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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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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

1193759 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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First post

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

621909 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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First post

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

334399 Views

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

Topics

Mythbusters supersonic pingpong ball cannon

Last post by jackssmirkingrevenge
Replies: 5
by Pilgor » Mon Mar 10, 2014 8:55 pm

First post

They eventually made the barrel much longer, and added a chamber.

Last post

Would this work with Nerf Darts? They are also light, and have a really good snug fit in the barrel.

No reason why it shouldn't.

5 Replies

5063 Views

Last post by jackssmirkingrevenge
Fri Mar 14, 2014 9:21 am
Can you get SH80 strength from SH40?

Last post by BowerR64
Replies: 7
by BowerR64 » Wed Mar 12, 2014 8:56 pm

First post

A guy i know built his first combustion spud gun but he did it a different way then ive seen.

He used like 5 couplers and cut up 4 in little section...

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Ive already built 3 cannons but i was just curious about the stuff im using, i dont know the types of pressure im pushing the parts or any way to...

7 Replies

3357 Views

Last post by BowerR64
Thu Mar 13, 2014 1:17 pm
Ideas?

Last post by Juggernaut12121
Replies: 4
by Juggernaut12121 » Thu Mar 06, 2014 6:37 pm

First post

A little bit of background: I've always built some big and clumsy cannons and hate dragging them and all the other things I need to shoot (fuel...

Last post

Thanks very much! I've looked through the showcases and some other sites to get ideas and I feel ready to start designing :D

4 Replies

2552 Views

Last post by Juggernaut12121
Sat Mar 08, 2014 11:01 am
Rookie advice

Last post by jackssmirkingrevenge
Replies: 2
by Andgravy » Tue Mar 04, 2014 10:08 am

First post

Hey spudfiles!

I'm new to the game so to speak but I've recently moved into the middle of nowhere and have some free time so I reckon it's time to...

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What jrrdw said, a simple combustion is a great start to make a powerhouse on a low budget. Rather than spraying and praying though, let science be...

2 Replies

1651 Views

Last post by jackssmirkingrevenge
Wed Mar 05, 2014 7:22 am
distance

Last post by Scrambles622467
Replies: 26
by nerfnerd111 » Mon Feb 21, 2011 10:37 am
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hey guys i was just wondering. what r your personal achievments of how far your guns have went. I am a nerfer and my homemade went 80ft+. now i want...

Last post

My best with a potato is 1400 feet. Using google earth
26 Replies

10871 Views

Last post by Scrambles622467
Wed Mar 05, 2014 1:32 am
Plans for the cannon on the SpudFiles image?

Last post by Ragnarok
Replies: 3
by BowerR64 » Mon Feb 03, 2014 6:14 am

First post

The front sight has this animated guy holding a build and i like how it looks. The larger tube with the smaller one inside it looks cool but ive...

Last post

Nothing, it's not on the original. It looks like whoever created the logo mistook a couple of primer stains as a cut-out.

3 Replies

2262 Views

Last post by Ragnarok
Fri Feb 28, 2014 6:20 am
Help! Building Rapid Fire Vortex Smoke Ring Shooter

Last post by dart guy
Replies: 3
by VIDeeOH » Sat Feb 01, 2014 11:57 pm

First post

Hey there all. Trying to figure out the best way to design and build a wearable (ideally using a shoulder mounted motorized turret), quick re-firing...

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I could see it working if you could have it so one ball valve opens to fill the chamber and then closes the have one that will open fast for firing.

3 Replies

4445 Views

Last post by dart guy
Fri Feb 14, 2014 10:40 am
Cold weather ignition

Last post by jimmy101
Replies: 3
by Vagcannonmrk6 » Tue Feb 11, 2014 7:54 pm

First post

I am having trouble with reliable ignition in cold weather. My cannon is a 20Lb propane tank sporting an eight foot barrel with welded spark plug...

Last post

Regardless of how you measure the fuel it takes longer for the fuel to mix when the temp is cold. A chamber fan overcomes that problem. If you don't...

3 Replies

2645 Views

Last post by jimmy101
Thu Feb 13, 2014 5:51 pm
Small Portable Compressors

Last post by PeteS
Replies: 4
by PeteS » Thu Jan 23, 2014 7:22 am

First post

I tried a cheap one from Harbor Freight and it was a complete joke. The gauge read 120 when it topped out, but actual pressure was 50 and it is...

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On any of the small compressors, check the duty cycle. Some will melt down if you try to keep an air cannon filled for an afternoon of launching...

4 Replies

4208 Views

Last post by PeteS
Mon Jan 27, 2014 7:14 am
Metal spud cannon fuel ratio.

Last post by jackssmirkingrevenge
Replies: 3
by Buyerz » Thu Jan 16, 2014 9:39 pm

First post

This is the first time I have really built a spud cannon. Propane powered made out of plumbing fittings. This thing really shoots well when I take...

Last post

What is a good type of fan to use and how should I position in inside? thanks

A PC cooling fan which fits, and wherever you want really, the idea...

3 Replies

4551 Views

Last post by jackssmirkingrevenge
Sun Jan 19, 2014 4:14 am
Fire Extinguisher Modification

Last post by Gippeto
Replies: 13
by Alessandro » Sat Oct 07, 2006 6:27 am

First post

A fire extinguisher can make a perfect high pressure air storage tank. It can be quite useful for refilling a pneumatic cannon for a second shot...

Last post

Is the pressure rating the same as the bursting pressure?

No. :|

Do some googling grasshopper.

13 Replies

31443 Views

Last post by Gippeto
Sat Jan 18, 2014 10:08 pm
Pump Piston Question

Last post by jrrdw
Replies: 3
by PeteS » Sun Jan 12, 2014 4:59 pm

First post

I am making an aluminum piston for my Silca track pump, since the original piston has broken after 30+ years of use. It is a nice pump and has some...

Last post

Several different styles in the 'Machinist' thread. You can also do a keyword search for 'aluminum piston'.

3 Replies

2767 Views

Last post by jrrdw
Mon Jan 13, 2014 3:28 am
Barrel crown question

Last post by Ragnarok
Replies: 17
by PeteS » Tue Dec 31, 2013 9:13 pm
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With target firearms great emphasis is given to barrel crown. Since I am likely to cut spud gun barrels with a hacksaw and by eye, I wonder how much...

Last post

Given one of your arguments is against flatline barrels, paintballs are an important example.

In any case, the factors you're quoting are...
17 Replies

8734 Views

Last post by Ragnarok
Thu Jan 09, 2014 12:35 pm
Cheap c02 setup

Last post by 1nxtmonster
Replies: 3
by 1nxtmonster » Tue Jan 07, 2014 10:52 am

First post

Does atone know how to reg down c02 (paintball or 12 gram) for under $100? I saw palmer-pursuit had a 12 gram cart regulator, but are there any...

Last post

Yeah, it's for my airsoft gun that I'm building.

3 Replies

2430 Views

Last post by 1nxtmonster
Tue Jan 07, 2014 8:48 pm
Triggering Lightning With A Cannon - Plausible or Not?

Last post by jimmy101
Replies: 30
by KurlyQ » Mon Oct 28, 2013 3:13 pm
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Hi All! Long time lurker here.

I've been interested in potato cannons (mostly pneumatic) for some time now.
I'm also interested in lightning.

I'll...

Last post

I think JRRDW had the best idea; launch the spool without anything added to it. At launch you need to get the spool spinning so that the wire is...
30 Replies

15402 Views

Last post by jimmy101
Sat Jan 04, 2014 1:36 pm
Air cannon for launching bait into surf

Last post by PeteS
Replies: 28
by Skeeter 115 » Fri Dec 20, 2013 2:15 pm
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I hope I am asking this in the proper area.
I have no clue on how to build or how your air guns work but I want to make an air cannon to send send my...

Last post

PeteS, Did you use the cannon in your post above with a 48 1.5 barrel ? And you used a 0.8:1 ratio with a 7oz plug and got 600' ?
Yes to all of that...
28 Replies

44095 Views

Last post by PeteS
Sat Jan 04, 2014 11:15 am
Equations of State for Gas Gun Applications

Last post by jackssmirkingrevenge
Replies: 3
by DYI » Tue Dec 17, 2013 1:00 am

First post

As usual, I'm up to something, and I've hit a bit of a stumbling block;

Most of the real gas equations of state currently in use have been developed...

Last post

Reading stuff like this makes me wish I paid more attention to thermodynamics at school :-/

3 Replies

6090 Views

Last post by jackssmirkingrevenge
Wed Dec 18, 2013 9:18 am
What to do with fire extinguisher tank?

Last post by PeteS
Replies: 7
by PeteS » Sat Dec 14, 2013 2:22 pm

First post

I have an old fire extinguisher tank it was from a disposable powder type kitchen extinguisher. It is aluminum and it took about 675 ML to fill it....

Last post

Opinions seem to range pretty widely on what this tank might be used for.

I am not sure which way I will go. I'll have to mull it over a while.

7 Replies

6189 Views

Last post by PeteS
Sun Dec 15, 2013 6:47 am
How-to: remote ignition

Last post by POLAND_SPUD
Replies: 80
by MrCrowley » Thu Nov 10, 2011 4:01 am
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I recently made a simple remote ignition circuit for a hybrid cannon. Once you have all the components, the rest is just a matter of soldering so...

Last post

Just to give you an idea of how small things can get - the pressure sensor I recently bought, the IC itself, is 1.2 X 5 X 5mm in size

ohh and here...
80 Replies

33222 Views

Last post by POLAND_SPUD
Mon Dec 09, 2013 11:06 pm
Camera flash ignition - my experience

Last post by vxrtol
Replies: 4
by vxrtol » Sat Nov 30, 2013 4:17 am

First post

Hello fellow crazy people.

I know there has been posts on camera flash ignitions but I would like to share my experience. As you can guess my...

Last post

Latest video

Since my last post I have upgraded to a bigger coil. I got this one from a gas hob, and it has 2 secondary coils. I have joined these...

4 Replies

3241 Views

Last post by vxrtol
Sat Dec 07, 2013 9:10 pm
Getting Back in the Saddle

Last post by rna_duelers
Replies: 17
by noname » Sat Oct 19, 2013 11:48 pm
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Hey guys, it's been a while. I still lurk semi frequently but university has been eating up my time the past couple years. The only exposure to...

Last post

I recently had a run in with spudguns again,well..I might have planned this run in but non the less it never looses it fun factor!An ol' spray 'n'...
17 Replies

9684 Views

Last post by rna_duelers
Thu Nov 28, 2013 10:26 am
Straight exhaust pipe tubing

Last post by PeteS
Replies: 3
by PeteS » Sun Nov 24, 2013 9:38 am

First post

Anyone know what kind of pressure this stuff is likely to be good for? I see that there is aluminized steel 1.75 OD 17 gauge tubing available that...

Last post

I will, however, point out that my maths says 1.75 OD - 17 gauge walls = 42.15 mm . Golf balls are supposed to be not less than 42.7mm. Unless the...

3 Replies

4186 Views

Last post by PeteS
Sun Nov 24, 2013 3:10 pm
Burst disk burst pressures

Last post by wyz2285
Replies: 6
by PeteS » Tue Nov 19, 2013 3:56 pm

First post

There was a thread about this a while ago, but I went away without many answers. That may be because there are just no acceptable answers, but I...

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I used to have a table for bursting pressure of aluminium foil at 1/2 inch and 3/4 inch diameter. Lost it a while ago, it's terrible choice for high...

6 Replies

9717 Views

Last post by wyz2285
Fri Nov 22, 2013 6:04 pm
How to cast a trigger with minimal equipment and tools.

Last post by hawktalk
Replies: 8
by nathan9117 » Wed Sep 04, 2013 8:44 pm

Thats right you read it. I am going to show how to make a simple cast of a trigger and a sear. This will be very basic and using basic things. I...

8 Replies

7116 Views

Last post by hawktalk
Tue Nov 19, 2013 4:16 pm
Quieter Launchers

Last post by PeteS
Replies: 10
by PeteS » Wed Nov 13, 2013 3:09 pm

First post

I have been tinkering with a silencer on one of my combustion launchers and it has been somewhat successful. The silencer volume is about the same as...

Last post

What are you using for fuel? In my experience, a C:B ratio of 0.9:1 - 1:1 with a 1.5 or 2 bore makes for a pretty quiet, relatively well performing...

10 Replies

5898 Views

Last post by PeteS
Sat Nov 16, 2013 9:09 am

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