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

953952 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

314555 Views

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

Topics

How to seal spark gap to for high pressure and what to use?

Last post by boyntonstu
Replies: 9
by boyntonstu » Sun Jul 19, 2009 2:09 pm

First post

A few questions:

I am thinking of building a Hydrogen gun.

If the H2/O2 ratio is 3:1 not much of spark is require to cause ignition.

I believe...

Last post

I am sure that you guys are correct.

Thanks,

This would do it nicely with a 1/4 -32 thread:

CHAMPION V-2 SPARK PLUG FOR MODEL CAR, BOAT,...

9 Replies

3890 Views

Last post by boyntonstu
Sun Jul 19, 2009 5:11 pm
need tips on perfecting cannon and ignition system(pictures)

Last post by jimmy101
Replies: 20
by johnrodgers » Sat Jul 18, 2009 9:55 pm
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my buddy and i just slapped this cannon together today out of abs. we glued on the parts on using the abs glue, but i am not sure how short the...

Last post

jimmy, these pressures are from metered propane and just praying propane right? because hairspray is just not that good
Nope, hair spray will behave...
20 Replies

8256 Views

Last post by jimmy101
Sun Jul 19, 2009 4:52 pm
biggest combustion ever?

Last post by jimmy101
Replies: 12
by jackssmirkingrevenge » Thu Jul 16, 2009 9:57 am

First post

Thank you, Darwin :roll: :D

Last post

I wonder if a 2'D beach ball filled with stoichiometric propane + air would even do much to a typical sized shed. You would only get a PSI or so of...

12 Replies

3272 Views

Last post by jimmy101
Sun Jul 19, 2009 3:28 pm
Sealing Bolt Holes In Combustion Chamber?

Last post by psycix
Replies: 5
by spudkilla224 » Sun Jul 19, 2009 9:56 am

First post

Hello everyone, I have an advanced combustion cannon that i'm building and i was going to do just machine thread bolts for the ignitor tips. And i...

Last post

Are the holes threaded? Then ofcourse use bolts to seal it off.
Also you could look into finding another use for the holes, like boring them out,...

5 Replies

1958 Views

Last post by psycix
Sun Jul 19, 2009 1:01 pm
HHO Gun possibility?

Last post by inonickname
Replies: 97
by boyntonstu » Sun Jun 28, 2009 7:38 pm
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and:

BoyntonStu

Last post

AFAIK, the only (sustained) nuclear fusion reactor we have is the sun...and that's still dangerous to be exposed to several light-minutes away :?...
97 Replies

31296 Views

Last post by inonickname
Sat Jul 18, 2009 9:06 pm
chamber fan question

Last post by colty-bear
Replies: 10
by colty-bear » Wed Jul 15, 2009 8:15 pm

First post

i am putting in a chamber fan and making a powerbox if i use 5 9 volt batteries how long will it run the fan?
it that too many?
please reply

Last post

sorry too late :( i just got a 70mm 2 lead fan yesterday

10 Replies

2956 Views

Last post by colty-bear
Fri Jul 17, 2009 7:45 pm
Bue Flame 3

Last post by mark.f
Replies: 1
by Moonbogg » Fri Jul 17, 2009 12:51 pm

First post

Hey, I saw the blue flame and think its pretty cool. I was wondering if anyone knows anyone who has bought one and what they think of it.

Last post

The Blue Flame is as old as my involvement in spudgunning.

The maker is one OCD fothermucker, if that tells you anything.

1 Replies

1423 Views

Last post by mark.f
Fri Jul 17, 2009 1:17 pm
el perkele by tiniboule (french)

Last post by nad3r
Replies: 20
by tiniboule » Thu May 22, 2008 1:03 pm
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Hi everyone, let me introduce you to my stainless steel combustion spudgun made in France :)

Name of the spudgun:
El perkele
(means the devil in...

Last post

Just thought I would pos the link to his original thread on patator.frbb.net so the people who havent seen it yet can.
20 Replies

12115 Views

Last post by nad3r
Thu Jul 16, 2009 1:45 pm
Spudzilla Pro BMF9000 - new video

Last post by LCTChamp
Replies: 4
by Budarooski » Sat Jul 11, 2009 7:54 pm

First post

I just created this video a few minutes ago.

This BMF is frickin' LOUD!!

I can't wait to test a potato where there's no leakage around the ammo...

Last post

The gun looks great! I can't wait to see some damage pics.

4 Replies

2804 Views

Last post by LCTChamp
Wed Jul 15, 2009 3:43 pm
5'' wide by 30'' high cannon to strong for 44mm ID barrel

Last post by |daevic|
Replies: 4
by |daevic| » Tue Jul 14, 2009 9:45 am

First post

Hi

What diameter barrel would be good with my 9 liter chamber?
When i shoot with 44mm ID barrel my lid explodes into 1000 pieces.

greets

Last post

I live in Europa yes. I think we dont have PVC strong enough for spudguns.

4 Replies

1443 Views

Last post by |daevic|
Tue Jul 14, 2009 4:14 pm
fuel mixture or spark gap?

Last post by ramses
Replies: 6
by VDHGC21 » Thu Jul 09, 2009 5:50 pm

First post

just finished up making a basic launcher and i've only launched about 4 spuds so far. i'm using a replacement grill igniter and hairspray for...

Last post

I have used propane in a spray and pray launcher. Just open the cap, stick in an unlit propane torch, and wait a few seconds. the aspirator in the...

6 Replies

3666 Views

Last post by ramses
Tue Jul 14, 2009 9:15 am
A different kind of pengun

Last post by Brian the brain
Replies: 11
by mikemurph » Sat Jul 11, 2009 4:18 pm

First post

MOAR PENGUNS!?
This is just a little combustion pengun i built. its not perfect, but its a fun little plinker to play with. it fires little beads, or...

Last post

I think:

1: great job on getting a combustion this small working

2: I could beat that thing with a small section of 3/4 tube and a balloon...
In 2...

11 Replies

5204 Views

Last post by Brian the brain
Mon Jul 13, 2009 1:38 pm
Spudzilla Pro BMF9000

Last post by Ragnarok
Replies: 19
by Budarooski » Mon Jul 06, 2009 12:05 pm
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I just finished this it this past weekend. Works great, now to try MAPP gas!

It has two fans; the small one on the outside draws in fresh air, the...

Last post

Wiki says MAPP requires 4.98% Displasive Volume Percent, but then on the next page it says 4.6%, so I'm not sure what to believe. Then again,...
19 Replies

8819 Views

Last post by Ragnarok
Sun Jul 12, 2009 10:27 am
Holy CRAP o.=.o.....and IDEA!! Automatic combustion.

Last post by THUNDERLORD
Replies: 15
by dragon finder » Sun Jul 05, 2009 8:39 pm
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Wow it's been a while sence I've been here o.=.O......if ANY of you remeber me XD hahaha.

Any who. I've had this idea on my mind for many years when...

Last post

First post.
I joined to discuss ideas I have for an automatic propane cannon.

this is very similar to what thunderlord was saying...
Welcome to...
15 Replies

7846 Views

Last post by THUNDERLORD
Fri Jul 10, 2009 11:27 pm
Saftey question

Last post by jimmy101
Replies: 18
by Zagi » Fri Jul 03, 2009 2:57 am
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First post

Hey guys,

I just finished building my second spud gun today (has not been fired), but am having some doubts how safe it actually is. After some...

Last post

May want to check the specification for Schedule 40. Often non schedule 40 parts get lumped in where they don't belong. White PVC doesn't make it...
18 Replies

6202 Views

Last post by jimmy101
Fri Jul 10, 2009 12:28 pm
"HHO" rocket

Last post by boyntonstu
Replies: 2
by boyntonstu » Fri Jul 10, 2009 8:37 am

First post

I wonder what that volume of HHO gas would do pushing a projectile.

I can produce a liter in about 30 seconds.

BoyntonStu

Last post

It might be a fair idea to not use the term HHO, and just say hydrogen and oxygen. HHO will undoubtedly generate another auto scam debate.

As for...

2 Replies

1257 Views

Last post by boyntonstu
Fri Jul 10, 2009 9:04 am
golf ball cannon

Last post by Gaderelguitarist
Replies: 27
by FORE!!!! » Tue Jul 07, 2009 4:04 am
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hey just haveing a stab at making my own cannon,,,she works good shoots about 150-200m ,i havent measured ,its only an estimate ( cant see beyound...

Last post

Very nice!!

In honored to have my rough ideas used so well :)
27 Replies

9552 Views

Last post by Gaderelguitarist
Thu Jul 09, 2009 7:33 pm
has anyone tried barrel porting

Last post by Hubb
Replies: 6
by feathers » Wed Jul 08, 2009 2:22 am

First post

has anyone ever tried drilling porting in their barriel or will it shred the potato

Last post

I wrote a book about 'em (along with other barrel stuff). It's in my sig.

6 Replies

2381 Views

Last post by Hubb
Wed Jul 08, 2009 7:11 am
MAPP gas question

Last post by Technician1002
Replies: 18
by Budarooski » Mon Jul 06, 2009 12:16 pm
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I just finished my propane canon and it requires 75psi in the meter for the correct 4.03% mixture.

If I use MAPP gas, what is the correct % mix I...

Last post

. Pressure gauges are another source of measurement error.

Are you referring to them when they are inaccurate? Or perhaps when one might be hard...
18 Replies

5427 Views

Last post by Technician1002
Tue Jul 07, 2009 8:12 am
How do you mount the hose to the propane bottle

Last post by Technician1002
Replies: 5
by Budarooski » Mon Jul 06, 2009 12:31 pm

First post

I can't believe what I had to go through to get my hose mounted to the bottle. After trips to all the local hardware stores, I ended up buying a 7/16...

Last post

For high volume applications, I hit a propane heat supply house. They have high pressure propane hose (left hand fittings) POL (non flow restricted)...

5 Replies

2272 Views

Last post by Technician1002
Mon Jul 06, 2009 8:08 pm
My first, simple yet effective, potato cannon.

Last post by Moonbogg
Replies: 5
by Scourch » Wed Jul 01, 2009 4:24 pm

First post

Hey everyone. First, I'd like to thank the kind folks who had answered some questions for me a little while back.

That being said, I have for you...

Last post

Looks good. I think you may be able to modify your cannon to take metered propane and a fan...maybe even a spark strip. The power increase is...

5 Replies

3826 Views

Last post by Moonbogg
Sun Jul 05, 2009 8:46 pm
Source for unregulated propane fitting

Last post by Technician1002
Replies: 27
by D_Hall » Wed Jun 17, 2009 6:21 pm
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Need to connect to a standard propane tank. The type you see on BBQ grills. What are they, 5 gallons? In any event, I do NOT want a regulator....

Last post

This new tank was pressurized with air (weird)
Not weird at all. 'Tis a bad idea to leave a pressure vessel unpressurized. You always want at least...
27 Replies

9063 Views

Last post by Technician1002
Sat Jul 04, 2009 2:39 pm
made a new handle

Last post by metallover
Replies: 2
by metallover » Sat Jul 04, 2009 12:02 pm

2 Replies

1410 Views

Last post by metallover
Sat Jul 04, 2009 1:27 pm
30kV ignitor from Ultimatespudgun.com

Last post by chenslee
Replies: 2
by chenslee » Wed Jun 24, 2009 4:13 pm

First post

I ordered the igniter on Friday and I received it on MONDAY. I didn't know they had built a tunnel from Hawaii to Houston Texas because that is the...

Last post

I'll try to get some pics up, but right now it's taped to one end of a stick, with a button on the other end. I'm using it as a kitten prod for my...

2 Replies

3010 Views

Last post by chenslee
Tue Jun 30, 2009 11:38 am
Ignition height

Last post by Scourch
Replies: 5
by Scourch » Mon Jun 29, 2009 6:59 pm

First post

How much of a difference would it make if my spark was higher in the combustion chamber then lower? If any at all.

One side of me is saying that the...

Last post

What I mean is, basically imagine a 2 foot long ABS pipe. Now I have two screws drilled into the pipe at an angle so that they come in to just barely...

5 Replies

1850 Views

Last post by Scourch
Tue Jun 30, 2009 9:43 am

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