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

639024 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
45 Replies

214555 Views

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

Topics

Inline vs Over-Under

Last post by BigGrib
Replies: 5
by Hubb » Wed Jul 30, 2008 8:17 am

First post

I'm currently designing another combustion which will have a chamber of 3 Sch40 chamber 18 long, over/under. My current launcher has a 3 Sch40 x 12...

Last post

It all depends on how compact you want your cannon. That's a question that only you can answer.

5 Replies

1757 Views

Last post by BigGrib
Fri Aug 01, 2008 12:52 am
"SMG" Combustion

Last post by blind909
Replies: 8
by blind909 » Wed Jul 30, 2008 8:14 pm

First post

Ok, here is my first actual combustion(pillbottle minis dont count). The chamber is 2 inch aluminum(8 inches long), and the barrel is 1 inch pvc(8...

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I guess so, And Im a pnuematic man, not a cumbustion anyway :wink:.

8 Replies

2193 Views

Last post by blind909
Thu Jul 31, 2008 3:14 pm
Propane torch compression fitting?

Last post by starman
Replies: 4
by daberno123 » Wed Jul 30, 2008 2:17 pm

First post

I'm starting to get the propane meter together for my upcoming combustion gun. I've heard that using a big pipe wrench you can take off the angled...

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BTW, I forgot to credit DYI for illuminating this process to me to begin with. It SOOooo changed how I did the whole propane adapter thing.

Thanks...

4 Replies

1279 Views

Last post by starman
Thu Jul 31, 2008 3:03 am
Measureing Combustion Pressure (PSI Gauges)

Last post by Hubb
Replies: 8
by Deadeye » Thu Jul 24, 2008 6:20 pm

First post

In an effort to perfect the best fuel mix I want to install a peak pressure gauge to basically record the combustion pressure of each shot.

My...

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What about using a liquid to measure the pressure? Here is a simple sketch of what I mean.

The hot gases from the chamber will put pressure on the...

8 Replies

3461 Views

Last post by Hubb
Wed Jul 30, 2008 1:04 pm
my second cannon!

Last post by jackssmirkingrevenge
Replies: 52
by KRN » Sat Jul 26, 2008 11:54 pm
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This is my latest project, made it with Franklin

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did you not pay attention in science lessons? ;)

As a true spudder, I was obviously too busy sketching away at my latest diabolical device ;p
52 Replies

13414 Views

Last post by jackssmirkingrevenge
Tue Jul 29, 2008 11:57 pm
Coaxial Questin

Last post by TurboSuper
Replies: 7
by magnum9987 » Mon Jul 28, 2008 8:49 pm

First post

I have settled on building a coaxial, for its compactness for combat use (Yay). I have settled on a 1.5 in barrel and 54in long. I only want the...

Last post

How crappy can your compressor be? You can charge a pneumatic with a bicycle pump.

7 Replies

1891 Views

Last post by TurboSuper
Tue Jul 29, 2008 5:45 am
Franks Simple Combustion

Last post by starman
Replies: 10
by frankrede » Mon Jul 28, 2008 9:03 pm

First post

3 chamber
1.5 barrel
LOTS OF FUN!
Its nice going back to basic.

Last post

Cool Frank...a his and hers model now huhhh... :wink: I'm glad you're having fun with them. There's something kind of primal about the basic...

10 Replies

2689 Views

Last post by starman
Tue Jul 29, 2008 12:35 am
My adv comb. NEWER UPDATE: full gun VIDEO

Last post by TwitchTheAussie
Replies: 13
by uncomplientspud » Wed Jun 04, 2008 9:40 pm

First post

Linky for those who don't want to scroll down to the bottom

Well after the success of my first gun, i decided it was best to retire it for safety...

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Jaesus Christ mate. Is it long enough for ya? :shock: All in all still bloody great mate :thumbright:

13 Replies

6984 Views

Last post by TwitchTheAussie
Mon Jul 28, 2008 6:43 pm
Silicone Sealant ?

Last post by taytayswims
Replies: 3
by taytayswims » Mon Jul 28, 2008 1:36 pm

First post

i just bought an electric grill igniter and the only thing i have to seal it is a silicone gel that hardens. i am not sure about the reliability of...

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thanks turbo i just added some jb weld to the inside of the chamber so once it dries i will post it and mabey get some damage pics

3 Replies

1449 Views

Last post by taytayswims
Mon Jul 28, 2008 1:59 pm
Camera Circuit Question

Last post by TurboSuper
Replies: 11
by Hubb » Sun Jul 27, 2008 11:30 am

First post

I've been doing research on camera circuits for ignition. All over the wiki, it says to use an ignition coil. Well, this wouldn't be a problem if I...

Last post

@turbo: I'm well aware of what I described. While it is a trigatron, I was describing the construction of inexpensive, replaceble(if need be), and...

11 Replies

3121 Views

Last post by TurboSuper
Sun Jul 27, 2008 10:01 pm
Movie special effects spudgun

Last post by sirspuddest
Replies: 17
by skyjive » Wed Jul 23, 2008 7:23 pm
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So I have this friend who is seriously into making movies and wants me, as the resident guy in charge of things that shoot and blow up, to do some...

Last post

Good info. Estes rocket ignitors a little more reliable and safe....

Probably borders on passing the no-discussion rule re. powder/explosives....but...
17 Replies

6082 Views

Last post by sirspuddest
Sun Jul 27, 2008 9:28 pm
Im Confused........

Last post by jimmy101
Replies: 16
by noobyspud » Fri Jul 25, 2008 8:25 am
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just got ma pvc pipe for my 1st cannon of which is about to be build and i was woundering weather or not with the barrel being 5ft long should i have...

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Learn the short-cuts after you know the fundamentals...reasonable?
Good point. And you need the chamber volume anyway to calculate tha fuel volume...
16 Replies

5106 Views

Last post by jimmy101
Sun Jul 27, 2008 11:43 am
New Potato Gun User, Please Help

Last post by nosebleedXD
Replies: 81
by nosebleedXD » Mon Jul 21, 2008 10:41 pm
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Ok i basically got my first potato gun model built together with abs piping, just a simple combustion chamber with a barrel attached to the end

and...

Last post

LOL starman

guys i appreciated it, thanks a lot i'll post a video of me shooting something with my gun this time while it works instead of cap...
81 Replies

26077 Views

Last post by nosebleedXD
Sat Jul 26, 2008 5:34 pm
Trouble with spark ignitor - HELP!

Last post by rp181
Replies: 33
by AJChambers91 » Sat May 31, 2008 1:07 am
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so this is our first cannon completed 1.5:1 C:B ratio

here is the chamber itself

here are the screws we have meeting in the chamber to create the...

Last post

atleast say who its from =) (tesladownunder)

EDIT: oh, the here is a hyperlink... =p
33 Replies

8351 Views

Last post by rp181
Fri Jul 25, 2008 5:43 pm
Clear Combustion Chamber Dilemma

Last post by daberno123
Replies: 20
by daberno123 » Tue Jul 22, 2008 4:06 pm
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First post

Alright my dilemma is the material used for the chamber.

The two options are 4 clear pvc and 4.5 OD polycarbonate tubing with 1/8 thick walls. I...

Last post

Thanks jimmy, 1129 was just a number I pulled off google. SOS wasn't really something I was aiming for, I just noticed that it was close in HGDT....
20 Replies

5119 Views

Last post by daberno123
Thu Jul 24, 2008 5:07 pm
Stun Gun ignition problem

Last post by sirspuddest
Replies: 7
by kellon17 » Wed Jul 23, 2008 1:36 am

First post

Hey guys! I'm working on my first gun and it's an advanced combustion. I just finished wiring up the stun gun to allow for 2 sparks. My problem,...

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You really don't have to worry about whether or not epoxy will hold. I'm sure it will hold up just fine.

7 Replies

3151 Views

Last post by sirspuddest
Wed Jul 23, 2008 5:28 pm
Shoulder Launched Cannon

Last post by SatansEvilTwin
Replies: 10
by SatansEvilTwin » Tue Jul 22, 2008 10:51 am

First post

Ok, well im gonna try again to add some pics

This cannon uses a grip cut from an airsoft uzi. I drilled a hole through it and stuck in a grill...

Last post

haha thanks man :wink:

10 Replies

4828 Views

Last post by SatansEvilTwin
Tue Jul 22, 2008 7:58 pm
Bowling Ball Howitzer

Last post by MrCrowley
Replies: 18
by Maceronni » Mon Jul 21, 2008 12:22 pm
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hey guys. i was just searching youtube when i came acros this video. i was amazed at this. sorry if it is a repost but here you go have a look.

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Also, why is it that one of MrCrowley's GB guns always shows up in the related videos for pretty much every gun-related video search? :lol:
My tags...
18 Replies

3621 Views

Last post by MrCrowley
Mon Jul 21, 2008 11:40 pm
Some Problems. :(

Last post by psycix
Replies: 9
by Phenom671 » Fri Jul 18, 2008 5:39 pm

First post

Recently I made my first real spud gun. I've been experimenting with medicine bottles before and I really wanted to try this out.

Here's the...

Last post

When the combustion goes whoof instead of bang, you have got way to much fuel.
Try adding about 1/3rd of that amount of fuel.
Also wait long enough...

9 Replies

2368 Views

Last post by psycix
Sun Jul 20, 2008 5:38 am
New Combustion Launcher

Last post by Deadeye
Replies: 4
by Deadeye » Fri Jul 18, 2008 12:23 pm

First post

Gun Name: Hammer-time
Design: Basic Over/Under Advanced combustion with a few mods.
Chamber: 18” of 4” 280 PSI Sch. 40 (Double Sleeved) + 4” 90 &...

Last post

Thanks for the kind eval.

RE:
Spark: - I might have oversold this in the description, which I suspect peeked your interest. In reality it is...

4 Replies

3374 Views

Last post by Deadeye
Sat Jul 19, 2008 1:57 pm
Put the barrel inside the combustion chamber!

Last post by DYI
Replies: 12
by magnum9987 » Fri Jul 18, 2008 12:36 pm

First post

I was thinking about making my guns compact, like a rocket launcher. So i thought Couldnt you put the barrel inside the combustion chamber, to...

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Just remember that a lot of the power in propane combustion lies in the heat it generates (the molar increase isn't very significant, 1:1.2). By...

12 Replies

3014 Views

Last post by DYI
Sat Jul 19, 2008 11:27 am
questions

Last post by psycix
Replies: 2
by BartoGhost » Fri Jul 18, 2008 7:47 am

First post

for first thing I apologize me for the questions, because I would like to read the discussions to learn but since I am Italian and I have some...

Last post

Most of your questions can directly be answered by reading the wiki .

2 Replies

765 Views

Last post by psycix
Fri Jul 18, 2008 1:49 pm
Basic Ignition Setup

Last post by sirspuddest
Replies: 3
by gotbass7 » Fri Jul 18, 2008 1:10 am

First post

on really simple, cheap spudguns, the kind you just make with like 5 bucks and 10 minutes for fun, does anyone have any suggestions on putting on the...

Last post

Lantern lighters can't be beat for cheap spud guns.

3 Replies

1807 Views

Last post by sirspuddest
Fri Jul 18, 2008 11:00 am
Compact Jackass Combustion

Last post by Deadeye
Replies: 15
by frankrede » Sat Apr 14, 2007 10:33 pm
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This cannon was built off a 15$ budget and the only parts I have before hand was the 2 pipe, 3/4 sch-80 and the 1/2 sch 40
and those can all be...

Last post

Nice job for on the cheap.
The ole lantern lighters still work well & can't beat the ease on install.

I like the work bench - Propane torch,...
15 Replies

5641 Views

Last post by Deadeye
Fri Jul 18, 2008 10:26 am
many probs

Last post by iisthemuffin
Replies: 15
by drunkii » Thu Jul 17, 2008 2:50 pm
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hii , im 15years and i like shooting on things with guns:d
sow i want to make a Fking hard spudgun:d
but i have a few problems
okej , i had build a...

Last post

otherways i just could trow my spudgun away,

Thats probably your best option right about now.
15 Replies

4831 Views

Last post by iisthemuffin
Thu Jul 17, 2008 4:26 pm

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