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

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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...

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great job how can i help the fourms
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Last post by quinn whitsitt
Fri Mar 01, 2024 10:52 am

Topics

Advanced combustion cannon

Last post by Gaderelguitarist
Replies: 12
by niglch » Fri Mar 12, 2010 5:19 pm

First post

I made this under-over advanced combustion cannon with a friend last summer. It performs very well with an HGDT estimated muzzle velocity of over 500...

Last post

It's diameter. You can expect thgat it'll be slightly larger as PVC pipes have the pipe size and then the average size .

The average ID of 1.5 PVC...

12 Replies

8481 Views

Last post by Gaderelguitarist
Sun May 02, 2010 10:07 am
Reducing Charging Time of Camera Flash Circuits

Last post by mark.f
Replies: 32
by mark.f » Thu Apr 22, 2010 6:06 am
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...the easy way!

I was sitting around thinking about how to use a camera flash to produce sparks as fast as you could pull the trigger, and came up...

Last post

*Phew*

That took quite a while.

I wound up making two circuits. Not because I thought two circuits would be nice, but because I fried the first one...
32 Replies

12601 Views

Last post by mark.f
Sat May 01, 2010 12:22 am
What's the smallest diameter propane bottle ?

Last post by clemsonguy1125
Replies: 2
by tatfree » Fri Apr 30, 2010 7:46 pm

First post

Looking for something that's smaller diameter than those little bottles from home depot that are around $3 each.

Is there such a beast ?

Looking...

Last post

This is the smallest propane cylinder Ive seen

2 Replies

1665 Views

Last post by clemsonguy1125
Fri Apr 30, 2010 8:18 pm
Softball Cannon with interchangeable barrels.

Last post by xpitxbullx
Replies: 38
by xpitxbullx » Thu Jun 05, 2008 2:45 pm
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First post

This is my first multi-barreled cannon and also my first propane setup. All ABS to PVC parts were glued with ABS to PVC transition cement and nuts...

Last post

I just received it today and it says SDR-21 on the side!!! PERFECT!!! Too late to go to the store and get the 2 SCH-80 PVC. Damn! I have to wait...
38 Replies

18300 Views

Last post by xpitxbullx
Wed Apr 28, 2010 9:05 pm
Second Effort

Last post by MikeNice
Replies: 10
by t_cat50 » Sun Apr 04, 2010 2:35 pm

First post

Still Spraying into the back of the chamber, although after running out of Static Guard this weekend, I raided my Father in Law's Laundry Room and...

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Do we seriously need to have the EVER on going PVC vs. ABS debate? Really? It's on 37 zillion threads here. Can we either agree to disagree or just...

10 Replies

6861 Views

Last post by MikeNice
Wed Apr 28, 2010 3:04 pm
Compact Ignition System?

Last post by Gaderelguitarist
Replies: 26
by Gaderelguitarist » Tue Apr 20, 2010 2:18 pm
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First post

I've been wrestling with a cannon in progress for about a week now, simply trying to get the ignition set up to spark effectively.

Essentially the...

Last post

Well, seeing as it's 30kv, it can jump about 1.2 in good conditions. Spark gap: 0.10 to 0.375”
Might be less than 30kV actual output.

I think...
26 Replies

6158 Views

Last post by Gaderelguitarist
Tue Apr 27, 2010 10:48 pm
New project I just finished..... ( Video ) included

Last post by clemsonguy1125
Replies: 11
by tatfree » Sun Apr 25, 2010 12:41 am

First post

Here is a little 2.20 minute video I put together .

I had not built anything related for the past 15 yrs, but as soon as I found out about the Cam...

Last post

Very clean,great job

11 Replies

3823 Views

Last post by clemsonguy1125
Sun Apr 25, 2010 12:27 pm
Propane Bottle

Last post by i-will
Replies: 10
by voodooguns » Thu Apr 22, 2010 8:27 pm

First post

Hi I'm not new to this hobby just looking for a better way to mount my propane bottle to a 4 chamber. Tired of sliding it into a pvc pipe. Anyone...

Last post

hose clamps are my favorite.

10 Replies

4515 Views

Last post by i-will
Sun Apr 25, 2010 1:20 am
Propane

Last post by Mr.Sandman
Replies: 3
by maxa1 » Sat Apr 24, 2010 7:21 pm

First post

so today i was think could i hook up one of my old large cannons to a large thing of propane like on you would use for a gas grill would you think it...

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Umm Why would it not work? I wasn't aware that there was more than one type of propane :lol: Make sure you meter it correctly and dont leave the hose...

3 Replies

2183 Views

Last post by Mr.Sandman
Sat Apr 24, 2010 8:16 pm
Will a RC car glow plug ignite propane?

Last post by Technician1002
Replies: 9
by jhalek90 » Sat Apr 24, 2010 12:49 pm

First post

My first question is will a RC glow plug ignite a propane filled chamber?

The chamber is 1'' PVC.

Second question: The PVC will stand up to a...

Last post

Those hot surface ignitors are Silicon Nitride. They resemble glass and are reasonably fragile. Treat them like fine china. They don't bend. They...

9 Replies

7659 Views

Last post by Technician1002
Sat Apr 24, 2010 4:52 pm
Ghetto Combustion Sniper

Last post by chinnerz
Replies: 5
by freder » Tue Oct 14, 2008 9:11 am

First post

This is my new ghetto 6mm sniper!

It´s not finished yet but it works :lol: I just wanted to show it and ask what you think about it and what I...

Last post

wow this was posted in 2008

5 Replies

5049 Views

Last post by chinnerz
Sat Apr 24, 2010 8:11 am
JPS 200 Titan "Black Wolf"

Last post by Junipat
Replies: 12
by Junipat » Fri Mar 26, 2010 9:38 am

First post

Hello! I know well your forum, I appreciate the quality of your realizations.

I come from the French forum to patator :

Sorry I use REVERSO...

Last post

Thank you!

For the weight, I am not sure exactly, but he has to be 18 kg.

I have no image of damage, I would make it can be later.

12 Replies

7720 Views

Last post by Junipat
Thu Apr 22, 2010 7:54 am
Gluing Back Together CPVC?

Last post by mikespahn
Replies: 9
by rcman50166 » Mon Apr 12, 2010 11:12 pm

First post

So I found some clear PVC in my university's machine shop and then I saw another and thought, If they were only longer I could make a combustion...

Last post

I want to keep a clean look, a brace would be sloppy looking.

Perhaps. But remember it doesn't have to look sloppy. Build up a thickness of plywood...

9 Replies

3221 Views

Last post by mikespahn
Wed Apr 21, 2010 9:26 am
Male Endcap instead of a female one?

Last post by mikespahn
Replies: 11
by VirusX » Mon Mar 08, 2010 12:47 pm

First post

Hey,

In the Combustion showcase, everyone uses female endcaps on their chamber, but here in Germany are only 2 female endcaps available. My chamber...

Last post

as far as i know, cleanout caps are not pressure rated. a male end adapter and female cap (threads on the outside of the chamber and inside of end...

11 Replies

6290 Views

Last post by mikespahn
Sun Apr 18, 2010 11:41 am
In Progress...

Last post by Hubb
Replies: 12
by Hubb » Thu Apr 15, 2010 6:33 pm

First post

Okay. For the past year, I've been building a combustion launcher. I figured I would start this topic to display what I've done with it so far in...

Last post

I'm almost finished with the breech and barrel support section of the launcher. I wasn't able to cut the chamber at an angle, mainly because my miter...

12 Replies

4426 Views

Last post by Hubb
Sun Apr 18, 2010 11:34 am
Football cannon in 15 mins

Last post by deathbyDWV
Replies: 2
by Duct Tape » Sun Apr 18, 2010 8:28 am

First post

I posted this in materials section, so apologies if you've already seen it, but here is a cannon made from cans and duct tape. A simple design that...

Last post

I made one of these before when I was super bored... Mine only shot 50 feet. Good job!!!

2 Replies

2170 Views

Last post by deathbyDWV
Sun Apr 18, 2010 9:16 am
R/C mobile hydrogen spud cannon

Last post by ramses
Replies: 14
by boyntonstu » Wed Apr 14, 2010 6:38 am

First post

He uses it to chase birds away from airports

Last post

I'm surprised no one has suggested putting a fan in it or pointed out the dangers of dihydrogenmonoxide inhalation.

Nice setup.

yes. those...

14 Replies

4832 Views

Last post by ramses
Fri Apr 16, 2010 4:22 pm
Automatic Potato Cannon

Last post by Davidvaini
Replies: 20
by TheAPCTube » Sun Apr 04, 2010 4:40 pm
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First post

Hi, me and my friends built a automatic golf ball shooting cannon controlled by a computer.
You can find videos, images and information here:...

Last post

nice... 211 joules assuming you are using the The United States Golf Association regulation weight golf ball...
20 Replies

10524 Views

Last post by Davidvaini
Thu Apr 15, 2010 8:16 pm
dry firing?

Last post by Gun Freak
Replies: 9
by mikespahn » Mon Apr 12, 2010 9:41 pm

First post

can it harm a pvc combustion if you fire it with no projectile?

Last post

Yeah, that's about what it might look like (if it's night, and you squint your eyes, and turn slightly to the left...)

While looking through a...

9 Replies

4625 Views

Last post by Gun Freak
Tue Apr 13, 2010 3:58 pm
Llamas with Hats

Last post by psycix
Replies: 4
by DR » Mon Apr 12, 2010 4:17 pm

First post

Sitting in the garage, wondering why Llamas with Hats is so damn funny, I had an epiphany:
If a pulsejet's cycling draws in fresh air to ingnite the...

Last post

Holes in an endcap, rubber flap on the inside that can open, but also seal depending on the pressure differential.

However, I don't think that the...

4 Replies

3005 Views

Last post by psycix
Tue Apr 13, 2010 8:09 am
Acetylene as a Propellant? (Safe/Not?)

Last post by Technician1002
Replies: 8
by Dr meat201 » Sat Apr 10, 2010 9:24 pm

First post

Has anyone looked into Acetylene as a fuel source? I'm thinking that it would probably be dangerous, but it can be made relatively easily (If you...

Last post

Asides from that, it must be kept at very low pressure- taking it up to even 20 psi is very unsafe.

This is the reason that regulator settings are...

8 Replies

5962 Views

Last post by Technician1002
Sun Apr 11, 2010 11:37 pm
Electrical Question: "Voltage Tap"

Last post by mark.f
Replies: 6
by mark.f » Sun Apr 11, 2010 11:06 am

First post

Do you think the below method would work for supplying 1.5 volts to an electronic igniter using a 12v battery pack? It'd be kind of hard to determine...

Last post

Whoah, I guess I need to explain. :)

The upper left portion of my diagram is exactly what jimmy101 posted. The circle with the BBQ in it is an...

6 Replies

2966 Views

Last post by mark.f
Sun Apr 11, 2010 8:53 pm
Small disposable propane tanks?

Last post by mark.f
Replies: 7
by kjjohn » Sun Apr 11, 2010 6:27 pm

First post

Does anyone know where to get those really small propane tanks? I remember seeing one on a cannon on this site a few months back, but 12 pages of...

Last post

I would see if I could find a 3/8 -24tpi tap, and then drill and tap a 1/4 or 3/8 pipe cap. That way you could go to the regulator with a nipple and...

7 Replies

2818 Views

Last post by mark.f
Sun Apr 11, 2010 8:48 pm
propane regulator

Last post by Technician1002
Replies: 7
by bighead33 » Sun Apr 04, 2010 6:40 pm

First post

wear do i find those propane regulators for my advanced combustion? you know so i can hook a propane tank and refill my blowtorch

Last post

flip the big tank upside down before you attempt to fill.

yes, that is rather unsafe...

Some of the newer OPD valves prevent this. They won't...

7 Replies

2341 Views

Last post by Technician1002
Wed Apr 07, 2010 12:47 am
beginer wiring questions

Last post by Technician1002
Replies: 8
by mikespahn » Mon Apr 05, 2010 7:54 pm

First post

will wiring 2 9 volt batteries in series be too much for a 12 volt fan? do i need resistors before the fan? how many?

same question goes for the...

Last post

To use the math for the above fan example we will convert mA into amps by moving the decimal point over 3 places. 120 mA is 0.12 Amps.

The items in...

8 Replies

4195 Views

Last post by Technician1002
Tue Apr 06, 2010 11:52 pm

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