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...

Last post

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

1125009 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

358226 Views

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

Topics

el cañón de la combustión de 55mm

Last post by Ragnarok
Replies: 69
by jackssmirkingrevenge » Fri Nov 14, 2008 7:32 pm
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First post

This is my last planned project here, nothing exceptional or innovative but hey. 55mm bore, 1.30 metre barrel and a 95mm chamber giving a C:B ratio...

Last post

About 100 bits of rolled up tissue paper each about the size of a paintball.
I don't think they can have been travelling any faster than about 30-40...
69 Replies

19170 Views

Last post by Ragnarok
Wed Nov 26, 2008 5:32 pm
Advanced Combustion Chamber To Barrel Ratio?

Last post by psycix
Replies: 5
by spudkilla224 » Tue Nov 25, 2008 7:19 pm

First post

hello, i'm planning on building a advanced combustion cannnon using metered propane. and my question is what's a ideal Chamber To Barrel Ratio for a...

Last post

Only drawback on larger chambers is that burn time may increase, so multiple spark gaps would surely help.

5 Replies

1907 Views

Last post by psycix
Wed Nov 26, 2008 2:37 pm
Bell Reducer For Advanced Combustion Cannon?

Last post by starman
Replies: 12
by spudkilla224 » Thu Nov 20, 2008 5:45 pm

First post

Hello, i have a basic combustion cannon. and i have had it for a while. and i think it's time for me to try metered propane.

my question is a dwv...

Last post

The dominate farm environment there in Ohio may make the difference in how Home depot stocks the stores. The 'burbs are dominate in my area so...

12 Replies

5364 Views

Last post by starman
Wed Nov 26, 2008 2:20 am
Finally, a good pvc! (and chamber help)

Last post by psycix
Replies: 6
by elad311 » Mon Nov 24, 2008 10:30 am

First post

Today i went to a shop..
and i saw a between the thin PVC (as usual..),
a black pvc(i think it was a pvc), and i couldn't bend it..
so i finally...

Last post

Hmm cant really tell from that pic.
Should be okay for a comby.

Whats the wall thickness?

6 Replies

2306 Views

Last post by psycix
Tue Nov 25, 2008 11:26 am
new over/under cannon(lots of pics)

Last post by starman
Replies: 33
by stevenarroyo » Thu Oct 23, 2008 11:33 am
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i just finished making my new over/under potato cannon.

detains
chamber 3 x 12
barrel 1 1/2 x 36
over/under style
propane metering with fan
spark...

Last post

Dude starman, that avatar or icon you use is freakin crazy as hell man. Just the size of the explosions in relation to the sizes of the ship's...
33 Replies

13111 Views

Last post by starman
Tue Nov 25, 2008 9:00 am
Spark not jumping gap

Last post by Moonbogg
Replies: 2
by Moonbogg » Tue Nov 25, 2008 3:16 am

First post

I have my cumbustion gun under construction and I am working on the spark gap with a stun gun. I had the screws through the combustion chamber and...

Last post

It is ABS pipe. I just fixed it. I isolated the spark wires with plastic tubing and it works perfect now. I am suffering from noobism a little. First...

2 Replies

1791 Views

Last post by Moonbogg
Tue Nov 25, 2008 5:10 am
Combustion Chamber pressure

Last post by psycix
Replies: 2
by ralphd » Sun Nov 23, 2008 8:36 pm

First post

I noticed in some research for my second launcher that some people, who use metered fuel, actually have a bleeder port which would be open when...

Last post

From what you describe I can remember people whose fuel meter is filled up slowly (bleeding). This is always open.
And then when fueling they press a...

2 Replies

1397 Views

Last post by psycix
Mon Nov 24, 2008 4:08 pm
UPDATED x 2 !! WMD - Now with 360 view and damage pics!!

Last post by YEAHADD16
Replies: 65
by Hailfire753 » Sat Jun 30, 2007 1:21 pm
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Hey, whats up! :P Its my second post, and here is my first spudgun ! It cost me about $ 50, and took most of 4 (5?) days to assemble and cool-ize. 8)...

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i dont know if someone said this, but is the thing on the end a silencer. If it is and it works, then that is freaking BAD A**
65 Replies

23878 Views

Last post by YEAHADD16
Mon Nov 24, 2008 1:54 pm
my first full size combustion

Last post by elad311
Replies: 4
by nibbler125 » Sat Nov 22, 2008 8:13 pm

First post

for the longest time I worked with mini spudguns. (mostly because my parents were worried about the larger ones) so after convincing them I know what...

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cool cannon! :)
but, 50 yards?
it doesn't sounds very powerful to me..
next time, use a chamber with a bigger diameter. 8)

4 Replies

2287 Views

Last post by elad311
Mon Nov 24, 2008 10:44 am
First cannon

Last post by starman
Replies: 14
by PythonWallace » Fri Nov 21, 2008 4:55 pm

First post

Here is a small gun I made last week. I thought I was being original by making a spark gap for ignition, and for bending he chamber down around the...

Last post

Just replace the momentary switch for the fan with a plain on/off switch. You'll want to run the fan for A) mixing air and fuel, B) during...

14 Replies

6412 Views

Last post by starman
Sat Nov 22, 2008 10:25 pm
My golfball Cannon

Last post by Cannibal Corpse
Replies: 3
by Cannibal Corpse » Wed Nov 19, 2008 4:58 pm

First post

Well title says it i finally got off my but and took some pics of it.
It's got a 4.in by 2ft chamber and 5ft 2in sleeved in 2in for the barrel.
It's...

Last post

Well the burns are from the old bolts i had that were to small ive replaced them with bigger bolts, no more burns. Um its got a metering system, i...

3 Replies

2582 Views

Last post by Cannibal Corpse
Wed Nov 19, 2008 5:58 pm
Inline airsoft Tippmann C3 design

Last post by auxiliary
Replies: 5
by auxiliary » Sun Nov 16, 2008 7:25 pm

First post

I came up with an inline and airsoft version of Tippmann C3. Here's the C3:

What makes my design different from the C3 is that the check valves...

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I guess I was being lazy by implementing a check valve fuel injection system just because it could be made so easily and fits in perfectly with the...

5 Replies

3308 Views

Last post by auxiliary
Tue Nov 18, 2008 7:47 pm
can someone crunch the numbers for me?

Last post by rp181
Replies: 9
by super spuder » Sun Nov 02, 2008 10:28 am

First post

If i have a 30 inch piece of 3 inch pipe, how long of propane metering tube will i need in 3/4... how long for 1/2? and about 50 PSI... if thats a...

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A question about spudbux is sure to lead to a locked thread...

They are just for fun, but you can buy a signature,

9 Replies

4623 Views

Last post by rp181
Mon Nov 17, 2008 9:47 pm
A question about chamber length

Last post by psycix
Replies: 4
by elad311 » Mon Nov 17, 2008 9:52 am

First post

Is it ok to use a 2 dia 36 length PVC,
or a 4 dia 18 length PVC as a chamber, because
I can't find any PVCs with a bigger diameter than 3 .so.. will...

Last post

Jack, you are completely correct, UNLESS someone is using more then 1 sparkgap.
When using multiple evenly spaced spark gaps, your chamber may be...

4 Replies

1507 Views

Last post by psycix
Mon Nov 17, 2008 2:04 pm
Hello?!

Last post by psycix
Replies: 5
by SpudsMcGee » Sun Nov 16, 2008 1:35 pm

First post

I'm working on building a little pistol to shoot darts with and I was wondering if I could use my old electric air soft pistol's base to send the...

Last post

Yep, for a spark you need a high-voltage system, and the electric system in your pistol is nothing like that.
Take everything out and put a high...

5 Replies

1734 Views

Last post by psycix
Mon Nov 17, 2008 6:45 am
A question on over/ under guns

Last post by psycix
Replies: 3
by cowkiller » Sat Nov 15, 2008 12:27 am

First post

If the chamber is below the chamber the barrel does that reduce the pressure that is delivered to the projectile?

I was just thinking about here in...

Last post

On top of it, your flamefront needs to get into the bends for all fuel to burn.
Adding a spark gap IN the bends would certainly help.

3 Replies

1684 Views

Last post by psycix
Sun Nov 16, 2008 6:38 pm
*URGENT* Need Combustion Cannon Videos!

Last post by VH_man

by VH_man » Sun Nov 16, 2008 1:40 pm

Well, As some of you might know, Im making a history of spudguns video.

Its far more non-historical than orricinally intended, but I have a question...

0 Replies

1996 Views

Last post by VH_man
Sun Nov 16, 2008 1:40 pm
Chamber and barrel help!

Last post by TurboSuper
Replies: 4
by elad311 » Sun Nov 16, 2008 11:11 am

First post

Ok, I found an awesome plastic fan for a combustion, it's really good
and it works with only one AA battery, BUT, the diameter
of the fan is 2.5 ,...

Last post

You know, you can make a mounting bracket for a small fan with a spare piece of metal. You really don't want a chamber <3 anyways.

4 Replies

1742 Views

Last post by TurboSuper
Sun Nov 16, 2008 1:25 pm
Quick PVC Joining Question

Last post by jook13
Replies: 5
by newbmatic » Wed Nov 12, 2008 6:04 pm

First post

Hi guys,
I was just wondering if it would be OK to epoxy PVC pipe and fittings together with epoxy for a small combustion launcher. And also, what...

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Just wondering, why don't you get some primer and pvc cement? Its not expensive and there is no arguing that primer/cement is the best and safest way...

5 Replies

2056 Views

Last post by jook13
Wed Nov 12, 2008 8:54 pm
potato shotgun

Last post by CS
Replies: 5
by nibbler125 » Wed Nov 12, 2008 3:16 pm

First post

here is a peek into my super secret project. the pump action potato shotgun. it works by using the barell as the bolt to bite off a hunk of potato...

Last post

I might add that when you try to be cute and funny you not only waste the authors time, but more importantly the potentially hundreds of readers.

To...

5 Replies

2789 Views

Last post by CS
Wed Nov 12, 2008 5:48 pm
Secret Weapon (Spray & Pray)

Last post by mark.f
Replies: 12
by EphOph » Sat Nov 01, 2008 7:53 pm

First post

This is a spray & pray combustion I built in April 2008. It is called Secret Weapon because it is fueled with aerosol Secret (women's deodorant)....

Last post

That looks pretty cool. Keep us up to date on the next combustion!

12 Replies

5733 Views

Last post by mark.f
Wed Nov 12, 2008 12:31 am
my first combustion

Last post by starman
Replies: 5
by zach12 » Sun Nov 09, 2008 4:32 pm

First post

hey,
Finally!!! My first combustion. Pretty plain and simple. A pezio grill sparker. A ghetto chamber fan :wink: (made from a 9v battery, a on off...

Last post

There has been some that incorporate a timer that will turn the fan off automatically rather than you doing it manually. This is obviously a luxury...

5 Replies

2947 Views

Last post by starman
Tue Nov 11, 2008 7:38 pm
semi-auto combustion #3

Last post by auxiliary
Replies: 11
by auxiliary » Sun Nov 02, 2008 7:44 pm

First post

(look at the diagram first)

So here's how it works... The spark in the combustion chamber ignites the propane. The BB shoots out of the barrel and...

Last post

That is exactly how it works, I couldn't have figured that out without the help of this brochure I got from emailing Tippmann...

11 Replies

8315 Views

Last post by auxiliary
Mon Nov 10, 2008 7:39 pm
massive chamber and small barrel diameter

Last post by Ragnarok
Replies: 9
by jackssmirkingrevenge » Mon Nov 10, 2008 5:27 am

First post

What would happen if you had a large (several litres) chamber that only had a small vent to exhaust out of? I'm thinking (if the word really applies)...

Last post

Off hand I would think just putting 50 BBs in a sabot and firing'm like a shotgun shell would be easier.
I've been longing to do this for quite some...

9 Replies

3898 Views

Last post by Ragnarok
Mon Nov 10, 2008 6:02 pm
fuel air mixtures left for extended periods of time

Last post by starman
Replies: 20
by jackssmirkingrevenge » Thu Nov 06, 2008 7:48 am
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One for you theorists, as above - good or bad thing for combustion? Would it result in a homogenous mix over time (24 hours plus) or would the fuel...

Last post

waffles again.

:? :?: Uuhhh, Belgian or Eggo?
20 Replies

6800 Views

Last post by starman
Sat Nov 08, 2008 2:41 am

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