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

1315570 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

406060 Views

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

Topics

Hybrid fuel mixing and cold weather

Last post by PeteS
Replies: 2
by PeteS » Sun Dec 08, 2013 11:38 am

First post

Ignition seemed a little flaky in my tests this morning. It was a moderately cold 28 F. It always fired but sometimes took a few button pushes over a...

Last post

That makes sense. I bet the mix was a bit on the rich side. Thanks.

2 Replies

1914 Views

Last post by PeteS
Sun Dec 08, 2013 1:13 pm
Fuel choise

Last post by jackssmirkingrevenge
Replies: 4
by GeoNet » Sun Dec 01, 2013 7:44 am

First post

Hello guys! Im new to spudfiles but not new to spudguns. And right now im making my second one! Just few days back I ordered bbq ignitor from ebay...

Last post

And one more question. Has someone made any dosage system to lighter refillers? My budget isnt that big that I could buy real propane tank and...

4 Replies

3536 Views

Last post by jackssmirkingrevenge
Mon Dec 02, 2013 6:25 am
Tank Pressure

Last post by Biopyro
Replies: 4
by bravootome » Thu Nov 28, 2013 12:45 pm

First post

do you happen to know what pressures does that gas tank hangs on ? i used one of this as an air chamber for an airgun, and i am not so sure it is as...

Last post

Rated to 15, apparently burst around 18.

4 Replies

4486 Views

Last post by Biopyro
Sat Nov 30, 2013 1:44 pm
First Cannon In A Few Years

Last post by rna_duelers
Replies: 5
by rna_duelers » Thu Nov 28, 2013 11:16 am

First post

Pretty much self explanatory, but it's been to long since I've been fired a spud gun so I did something about it.On a supply run I went to a Hardware...

Last post

Very informative.Thats going to be used well,thanks JSR

5 Replies

6832 Views

Last post by rna_duelers
Sat Nov 30, 2013 6:30 am
Converting torch head to threaded fitting

Last post by Ragnarok
Replies: 16
by Biopyro » Tue Nov 26, 2013 1:04 pm
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First post

Torch head.JPG

So I have this blowtorch head which allows me to get gas from my MAP-Pro cannister. It's great but as you can see below it's not...

Last post

Eh.... 0.7mm at the base of a thread (basically, the start of a crack, with a fitting putting force on it)? Not brilliant in my book.

My call would...
16 Replies

10769 Views

Last post by Ragnarok
Thu Nov 28, 2013 11:30 am
Howitzer Aiming

Last post by jackssmirkingrevenge
Replies: 5
by djsnowman06 » Sat Nov 23, 2013 6:53 pm

First post

planning a large coaxial combustion type . first I don't know if combustion and coaxial will work as I cant find much about them. second I'm planning...

Last post

Will ABS hold? About the only thing I can get my hands on. That or sewer grade pvc

Better ABS than PVC in this case.

5 Replies

5528 Views

Last post by jackssmirkingrevenge
Tue Nov 26, 2013 9:47 am
New project: Material Strenght, Safety, and other questions

Last post by djsnowman06
Replies: 13
by Walter103 » Wed Jun 19, 2013 1:50 pm

First post

Hi there,

I have build one potato cannon before, but I have a few questions before I begin building a second. The first cannon I build was...

Last post

yea running hgdt as admin worked on my win7

13 Replies

6923 Views

Last post by djsnowman06
Sun Nov 24, 2013 11:30 am
My second spud gun (Meter pipe DIY inside)

Last post by djsnowman06
Replies: 7
by David603 » Wed Jan 04, 2012 7:31 pm

First post

I did this for my friend a while back trying not to make the same errors I did with my first one. I went with a shorter meter pipe to be more acurate...

Last post

Best propane mix is ~4% volume/volume

7 Replies

17669 Views

Last post by djsnowman06
Sat Nov 23, 2013 5:44 pm
M-55 Mk1 & Mk2, Revision 1.0

Last post by Tombstone
Replies: 7
by Tombstone » Sat Aug 17, 2013 9:20 pm

First post

Here are my 2 beasts, the M-55 MkI(Tan) and MkII(Green), after Revision 1.0...BADASS GUNS!! ;)

Last post

Thx buddy!! metered MAPP is the next evolution on my guns...watch for new guns and mods on these in a few months :P

7 Replies

5221 Views

Last post by Tombstone
Sat Nov 23, 2013 3:30 pm
Fuel injection question

Last post by Walter103
Replies: 6
by Walter103 » Sun Nov 17, 2013 5:33 pm

First post

Hi!
I am building a fuel injection system for the gun I'm building. It employs a solenoid valve that will soon be controlled by an arduino board. I...

Last post

I think what I may do in just cap a piece of vinyl tubing, drill different sized holes in it, and see what kind of precision I can get with the...

6 Replies

3922 Views

Last post by Walter103
Wed Nov 20, 2013 1:01 pm
my latest build..... the" Mini 8"

Last post by sw5amped
Replies: 3
by sw5amped » Wed Nov 13, 2013 7:04 am

First post

I have 5 combustion guns all which have chamber sizes no smaller than 170 cubic inches. The Mini 8 has a chamber volume of 83 cubic inches. It's got...

Last post

IMG_20131110_191246.jpg What's Up mark. what you see here is a 1.25 full port ball valve. this Canon can exhaust its chamber in about 6 seconds. I'm...

3 Replies

2936 Views

Last post by sw5amped
Thu Nov 14, 2013 8:23 am
DBC (Just Throw It In the Bag)

Last post by mark.f
Replies: 6
by mark.f » Sat Nov 02, 2013 10:34 pm

First post

Duffel Bag Combustion

I've had this made for quite some time, it was just igniter and fan-less. Figured I'd fix it up real quick this weekend and...

Last post

STHORNE posting about one of my builds?
pg83q.jpg
:D

6 Replies

8430 Views

Last post by mark.f
Tue Nov 05, 2013 8:51 pm
marble spud gun cheytac m200 style

Last post by satriyo
Replies: 19
by satriyo » Thu Oct 24, 2013 10:29 pm
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First post

i have some problem with my spud gun. if i'm not fill the chamber with much fuel it doesn't work. and sometimes the igniter spark doesn't work. can...

Last post

does my chamber is too long? so that's make not total combustion?
19 Replies

18852 Views

Last post by satriyo
Mon Nov 04, 2013 6:31 am
*elektric ignition system * and *chamber*

Last post by mark.f
Replies: 6
by xyourhorror » Tue Oct 29, 2013 12:20 pm

First post

Hello guys

First i have to say that i am new in this forum und say sorry if i have opend a threat with a subjact that already exist.
I am planing to...

Last post

Ah, nice catch you you as well.

6 Replies

3075 Views

Last post by mark.f
Tue Oct 29, 2013 4:54 pm
just made fist spud gun !Works!Looking for tips?

Last post by jackssmirkingrevenge
Replies: 5
by Spud gun » Wed Sep 04, 2013 1:27 am

First post

So I want to use butane. I'm using ABS, and I want to fill the chamber with out opening it. If I cut a lighter in half can I use that if I mount it...

Last post

I can't even imagine that even a lighter can be use with this one. Is it not dangerous?

Why would it be dangerous?

5 Replies

2989 Views

Last post by jackssmirkingrevenge
Wed Oct 23, 2013 7:54 am
HELP-New BBQ Ingiter Sparks Intermittently - HELP

Last post by jackssmirkingrevenge
Replies: 3
by TheGovernor » Sun Oct 20, 2013 5:58 pm

First post

New to this hobby....please be patient I could not find the answer I am looking for after searching for after about an hour. I would hate to chalk...

Last post

How close are the electrodes? You should have around 1/4 for reliable ignition. Could it be that theu have moved and are now too far apart?

3 Replies

2471 Views

Last post by jackssmirkingrevenge
Wed Oct 23, 2013 7:44 am
Shotgun style grenade launcher from SPUD COMMANDER

Last post by dart guy
Replies: 10
by SPUD COMMANDER » Mon Sep 30, 2013 7:59 pm

First post

Here is an interesting design we came up with. Its a cross between a shotgun look and grenade launcher. I added a homemade stock to the rear and...

Last post

i mean you can see the spud comming out, also i want to know how it works because it seems interesting.

10 Replies

22674 Views

Last post by dart guy
Fri Oct 11, 2013 3:22 pm
Some tips if possible please

Last post by Technician1002
Replies: 4
by Houseton » Fri Oct 04, 2013 5:34 pm

First post

Hello I am new to the forum, been looking around for a long time to accurately build my first spud gun (golf ball launcher).

Just had a few...

Last post

It does need to be prevented from blowing out. It does not need to be glued. On a pneumatic I made, with a 2 inch screw on barrel (ABS) a golfball...

4 Replies

3419 Views

Last post by Technician1002
Sat Oct 05, 2013 12:40 am
My Vacation Potato Cannon

Last post by halvamir
Replies: 1
by halvamir » Mon Sep 16, 2013 8:12 pm

First post

4 X12 chamber
2 X4' Barrel
Barbeque ignitor

Last post

Nothing fancy, but alot of fun. This was my first gun, I made it for me and my kid.

1 Replies

2048 Views

Last post by halvamir
Mon Sep 16, 2013 8:14 pm
My first spudgun!

Last post by Gun Freak
Replies: 9
by spamspam79 » Wed Sep 04, 2013 11:18 pm

First post

Well, I've been lurking around here for quite a while now, and decided to put some of what I've seen to use. This is my first spud gun, not counting...

Last post

Video was just black the whole time for me :lol:

9 Replies

7698 Views

Last post by Gun Freak
Thu Sep 12, 2013 8:26 pm
M-55 Mk.III

Last post by Tombstone
Replies: 3
by Tombstone » Sun Sep 01, 2013 4:40 pm

First post

My latest cannon, the M-55 Mk. III, based on the trusty M-55, it features a longer chamber and barrel, same fan module/control box(not installed in...

Last post

The M-55 MarkIII looking good in the sun... ;)

3 Replies

3852 Views

Last post by Tombstone
Sat Sep 07, 2013 9:29 pm
The MasterTater

Last post by sw5amped
Replies: 12
by themastertater » Mon Aug 26, 2013 2:42 pm

First post

I'd like to get some opinions on my first completed gun.

Dimensions and specs are all included in the video:

Thanks.

Last post

Hey bro. The gun looks great. U should give some more detail to the technical aspects of it. U said in the video that it has a23 chamber with a cb...

12 Replies

7356 Views

Last post by sw5amped
Sun Sep 01, 2013 6:48 am
M-55 MkI & MkII Revision 1.0 Mod. 1

Last post by Tombstone
Replies: 2
by Tombstone » Sun Aug 25, 2013 12:39 pm

First post

Hey guys! I improved on my M-55's with a new mount for my batt. packs/fan control units :) I made em from aircraft grade 0.050 in. aluminium, so no...

Last post

Looks really good... But you know you don't have to make a new topic every time you upgrade it ;)

Yeah, you're right bro, sorry lol, i'll stay in...

2 Replies

2521 Views

Last post by Tombstone
Sun Aug 25, 2013 12:43 pm
Bernzomatic Quickfire Cylnders Discontinued!!

Last post by motorfixer1
Replies: 5
by motorfixer1 » Fri Aug 23, 2013 6:22 am

First post

Earlier this week I was asked to be on the local radio station for a launcher demonstration. 95 WIIL Rock 95.1 fm in the southeast Wisconsin area to...

Last post

There are only a few pics on their fb page a little disappointing. if you are on fb their page is 95 WIIL ROCK a Morning Show and we were on tuesday...

5 Replies

8103 Views

Last post by motorfixer1
Sat Aug 24, 2013 6:15 pm
Grom rifle

Last post by jackssmirkingrevenge
Replies: 11
by NeoTheFox » Sat Aug 03, 2013 1:11 pm

First post

Hi guys, here is my first spud rifle. I made it using the remains from countryside home construction.
It fires well, but I have a problem - the...

Last post

Should it not be 30cm^3 (30cc) or 30mL?
Maybe I am missing something here! :)

I stand corrected :oops:

NeoTheFox, I'm pretty sure your chamber is...

11 Replies

7753 Views

Last post by jackssmirkingrevenge
Mon Aug 12, 2013 5:12 pm

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