BVs work great.

@tech, I believe its the low flow of propane that messes it up, and I'm...

6 Replies

6632 Views

Last post by Lockednloaded
Thu Dec 02, 2010 8:23 pm
Sneak peak of my work in progress.

Last post by MadPiper2.0

by MadPiper2.0 » Sun Nov 28, 2010 9:16 pm

The entire cannon is going to be painted as soon as I get everything set up. Here is the trigger plate I made for it with a dremel. This is just a...

0 Replies

4481 Views

Last post by MadPiper2.0
Sun Nov 28, 2010 9:16 pm
A few questions before starting the second gun!

Last post by saefroch
Replies: 1
by Imkindofabigdeal » Sun Nov 21, 2010 10:55 am

First post

Hey everyone,
I have a few questions before starting my second gun if thats OK:
1. Are vent holes on the combustion chamber any good? On my first...

Last post

The vent holes are probably losing you power, since some of your combustion gases are escaping out of them, instead of propelling your ammo down the...

1 Replies

1302 Views

Last post by saefroch
Sun Nov 21, 2010 11:47 am

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