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SpudFiles Potato Gun Commercial

Last post by quinn whitsitt
Posted in Combustion Cannons
Replies: 15
by PCGUY » Tue Oct 29, 2013 10:54 pm » in Combustion Cannons
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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

662329 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
Sketchup Model Library

Last post by mrfoo
Replies: 152
by dewey-1 » Tue Mar 24, 2009 12:12 pm
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Over the last year I have made a lot of CAD drawings for
Pneumatic Launchers.

I have imported several of them into Sketchup format.
Here is the link...

Last post

Bollocks. Dewey put them out in the hope that, and I quote

some of you can make use of these!

There's absolutely nothing wrong with using them,...
152 Replies

387864 Views

Last post by mrfoo
Mon May 20, 2024 11:17 am
Solvent Welding Course Recommended For ALL

Last post by Technician1002
Replies: 46
by sgort87 » Fri Aug 04, 2006 8:18 pm
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Originally posted by DR on the Spudtech forums:

IPEX Solvent Cements ONLINE Course can be found here:

It is recommended that you download and...

Last post

Your earlier post about just scoring the surface, has me wondering if that is why OATEY makes a brush tool that scores the inside of a fitting, and...
46 Replies

203189 Views

Last post by Technician1002
Thu Dec 02, 2010 5:04 pm

Topics

No more rubber or springs! Use magnets...

Last post by c19o
Replies: 15
by c19o » Thu Dec 06, 2007 1:12 am
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I was playing around today with some ring shaped neodymium magnets and a wooden rod ( shooting em off by pushing opposing poles together...) and a...

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Well I was going to use some ring magnets if I couldn't make a spring, which I probably can't.
15 Replies

4046 Views

Last post by c19o
Thu Dec 06, 2007 6:45 pm
What would you like to see annihilated?

Last post by mtronic
Replies: 60
by DYI » Sun Nov 18, 2007 4:03 pm
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After some testing yesterday and today, the SCTBDC v1.5 is operational, and seals perfectly up to ~400 psi. Now of course, this seems too good to be...

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shoot a garden gnome... PLEASE!!!!! lol. i dont care if the garden gnome is the projectile or the target........

I second this notion, only I...
60 Replies

13977 Views

Last post by mtronic
Wed Dec 05, 2007 6:17 pm
florescent tubes

Last post by Mr. Beaver
Replies: 17
by iknowmy3tables » Mon Dec 03, 2007 3:46 pm
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I recently found that some used florescent tubes (those long light bulb things) fit pretty will in a 1.5 pvc barrel, I remember throwing them like...

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from my knowledge i think ... i'm sure it's a bad idea but from what this says the florescent tubes aren't that rare ammunition anyway maybe i'm just...
17 Replies

10181 Views

Last post by Mr. Beaver
Wed Dec 05, 2007 12:05 pm
Is modding a sprinkler valve nessisary for a newby cannon?

Last post by spudy buddy
Replies: 41
by spudy buddy » Thu Nov 29, 2007 10:25 pm
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I know I am totaly new to Spudfiles ,but I just wanted to ask a newby question. Is modding a valve totaly nessisary for a cannon to work? :? I mean...

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Oh, that's cool. I'll probably do that. It's just some PVC with a slot in it right?

Without the stopers wont it be worse because not all the ari...
41 Replies

8805 Views

Last post by spudy buddy
Sun Dec 02, 2007 10:57 pm
Post your inventory of building materials!

Last post by PVC Arsenal 17
Replies: 3
by PVC Arsenal 17 » Sun Dec 02, 2007 5:03 pm

First post

Deleted

Last post

Those are 4 x 2 reducing tees, just stacked up. They were going to be part of my Omega Project's barrel supports.

3 Replies

875 Views

Last post by PVC Arsenal 17
Sun Dec 02, 2007 5:25 pm
EVBEC, a combustion "simulation" spreadsheet

Last post by boilingleadbath
Replies: 20
by boilingleadbath » Mon Jan 09, 2006 6:23 pm
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EVBEC stands for Energy & Volume Based Estimator for Combustions.
It is based on latke's chamber:barrel test data.

As of Jan 7th, 2007, it can be...

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Much thanks to Chris Keiser for a user-interface upgrade for the spreadsheet version of EVBEC.

I suppose EVBECsheet is nice in that it allows you to...
20 Replies

10023 Views

Last post by boilingleadbath
Sun Dec 02, 2007 1:46 pm
Barrels...

Last post by octane89
Replies: 16
by octane89 » Sat Dec 01, 2007 5:28 pm
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Barrel diameter and lengths, as we know, have a critical impact on how a cannon may perform. However, I was wondering on this fact. Does the barrel's...

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I found this-

I just need to enter the mass and velocity.

On a side note, I was thinking of using MAPP gas, and I don't think I'd encounter any...
16 Replies

4662 Views

Last post by octane89
Sun Dec 02, 2007 12:54 pm
I have some spare money...

Last post by cdheller
Replies: 6
by Ragnarok » Sat Dec 01, 2007 12:08 am

First post

So, I'm closing on the end of the Uni semester, surprisingly with a large amount of cash in my bank account.

As I never bought myself a proper...

Last post

My second chronograph (Oehler Model 35P) has separate,replaceable sky screens (sensors) and main unit.
If I knew what was going to happen ,,, I...

6 Replies

1588 Views

Last post by cdheller
Sat Dec 01, 2007 12:03 pm
Cheap-Easy Breech Loader

Last post by octane89
Replies: 3
by octane89 » Thu Nov 29, 2007 8:02 pm

First post

What you would need:
-coupler (matched to fit barrel)
-spring
-Plastic/Acrylic/Wood/Steel (doesn't matter, for the folding arm and as well as a...

Last post

Yes like that cannon-
Funny thing is after I posted this I seen that one by accident. I even looked before hand to see if anyone had done it before.

3 Replies

1431 Views

Last post by octane89
Sat Dec 01, 2007 7:23 am
Epoxy turned rubberized in my diapghragms why?

Last post by explsvcookie257
Replies: 7
by explsvcookie257 » Fri Nov 30, 2007 8:26 pm

First post

Ok so heres what going on. My cannon used to not fire with a blow gun attached to the sprinklers and I fixed it by making the equalization hole on...

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yeah thats what i was going to do but ill probably get alot of air bubbles and hopefully its low viscosity i guess i will find out when i go to hobby...

7 Replies

2456 Views

Last post by explsvcookie257
Fri Nov 30, 2007 10:41 pm
Full Meter Plans For Combustion Launcher.

Last post by jimmy101
Replies: 8
by wangpushups » Thu Nov 29, 2007 9:36 am

First post

I'm just keeping this short and simple... Here's how to make the meter for my combustion cannon...

Here is a pic of my launcher...

Here's all...

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He could, but getting the right pressure without a regulator can be tricky sometimes. It's easy to overshoot if your only flow restriction is a...

8 Replies

5735 Views

Last post by jimmy101
Fri Nov 30, 2007 1:13 pm
Onboard Air Compressor

Last post by mark.f
Replies: 5
by miskaman » Thu Nov 29, 2007 10:31 pm

First post

People have onboard propane, why not onboard compressed air? I'm thinking something like here could work, but one problem. Could I change it to run...

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What you need to do is build a small air compressor with a 12V motor.

A high-RPM motor, a gearbox, a shaft with connecting rods going to a piston...

5 Replies

1675 Views

Last post by mark.f
Fri Nov 30, 2007 6:42 am
Spudtech Is Officially For Sale

Last post by mark.f
Replies: 39
by SGTCSpudmaster » Tue May 01, 2007 11:50 am
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Thats's right guys.....I'm hangn' it up. Check the following link for all the details.,

Joel

Last post

I'm guessing significantly less than that, simply because materials cost, electricity costs, and minor mistakes cost. Also, if you don't have another...
39 Replies

13800 Views

Last post by mark.f
Fri Nov 30, 2007 6:36 am
Ramrod/Pump

Last post by Hawkeye
Replies: 9
by Hawkeye » Wed Nov 28, 2007 5:37 pm

First post

With some discussions often leaning towards attaining higher pressures more readily it occurred to me that it might be easy to quickly pump up a gun...

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How were you measuring pressure in the barrel? I still don't follow how cracking the seal slightly will release all the air. If you don't crack the...

9 Replies

2902 Views

Last post by Hawkeye
Thu Nov 29, 2007 2:14 pm
Cool Spud video

Last post by paintballninja
Replies: 6
by VH_man » Sun Nov 25, 2007 4:31 pm

First post

Sorry if this is in the wrong place i dont know where to put it......

I was bored and i found this. its pretty cool............ i want a slo-motion...

Last post

very nice, slo-mo is freakin awsome

6 Replies

2189 Views

Last post by paintballninja
Thu Nov 29, 2007 1:54 pm
Difference between air/water cannon

Last post by The Kid
Replies: 20
by Lftndbt » Mon Nov 26, 2007 9:36 pm
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I've noticed in general... Perhaps i'm wrong...
That laws in regards to air cannon's and projectile weapons, seem to come under most countries fire...

Last post

And to get a license... You need...
Resonable cause, or to register with a shooting club and attend 3 events a year.
A clean record (To an extent....
20 Replies

5780 Views

Last post by The Kid
Thu Nov 29, 2007 4:12 am
Open Source Auto Hybrid .177 Calibre

Last post by SPG
Replies: 17
by SPG » Mon Nov 26, 2007 1:38 pm
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Ever since I first saw a hybrid I've been trying to work out my personal Holy Grail - the 177 auto-hybrid. In fact it was what got me into...

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There's nothing like a near-death experiences to give you a new lease of life hey?

Agani this isn't meant to be fully auto, merely semi-auto, or...
17 Replies

4769 Views

Last post by SPG
Wed Nov 28, 2007 11:17 am
Another Silencer Question

Last post by jackssmirkingrevenge
Replies: 5
by Hubb » Wed Nov 28, 2007 12:24 am

First post

In a thread, one said:
If you halve the chamber size but double the pressure, you'll get one huge amount more performance.

In another thread,...

Last post

Right you are, that'll teach me to bring math in 2 minutes before I have to leave for work.

For the 8 grain projectile in that imaginarry launcher,...

5 Replies

1051 Views

Last post by jackssmirkingrevenge
Wed Nov 28, 2007 9:41 am
Suppressor Q's

Last post by cwazy1
Replies: 14
by cwazy1 » Fri Nov 23, 2007 8:21 pm

First post

So i am planning to build a suppressor for my combustion cannon. I was reading the how to topic of building a suppressor, and what i got out of it is...

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k the suppressor is added. its definitly more quiet. (its right where i want it. in terns of how loud it can be without being annoying) powerloss is...

14 Replies

3771 Views

Last post by cwazy1
Tue Nov 27, 2007 7:19 pm
Putting spud cannon up for winter....

Last post by ShowNoMercy
Replies: 12
by lleno11 » Mon Nov 26, 2007 4:31 pm

First post

I noticed in another post that some folks were saying it was time to stopspudding for the winter??? Why is this?? Is ther some danger related to the...

Last post

The liberty ships failed due to improper welding techniques combined with cold water, however the steel itself did not fail.

12 Replies

2415 Views

Last post by ShowNoMercy
Tue Nov 27, 2007 12:46 pm
How to make luminecent tracer ammo.

Last post by octane89
Replies: 7
by zeigs spud » Mon Apr 30, 2007 10:03 pm

First post

here is a quick guide on how to make luminecent tracers on objects such as tennisballs, slugs, ect.

Materials-
1-3 non-toxic glow sticks
1-glass...

Last post

I work at a hardware store (Aco) and In know there is Glow paint made by rustoleum. I think it is about $14-20 for a quart. Probably a easier thing...

7 Replies

14584 Views

Last post by octane89
Mon Nov 26, 2007 6:20 pm
How paintball guns work.

Last post by Hailfire753
Replies: 9
by SPG » Mon Nov 26, 2007 9:29 am

First post

This site was posted on Arnie's Airsoft, and I thought it might be useful for pneumatics builders. It shows a selection of animations of the...

Last post

I figured it was a reg, lol. Great design though! I think I am better off buying a reg, as I am dealing with C02 tank pressures of up to 800 psi. I...

9 Replies

2383 Views

Last post by Hailfire753
Mon Nov 26, 2007 12:49 pm
noise inducer

Last post by Orpackrat
Replies: 18
by hi » Thu Nov 22, 2007 9:33 pm
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it seems like everyone is trying to make there cannons quieter and quieter with all the new suppressors designs and so forth...

i was just wondering...

Last post

Have you ever seen a Dishka on a paintball guns barrel. Without any porting on the barrel (or plugged porting) the Dishka is a cone shaped device on...
18 Replies

4428 Views

Last post by Orpackrat
Mon Nov 26, 2007 12:06 am
las vegas, nevada

Last post by blind909
Replies: 9
by blind909 » Fri Oct 26, 2007 11:33 pm

First post

can anyone tell me when the next ipla meeting will be in las vegas, nevada?

Last post

i am banned from ANYTHING that shoots until i get all my grades above d's so hopefully i will buckle down, so i will make it.

9 Replies

4134 Views

Last post by blind909
Sun Nov 25, 2007 10:52 pm
Electric steam cannon?

Last post by Necrosis
Replies: 17
by daccel » Fri Nov 09, 2007 4:18 pm
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Just had an idea today about using an electric arc to vaporize water creating steam pressure that would propel the projectile. Not sure if this is...

Last post

Wich would create even more pressure, though.
Along with a stoichiometric mix of pure O2 and H2 which has a lower ignition energy than oxy-acetylene...
17 Replies

3868 Views

Last post by Necrosis
Sun Nov 25, 2007 1:34 pm

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