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

640087 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

214798 Views

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

Topics

Propane Questions

Last post by STHORNE
Replies: 28
by Ecstasy » Mon Mar 24, 2008 5:12 pm
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First post

Hey everyone. Last summer I made a horribly disproportional combustion gun that I just used Axe in (got it to fire off unmetered propane once.. what...

Last post

no steel wool required, the ignition coil should create enough electricity to produce a hefty spark. if you use a car ignition coil, you could...
28 Replies

6507 Views

Last post by STHORNE
Thu Mar 27, 2008 4:03 pm
Part Ghetto First Combustion 75mm Mortar

Last post by MaxuS the 2nd
Replies: 11
by MaxuS the 2nd » Thu Mar 27, 2008 9:51 am

First post

Well this is my very first combustion in all my experience with Spudguns, it took a bit over an hour to complete and just seems quite ghetto with all...

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It is rated for 10 bar (147.5psi). I'm doubtful it will fracture under such low pressures.

11 Replies

2139 Views

Last post by MaxuS the 2nd
Thu Mar 27, 2008 3:21 pm
Flyback manufac/vendors?

Last post by lockmanslammin
Replies: 6
by Unbreakable » Wed Mar 26, 2008 2:08 pm

First post

Hey all, I'm looking to begin work on a flyback ignition circuit for my launcher for a physics project. The only problem I've run into so far is...

Last post

why not get a cheap stun gun off e-bay or the like, I think I spent like 8 bucks for mine a year or two ago. then you could pull the guts out and...

6 Replies

1852 Views

Last post by lockmanslammin
Wed Mar 26, 2008 10:00 pm
What do you think of....

Last post by jimmy101
Replies: 7
by scottcrete » Sat Mar 22, 2008 4:08 am

First post

I was also considering building a basic combustion gun with a

1. 1 foot clear pvc sch 80 combustion chamber (price is 24.65)

2. Standard sch80...

Last post

what would you do with the wiring?.. the only reason i was using the outer barrel.. the 123.00 is so the wiring does not snag.. and rip off.. ect.....

7 Replies

1960 Views

Last post by jimmy101
Tue Mar 25, 2008 3:19 pm
WOOPS...I just made way to much noise

Last post by SpudUke5
Replies: 5
by lockmanslammin » Mon Mar 24, 2008 11:41 pm

First post

Hey there combustion cannon folks. I have been lurking around here, mostly in the pneumatic cannon discussion area for a couple months now as I have...

Last post

As a mate once told me, it aint the color, it's the size of the tree
Camo, Black, White or yellow
We are, don't deny the same good fellow
Yellow will...

5 Replies

3501 Views

Last post by SpudUke5
Tue Mar 25, 2008 12:07 pm
Best Aerosol FUEL

Last post by Jared Haehnel
Replies: 15
by scottcrete » Sat Mar 22, 2008 2:20 am
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use this stuff guys.. got it from the ol lady.. it drys instantly and is made of mostly propane.. cost 2.00 a can at sallys beauty supply.. and is...

Last post

I'm partial to starting fluid my self. I don't know if it has any advantage's over propane or not. With my lucks it is probably less effective...but...
15 Replies

5743 Views

Last post by Jared Haehnel
Tue Mar 25, 2008 10:53 am
Fuels

Last post by Jared Haehnel
Replies: 5
by Jared Haehnel » Mon Mar 24, 2008 1:28 pm

First post

Ok we all know that different fuels give a better or worse performance in the spud gun. But how much does it effect the performance? Does a advance...

Last post

Ok that helps a lot... I'm not the poor guy by the way I'm just trying to help out the new guys...

There a lot of improvements one can make to...

5 Replies

2001 Views

Last post by Jared Haehnel
Tue Mar 25, 2008 6:11 am
Calculating ratios

Last post by mark.f
Replies: 7
by ROCK SOLID » Sat Mar 22, 2008 8:56 pm

First post

Since i dont know much about combustion cannons, i was asking for good methods of measuring ratios i was looking at Wiki and i wanted to know

how...

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Sometimes diameter is prettier than radius, (i.e. dividing 1.625 by two adds another decimal figure). I wasn't trying to be sarcastic, I just said...

7 Replies

3392 Views

Last post by mark.f
Mon Mar 24, 2008 10:41 pm
First Cannon

Last post by moze304
Replies: 5
by moze304 » Sat Mar 22, 2008 10:50 am

First post

well, here it goes......After a week of studying this website and the burnt latke website, and my fiance tellin me i'm childish...this is what i came...

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also i forgot....if ur wondering how i got the shrader valve in there..it was a little tricky because plastick was too thick to get it to sit...

5 Replies

2426 Views

Last post by moze304
Mon Mar 24, 2008 4:59 pm
Free Camera's From Target

Last post by Hotwired
Replies: 25
by scottcrete » Sat Mar 22, 2008 7:15 pm
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Look what i got at target just now.. just for free...

I said can i have those disposable cameras you have back there.. and they said why.. i said .....

Last post

I may now be too old to pull the school project trick

I'm older than you and electronics project still flies without question :P

I don't say...
25 Replies

6484 Views

Last post by Hotwired
Sun Mar 23, 2008 5:14 pm
transformer

Last post by D_Hall
Replies: 6
by jon_89 » Sun Mar 23, 2008 12:43 am

First post

i was reading on how to make a transformer. could this be used for ignition?

Last post

argg, can't you just buy a stungun and save a ton of trouble? :)
Depends on what you're trying to do. Stun guns don't lend themselves to every...

6 Replies

2056 Views

Last post by D_Hall
Sun Mar 23, 2008 1:41 pm
Wiring an Illuminated Rocker Switch For Stungun

Last post by psycix
Replies: 1
by hanks » Sun Mar 23, 2008 1:59 am

First post

Hello Everyone,

I found this website about a month ago and since have been inspired to build my very own advanced combustion cannon similar to a lot...

Last post

Just try it out!
One will be ground, the other probably for the light and the third will be the actual switch line.
Just test it :)

Do you know the...

1 Replies

719 Views

Last post by psycix
Sun Mar 23, 2008 6:51 am
TB recovery

Last post by ROCK SOLID
Replies: 9
by ROCK SOLID » Sat Mar 22, 2008 1:46 am

First post

Last night i was shooting some TBs at my house, and i got really anoyed when you cant see where the TB went or where it landed well i made a simple...

Last post

LOL :lol: :lol:

9 Replies

3218 Views

Last post by ROCK SOLID
Sat Mar 22, 2008 5:11 pm
Hail Cannon

Last post by jimmy101
Replies: 4
by BlueRose » Sat Mar 22, 2008 12:56 am

First post

Check out these links about Hail Cannon they stop the formation of hailstone from falling from the sky.

Patrick.

Last post

BlueRose

Welcome to the forum. As you may have noticed we can be a cranky bunch.

Nothing wrong with your first post. And it actually makes sense,...

4 Replies

2075 Views

Last post by jimmy101
Sat Mar 22, 2008 11:25 am
AutoSpud

Last post by ROCK SOLID
Replies: 40
by PCGUY » Sat Feb 12, 2005 10:41 pm
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First post

AUTOSPUD

Provided By - Timmay

Last post

Have you tested it yet admin . Thats one of the best combustion cannon ive seen since it has two combustion cambers what the fuel ratio any way and...
40 Replies

31345 Views

Last post by ROCK SOLID
Sat Mar 22, 2008 1:38 am
Ignition placement

Last post by jimmy101
Replies: 13
by Arcticpheonix » Thu Mar 13, 2008 10:24 pm

First post

I tried searching for this, but I couldn't find anything. My question is, where in the chamber should the ignition source be? I'm thinking as far...

Last post

Wouldnt weaken the chamber anymore than usual. Just use a Spark Strip with X number of gaps. Say, if you had a 100mm chamber diameter and you were...

13 Replies

4811 Views

Last post by jimmy101
Fri Mar 21, 2008 2:31 pm
Piston won't seal.

Last post by JET47
Replies: 26
by JET47 » Tue Mar 18, 2008 9:38 pm
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First post

Hey guys, I found this site a couple weeks ago and it's really been helping me out, but i can't figure out why my piston (third cannon, first pison...

Last post

K thx for the help, I've gotta go stateside for a couple days but ima keep working on it when I get back, gunna see if I can find a QEV up there. Is...
26 Replies

6043 Views

Last post by JET47
Thu Mar 20, 2008 3:15 pm
8ft spud gun

Last post by MaxuS the 2nd
Replies: 18
by nick753159 » Sun Feb 24, 2008 12:48 am
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hey im working on my second potato cannon, first one was a basic combustion one, but it broke :(
now im trying to build number 2, same basic...

Last post

Not really, the volume isn't going to increase/decrease with the strength of the material.

Don't worry about ratios too much if all you want is a...
18 Replies

4874 Views

Last post by MaxuS the 2nd
Thu Mar 20, 2008 3:07 am
Bazooka

Last post by LosBuenos
Replies: 18
by Spyider » Mon Nov 06, 2006 11:27 pm
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First post

ok this is my bazooka that i made for a friend lol. he wanted a spud gun and wanted somthing diffrent that most guns that are well guns lol. so i...

Last post

i pm-ed him and i learned that it was simply held in by friction, if i remember right though there might hve been some bolts in the cleanout cap part
18 Replies

9240 Views

Last post by LosBuenos
Wed Mar 19, 2008 5:08 pm
Question about meter calculators

Last post by spudman029
Replies: 4
by spudman029 » Wed Mar 19, 2008 1:47 pm

First post

Hey all. I used to be a regular member of the spudtech forums. After being out of the hobby for a while, I've decided to rebuild my old propane...

Last post

Ah. There they are. Ratcalc and Fueltool from Burnt Latke. Thanks.

4 Replies

1465 Views

Last post by spudman029
Wed Mar 19, 2008 3:30 pm
Hydrogen + oxygen. Is it possible.

Last post by TurboSuper
Replies: 25
by bobrofilin » Sat Mar 15, 2008 1:03 pm
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Sorry, i'm a noob here, and most suitable fuel for me is hydrogen + oxygen. Is it possible? Or gun would be blown up? I can't get propane or right...

Last post

I think the argument is that he doesn't want to have to worry about running out of fuel.

Don't worry, one propane tank will last you many, many...
25 Replies

6198 Views

Last post by TurboSuper
Tue Mar 18, 2008 9:43 pm
good spud gun propellent

Last post by STHORNE
Replies: 5
by TWITCHY417400 » Sat Mar 15, 2008 6:26 pm

First post

hey i just joined im going to post my gun soon but my spray of choice is GUMOUT carb+choke cleaner I sent a idaho potato up so high that it was...

Last post

To tell you the truth, guys and gals, I like using zippo fuel in a spray bottle, a spray bottle for glasses cleaner more specifically. They're...

5 Replies

2450 Views

Last post by STHORNE
Sat Mar 15, 2008 9:22 pm
automated propane mortar problems

Last post by jimmy101
Replies: 4
by singularity » Fri Mar 14, 2008 5:05 pm

First post

after several months of laying low the project can finally be tinkered with again. it was put into hiding before i was able to test it successfully...

Last post

Singularity

We need a bit more info ...

Does it spark if you remove the end cap and disconnect the fuel source?

Chamber fan?

Did you burp the...

4 Replies

1866 Views

Last post by jimmy101
Sat Mar 15, 2008 11:00 am
My first effort

Last post by Cosmic Muffin
Replies: 6
by Shango » Sat Mar 08, 2008 10:57 am

First post

Here is my first effort. I left the barrel length at 8 ft as that's the length it came in, and stuck with the in-line for my first build

The guy at...

Last post

yer i just read that,sorry

6 Replies

3016 Views

Last post by Cosmic Muffin
Fri Mar 14, 2008 8:20 pm
Using pure 0xygen as a propellant, the perils thereof.

Last post by jackssmirkingrevenge
Replies: 31
by Shango » Mon Mar 10, 2008 6:37 am
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I read in a posting on this site that someone was looking at using pure oxygen as a propellant. Has anyone researched/discussed the dangers of...

Last post

Someone HAS to photoshop this pic...

How exactly, I'm lost :oops:
31 Replies

9625 Views

Last post by jackssmirkingrevenge
Fri Mar 14, 2008 6:37 am

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