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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

648360 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

383624 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

199835 Views

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

Topics

free chrono app really works??

Last post by speedballs
Replies: 4
by speedballs » Fri Mar 08, 2013 1:10 am

First post

I downloaded a free version of crono connect from play store, after tooling around with it playing with settings, making noises (eeeee awwww) I put...

Last post

All good. Found it. Not worth finding really lol plus I found the edit reply also :D

4 Replies

2098 Views

Last post by speedballs
Fri Mar 08, 2013 8:28 am
How to determine projectile velocity with a phone book

Last post by speedballs
Replies: 49
by MRR » Wed Mar 21, 2012 4:48 pm
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A fellow YouTuber posted on one of my videos that he has build an air gun that is capable of 2000 fps. I told him that this figure is more than...

Last post

So would that be three sonic booms or two.. maybe I'm getting my maths wrong... or was it 20 rolls of 100mph tape gotta be good for 2000fps...
49 Replies

19156 Views

Last post by speedballs
Thu Mar 07, 2013 10:28 pm
Why do you have never done this?

Last post by RJB INDUSTRIES
Replies: 9
by RJB INDUSTRIES » Mon Mar 04, 2013 3:05 pm

First post

Hello everyone, I am working on a SMB, sky-movie-bullet,
I install a small camera inside the ammos and I make movies and pictures about the places...

Last post

Do that, it´s really good, i´m doing a lot of videos.... really nice quality...

RJB INDUSTRIES

9 Replies

4551 Views

Last post by RJB INDUSTRIES
Thu Mar 07, 2013 10:05 am
Golf ball tees for ammo?

Last post by jsefcik
Replies: 5
by Nick481 » Thu Feb 21, 2013 4:55 pm

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I want to make a long (for a pistol) coax pneumatic piston gun. Im trying to find good cheap ammo and i looked at my golf tees and thought, hmm,...

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Yeah its not a very good fit, but it can't always be tight can it? :lol: anyways though, any other suggestions for ammo? I know marbles are popular,...

5 Replies

2169 Views

Last post by jsefcik
Thu Feb 21, 2013 11:12 pm
I need the help of the community

Last post by mobile chernobyl
Replies: 5
by sagthegreat » Tue Feb 19, 2013 7:07 pm

First post

Hello guys, Im a long time member, just lazy to log in, but I recently entered a contest on instructables, and entered in a how-to on a coaxial air...

Last post

I wish spudfiles had a like button for that post JSR! lol :D

To the OP:

Beyond what JSR said - props for going through with creating an...

5 Replies

2608 Views

Last post by mobile chernobyl
Thu Feb 21, 2013 8:43 am
Fridge Compressor

Last post by Heimo
Replies: 24
by POLAND_SPUD » Tue Jun 12, 2012 10:37 am
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This is my (new) fridge compressor...
there are many like it but this one is mine
:D

As promised I started making a tutorial
here is a...

Last post

I guess this is sorta supplementary to poland's video
24 Replies

19803 Views

Last post by Heimo
Thu Feb 14, 2013 6:27 pm
Ramjet Sabot

Last post by PaperNinja
Replies: 54
by PaperNinja » Tue Dec 11, 2012 6:48 pm
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I've been thinking about: ramjets in ram accelerators until I realized that a projectile with a ramjet would not be very expendable, and then I'd...

Last post

Model rocket engines are not really what I'm interested in :)
54 Replies

21269 Views

Last post by PaperNinja
Tue Feb 12, 2013 5:38 pm
Building a fuel meter

Last post by wyz2285
Replies: 2
by wyz2285 » Fri Feb 01, 2013 2:09 pm

First post

Well I decided the other day to build myself a decent fuel meter setup. Currently I got a steel bottle from a friend, tested it to 20bar, should be...

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Ill add on a lot stuff later, like a gauge and pressure relief valve. But the only one I could find only holds 8 bar

2 Replies

1418 Views

Last post by wyz2285
Fri Feb 01, 2013 2:41 pm
seamless stainless steel tub

Last post by far_cry
Replies: 5
by far_cry » Sat Jan 26, 2013 5:04 am

First post

i bought an seamless stainless steel tub with OD of 10mm and ID of 8mm,
that tube will serve me in my project , rifling it.
tried to fit 7.9mm...

Last post

Where'd you get the tube at? Do they have big sizes also?
they have a lot of sizes,but do you have the money for it .

5 Replies

3127 Views

Last post by far_cry
Tue Jan 29, 2013 11:17 pm
I have a propane meter question

Last post by Cy4ka
Replies: 7
by Cy4ka » Wed Jan 23, 2013 9:15 pm

First post

I have a question about the propane meter pipe everyone is using for their combustion cannons. I am making my first advanced type cannon and would...

Last post

Lol, ok thanks. :P

7 Replies

2478 Views

Last post by Cy4ka
Thu Jan 24, 2013 8:56 pm
Chamber fan. Do I really need it for propane meter injection

Last post by jackssmirkingrevenge
Replies: 9
by Ziptietech » Tue Jan 15, 2013 8:51 pm

First post

Well I finished my canon and I forgot to put in a chamber fan. Well I'm not able to take it apart now and I can't get in the chaner because I used a...

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[quote= ]You've now learned the lesson it took forever for JSR to learn... make your projects serviceable. :p

I had missed this :D

9 Replies

3906 Views

Last post by jackssmirkingrevenge
Thu Jan 24, 2013 12:44 am
Spring Gun Design Tool Thread

Last post by btrettel
Replies: 15
by cammyd32 » Fri Jan 11, 2013 5:36 pm
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Hello All!

After being here for a while I have seen numerous inquisitions regarding 'spring guns', which function via a plunger being pushed forward...

Last post

Also what could be worth considering is forming a design programme that is made entirely from experimental data, have you ever considered such an...
15 Replies

8714 Views

Last post by btrettel
Wed Jan 23, 2013 8:23 pm
I need a 6"-to-4" PVC reducer fitting... ?

Last post by mark.f
Replies: 3
by Essohbe » Sun Jan 20, 2013 8:32 pm

First post

I have specs for a 6 chamber and 3 barrel. I can get away with a 4 chamber but it's almost as long as the barrel, I want to use a 6 chamber instead....

Last post

lol, McMaster is usually a good bit more expensive than other suppliers (but they have uuurthang ). A 6x4 bushing is almost 23 bucks.

3 Replies

2603 Views

Last post by mark.f
Sun Jan 20, 2013 9:33 pm
Dimensionally stable skirmishing projectiles

Last post by jackssmirkingrevenge
Replies: 17
by Zeus » Mon Jan 14, 2013 10:20 pm
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I've been employed to design and make a few different sorts of airsoft gun, and the obvious limitation of airsoft is the projectile. BBs are easy to...

Last post

Looking at other real world examples, the M79 grenade launcher is generally regarded to be accurate against point targets up to 150 metres away...
17 Replies

9013 Views

Last post by jackssmirkingrevenge
Wed Jan 16, 2013 8:57 am
Ha! Dutch PCP's pre-date Girandoni!

Last post by jackssmirkingrevenge
Replies: 5
by Brian the brain » Sun Jan 06, 2013 2:53 pm

First post

for those interested in the history of PCP airguns

I found an old magazine I had once bought..wich contained an article about the early airguns....

Last post

Get out of my head JSR.

That's refreshing, usually it's Get your head out of me!!!! :roll: :D

5 Replies

3322 Views

Last post by jackssmirkingrevenge
Mon Jan 07, 2013 9:13 pm
Triggered Double Burst Disk Pneumatic

Last post by cowscankill
Replies: 10
by cowscankill » Fri Jan 04, 2013 3:17 pm

First post

So, after using Spudfiles for some 4+ years, I've finally made and posted something heheh. I haven't seen this design around much, so I thought I...

Last post

I can see a future for triggered burstdisc cartridges..

Bit complicated to make more than one...

I almost said to myself, Challenge Accepted....

10 Replies

5884 Views

Last post by cowscankill
Sat Jan 05, 2013 12:26 pm
Air Valves in Basketballs

Last post by Technician1002
Replies: 10
by CS » Sat Dec 29, 2012 5:03 pm

First post

Can't figure how they work. link My theory is that they are naturally constricted, and only allow passage of air once they are forced open. One...

Last post

Interesting analogy. Having seen one, they are a small ball of rubber that is cut with a slot that remains closed until a needle from the outside...

10 Replies

5181 Views

Last post by Technician1002
Fri Jan 04, 2013 10:47 pm
2" pistonvalve fittings for sale (BSP, stainless steel

Last post by MrCrowley
Replies: 3
by matti » Thu Jan 03, 2013 6:09 pm

First post

Hi, I have 316ss fittings for two 2 pistonvalves for sale :D

I had them for special piston hybrid, but i wanted to go bigger, so i machined the...

Last post

i dont see a piston?
2 pistonvalve fittings for sale (BSP, stainless steel

3 Replies

1655 Views

Last post by MrCrowley
Fri Jan 04, 2013 10:26 pm
Portable Multi-Shot using a QEV and Schrader Valve Concept

Last post by dewey-1
Replies: 17
by Binary Blue » Sat Dec 22, 2012 3:10 am
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I'm sure this configuration has been discussed and attempted before.

Did I get this right?

I have the pressurized air reservoir and shrader valve...

Last post

No, it is .247 .
17 Replies

7335 Views

Last post by dewey-1
Thu Jan 03, 2013 6:51 pm
Spudfiles member map

Last post by MrCrowley
Replies: 70
by benstern » Sat Jul 08, 2006 9:48 pm
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Since Spudtech has one, Spudfiels could use one.

post yourself so we can find each other.

Last post

this is ivan i have built a metred mapp gas combustion cannon but need some where decent to go and someone to share ideas for builds ring on
Hey,...
70 Replies

29019 Views

Last post by MrCrowley
Tue Jan 01, 2013 1:38 am
Chamber fan placement to ignition... ?

Last post by Essohbe
Replies: 2
by Essohbe » Sun Dec 30, 2012 10:51 pm

First post

From what I understand I would want the fan at the rear of my chamber then have the igniter somewhere in front of it, maybe right in the middle of...

Last post

I figured as much. I've seen people do it differently but then they didn't show their cannons actually working, quite possibly because they didn't....

2 Replies

1892 Views

Last post by Essohbe
Mon Dec 31, 2012 11:40 am
shrader valve threads

Last post by ramses
Replies: 20
by john bunsenburner » Sun Dec 06, 2009 11:23 am
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Well, after looking over the net I found that my schrader valves, assuming they are not from the UK have the following threads on them:

7.7 mm OD,...

Last post

I will say that the angle formed by the holes/flutes on the die will have a significant impact on its cutting ability, as will their surface finish....
20 Replies

23871 Views

Last post by ramses
Sat Dec 29, 2012 2:11 pm
NEW - RJB INDUSTRIES Pro Gas Quantity Calculator ( GQC )

Last post by RJB INDUSTRIES
Replies: 10
by RJB INDUSTRIES » Fri Oct 26, 2012 8:55 am

First post

This programme help us with the calculations to know how much fuel we have to put in the chamber to respect the stoichiometry of each reaction.
It...

Last post

You welcome,

Watch it on:

Thanks,

RJB INDUSTRIES

10 Replies

4578 Views

Last post by RJB INDUSTRIES
Fri Dec 28, 2012 6:01 pm
Soundmuffler for full auto combustion.Need input..

Last post by D_Hall
Replies: 6
by Brian the brain » Fri Dec 14, 2012 11:41 am

First post

I was kinda hoping you guys could help me out.

I need a muffler that fits inside of a 42mm pipe.
It needs to be heat resistant, as it will be...

Last post

A series of stacked basket diffusers?

6 Replies

2401 Views

Last post by D_Hall
Sat Dec 22, 2012 7:16 pm
Questions about a blow-forward bolt

Last post by Brian the brain
Replies: 12
by acs2997 » Thu Nov 29, 2012 4:46 pm

First post

I'm in the middle of designing a semi auto pneumatic gun and to do so, I was considering using a blow-forward bolt but after looking over several...

Last post

have also been looking into a way to connect my air tank to a hopper, but in my design, it seems my golf ball would fall down before the gun could...

12 Replies

6925 Views

Last post by Brian the brain
Fri Dec 14, 2012 11:31 am

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