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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

651731 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

384755 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

200496 Views

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

Topics

I still haven't learnt...

Last post by MrCrowley
Replies: 29
by MrCrowley » Wed Sep 16, 2009 1:25 am
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...to always use a backstop.

Some of you may have seen my 'Just Went Mach 1' thread where I posted some of videos of my hybrid. Both JSR and I...

Last post

The lighter calcium sand would have less stopping power than an iron rich volcanic silicon oxide based sand.
Well that's good, because Auckland has...
29 Replies

5525 Views

Last post by MrCrowley
Wed Sep 16, 2009 10:16 pm
Highspeed camera.

Last post by Insomniac
Replies: 31
by hoarp001 » Sun Sep 13, 2009 5:52 pm
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Hi,

I havn't posted on here for a while, but its Pete, the UKSGC founder.

Was just posting as I have some exciting news.

I work in the film...

Last post

Oh and don't forget, a bunch of old CD's. They shatter and spray flying bits of plastic everywhere, while the lightweight foil peels off into tiny...
31 Replies

8649 Views

Last post by Insomniac
Wed Sep 16, 2009 5:19 pm
What cannon parts should I machine?

Last post by psycix
Replies: 5
by Dave_424 » Tue Sep 15, 2009 4:49 pm

First post

Hey guys, recieved my lathe a while ago and am not sure what I want to build from some scrap metal I have.

I have about 8 inches of 1 1/3 brass bar...

Last post

If you would drill a hole in the side (at the back of the chamber), simply use a smaller inner diameter there.

5 Replies

1604 Views

Last post by psycix
Wed Sep 16, 2009 4:56 am
Cannon energy contest

Last post by psycix
Replies: 65
by Moonbogg » Mon Sep 14, 2009 3:02 am
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OK, Joerg has inspired me with his apocalyptic slingshot of ridiculous power. Lets have a cannon ft-lbs / jules power contest shootout! Of course I...

Last post

Another method of contesting:
-People vote on the cannons (or other devices), this makes the innovative cannons have an advantage over the standard...
65 Replies

18673 Views

Last post by psycix
Wed Sep 16, 2009 4:44 am
Sealing face

Last post by qwerty
Replies: 11
by qwerty » Mon Sep 14, 2009 9:08 am

First post

On my upgraded version of my bb coaxail (which now fires pellets)the rubber sealing face keeps coming of.
Its made of innertube and i epoxy it on...

Last post

yeah i have an inner repair kit ill try that next time it comes of because it working at the moment.

11 Replies

3327 Views

Last post by qwerty
Tue Sep 15, 2009 3:01 am
Cannon #1 - Tactical Interballistic Tennis Ball System

Last post by THUNDERLORD
Replies: 30
by PCGUY » Wed Sep 02, 2009 10:02 pm
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Cannon #1

Tactical Interballistic Tennis Ball System

First Place Winner!

Final Judges Score Chart
-Idea 18.5 /20
-Use of materials 4.7 /5...

Last post

In the voting thread, the builder said a range of 85 yards max.

Oh I could throw probably 3/4 that distance with a tennis ball. Still pretty...
30 Replies

42829 Views

Last post by THUNDERLORD
Mon Sep 14, 2009 7:56 pm
A 1:2 Chronograph experiment for LED/Audio

Last post by boyntonstu
Replies: 2
by boyntonstu » Sun Sep 13, 2009 9:39 am

First post

Make a Y connection to a PC sound board input.

On one side of the Y input a homemade LED chrono.

On the other side a microphone half the distance...

Last post

Perfect!

K.I.S.S.

A mic to verify and to calibrate.

BoyntonStu

2 Replies

1055 Views

Last post by boyntonstu
Mon Sep 14, 2009 3:46 pm
Pressure in a 1lb Oxy cylinder

Last post by Moonbogg
Replies: 19
by jor2daje » Sat Sep 12, 2009 10:37 pm
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At my hardware store I've seen red bottles of oxygen and was wondering what the pressure inside them might be. If it is considerably higher than...

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Yeah it can be dangerous under many circumstances. I am suprisingly comfortable using it with the regulator it came with and at low pressures in the...
19 Replies

4585 Views

Last post by Moonbogg
Mon Sep 14, 2009 1:22 am
How-To: Mod a Blowgun

Last post by THUNDERLORD
Replies: 16
by MrCrowley » Mon Sep 07, 2009 1:29 am
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This is how I mod my blowguns for increased flow.

WARNING: If you mod your blowgun following this tutorial, do not blame me if it leaks. I have done...

Last post

Oh I was under the impression they would be fuel valves only and you'd still have a ball valve after the fuel meter to vent in to the chamber. I have...
16 Replies

9730 Views

Last post by THUNDERLORD
Mon Sep 14, 2009 12:09 am
Cannon #5 - Metered Pilot Isolated Piston Hybrid

Last post by THUNDERLORD
Replies: 12
by PCGUY » Wed Sep 02, 2009 11:55 pm

First post

Cannon #5

MMSIPH-10 MK 1
(Manometrically Metered Pilot Isolated Piston Hybrid )

Final Judges Score Chart
-Idea 5.4 /20
-Use of materials 3.2...

Last post

Well the J shaped nail was also innovative IMO.
IDK how a piloted piston hybrid gets piloted(?)
Seems very innovative pilot on it, Guess I've got...

12 Replies

11572 Views

Last post by THUNDERLORD
Sun Sep 13, 2009 6:43 pm
Cannon #2 - The Challenger

Last post by THUNDERLORD
Replies: 12
by PCGUY » Wed Sep 02, 2009 10:48 pm

First post

Cannon #2

The Challenger

Final Judges Score Chart
-Idea 12 /20
-Use of materials 4.7 /5
-Creativeness 6.6 /10
-Quality of build 4.1 /5...

Last post

Man this one looks very nicely built!!!
And good shooter.
Safety incorporated in design is innovative itself! 8)

12 Replies

12168 Views

Last post by THUNDERLORD
Sun Sep 13, 2009 6:14 pm
GGDT Something strange is happening

Last post by Ragnarok
Replies: 8
by boyntonstu » Sun Sep 13, 2009 10:40 am

First post

The only input difference is the chamber OD.

Am I missing something?

BoyntonStu

Last post

That still sounds low (even without D_Hall's point above). I calculate ~79 grains for a 0.62 marble.

Still, to be sure, I've weighed some of my...

8 Replies

2090 Views

Last post by Ragnarok
Sun Sep 13, 2009 1:02 pm
m1a1 specs

Last post by rey de papa
Replies: 19
by boom shtick » Wed Sep 09, 2009 10:37 am
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hey
I am building am1a1 bazooka and have been looking all over google for its specs and I just can`t find em. Does anyone know of any on the internet...

Last post

holy cow thanks! thats the best Ive seen yet!
RDP added those dimensions himself - doing precisely what I told you to do, working them out from a...
19 Replies

8518 Views

Last post by rey de papa
Sat Sep 12, 2009 7:32 pm
Why is Everyone staring at me???

Last post by jeepkahn
Replies: 13
by jeepkahn » Thu Sep 10, 2009 2:15 pm

First post

:roll:

At least no one cut me off... :twisted:

Seriously though, I made a mount for the Decimater so that I could use DD1's tripod for it... It...

Last post

A follow up, the tripod does help with ease of aim and firing, BUT this thing will still set you down if you aren't leaning into it... The whole...

13 Replies

4261 Views

Last post by jeepkahn
Sat Sep 12, 2009 3:05 pm
Home made infared chronograph How To. Very Acurate

Last post by jimmy101
Replies: 31
by jhalek90 » Wed Sep 09, 2009 6:51 pm
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I have been looking around my town for a place where i can use a chronograph, but have been unable to find one.

The paint ball store wont test...

Last post

One thing though, if you really are sampling at 40+ KHz you will still get a signal for events at greater than 20 KHz.

Only if you bypass the...
31 Replies

20019 Views

Last post by jimmy101
Sat Sep 12, 2009 11:50 am
Improved Tsukiten's Grenade

Last post by noname
Replies: 2
by Dgealy » Thu Sep 10, 2009 8:55 pm

First post

I was looking at some old grenade threads, and I saw Tsukiten's design, and I figured how to make it work. I would change 3 things:

1. Place a...

Last post

I made a fairly successful airsoft grenade which I never used much. I'll try to find the link... Here

Somewhat related I suppose.

2 Replies

1728 Views

Last post by noname
Thu Sep 10, 2009 10:17 pm
Safe pressure testing

Last post by Brian the brain
Replies: 10
by Brian the brain » Wed Sep 09, 2009 4:13 pm

First post

A safe way of pressure testing is hydrotesting...

But I don;t really feel like filling my creations with water and putting the fridgy on 'em to...

Last post

Greasegun...hmmm..we sell those at my dayjob...

That simplifies things...

I mean I knew how to get to where I want, I just wanted to see if there...

10 Replies

2159 Views

Last post by Brian the brain
Thu Sep 10, 2009 1:36 pm
Lucky Me!

Last post by psycix
Replies: 11
by qwerty » Wed Sep 09, 2009 1:22 pm

First post

I was very lucky and got 6 1/4 QEVs of ebay for £7 including postage!
i gave one to my brother and ive got ideas for 3. What do you guys think i...

Last post

So do I ;) But my compressor is a little different from everyone elses.
Then I am curious, what makes your compressor so different?

I have a fridge...

11 Replies

2891 Views

Last post by psycix
Thu Sep 10, 2009 5:26 am
M1A1 Thompson Replica

Last post by POLAND_SPUD
Replies: 21
by john bunsenburner » Sun Sep 06, 2009 12:24 pm
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Well, the titel isn't especially revealing about this topic but I failed to think of a better one, I am happy to edit if someone does.

I have...

Last post

yeah you're right... sorry
21 Replies

5153 Views

Last post by POLAND_SPUD
Wed Sep 09, 2009 3:10 pm
European Chunkin 2009..we went!

Last post by Ragnarok
Replies: 27
by Brian the brain » Mon Sep 07, 2009 7:26 am
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You other Europeans sure missed a great opportunity to get together and talk spud while enjoying one of the best shows on earth!!

Here's a teaser:...

Last post

Rag stated something about if some shooting would be involved he would be more likely to show up...
Did I? I remember saying it would be neat to...
27 Replies

4845 Views

Last post by Ragnarok
Tue Sep 08, 2009 6:39 pm
Post Your Workshop and Shooting Range!

Last post by Willdebeers
Replies: 59
by trae08 » Sun Jun 24, 2007 1:48 pm
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ok well i don't know if this is ever been posted before and if it was it was before i joined but basically you take some pictures of where you build...

Last post

As JSR reccomended me to post here, I will, however dead this is. :D

My lathe:

My bandsaw:

Power Hacksaw:

Milling machine:

40W Laser...
59 Replies

18918 Views

Last post by Willdebeers
Tue Sep 08, 2009 11:20 am
Rifling Machine

Last post by CS
Replies: 4
by CS » Mon Sep 07, 2009 3:37 am

First post

I'm going to build a rifling machine and would like some feed back before I go ahead.

Rifling Design: (PICTURES BELOW)
First off I think the square...

Last post

Actually pulling, slow... it'll be 10TPI so in the test range that is 90-180 seconds per rifling pass. Made a diagram to clarify the overall function...

4 Replies

5681 Views

Last post by CS
Tue Sep 08, 2009 10:17 am
1/4 steel ball shot

Last post by MrCrowley
Replies: 19
by boyntonstu » Fri Sep 04, 2009 10:25 am
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Not using compressed gas, not using a rubber sling shot.

Distance 20 feet.

Can you guess how I launched it?

Last post

Waste of a thread, the OP had their chance.
19 Replies

5865 Views

Last post by MrCrowley
Sat Sep 05, 2009 5:12 pm
New Method of Rifling

Last post by THUNDERLORD
Replies: 25
by Hubb » Fri Aug 28, 2009 3:42 pm
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I was thinking about PVC rifling and a thought occurred to me. Everyone knows that PVC becomes flexible when heated, right? Well, I was thinking that...

Last post

Yeah, from what I've heard from good sources,
Only a fraction of the barrel length needs to be rifled for rifling to work the same. (?)
The rifling...
25 Replies

7010 Views

Last post by THUNDERLORD
Wed Sep 02, 2009 12:58 pm
Low piston pilot valve volume

Last post by Hubb
Replies: 7
by tghhs » Tue Sep 01, 2009 11:50 pm

First post

Hey guys been thinking about this one, as a way to reduce pilot volume for faster opening times. As you see the piston extends out the pack of the T...

Last post

I've never really thought about pilot pressure getting compressed because I figured it couldn't be compressed as it'd be well out of the pilot volume...

7 Replies

3264 Views

Last post by Hubb
Wed Sep 02, 2009 8:01 am

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