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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

1125819 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

578815 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

311478 Views

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

Topics

Vacuum cannon

Last post by inonickname
Replies: 14
by Molybdenum » Sun Jun 28, 2009 6:13 pm

First post

I came accross something in the school physics lab that I found intriguing. The vacuum cannon consists of a pipe that contains a projectile, sealed...

Last post

Fridge compressors make a good vacuum I've used them when casting epoxy, they hold the vacuum because of the internal check valve.

Yep.

Clicky.

14 Replies

8470 Views

Last post by inonickname
Fri Jul 03, 2009 8:05 am
Sealing Leaks?

Last post by frozebyte
Replies: 7
by frozebyte » Thu Jul 02, 2009 7:39 am

First post

Hi all,
i apologise if there are already topics on this question, but i couldn't find any in the search results.

My current problem is the sealing...

Last post

Thanks for the replies! i would use o-rings and teflon for most of the joints, and teflon for those that dont fit o-rings.
i tested my spud before...

7 Replies

2812 Views

Last post by frozebyte
Fri Jul 03, 2009 5:35 am
legallity in QLD australia?

Last post by theBOOM
Replies: 3
by sockdog » Wed Jul 01, 2009 6:09 am

First post

I know it's illegal in nsw and vic. but what about qld? please post a link to something confirming illegal/legal if you can

I've used the search...

Last post

Sure thing :wink:

3 Replies

1867 Views

Last post by theBOOM
Wed Jul 01, 2009 6:54 pm
Gatling gun question

Last post by D_Hall
Replies: 10
by spudmanb3 » Mon Jun 29, 2009 11:16 am

First post

I am planing on possibly making a gatling gun and need an idea on how to syncronize the barrels, please don't sugest gears. Any other ideas are...

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I have figured it out, I'll tell you that it will be hand cranked, but I won't give you the details because of the contest.
So you are asking for...

10 Replies

3934 Views

Last post by D_Hall
Tue Jun 30, 2009 10:05 pm
Help With Spud Gun

Last post by Technician1002
Replies: 35
by nomansland » Thu Jun 25, 2009 11:18 am
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Hi Guys. I've created a pneumatic spud gun that fires by electric actuation. The chamber and barrel are made of PVC. The valve is a sprinkler valve....

Last post

Hey Guys. So I am deciding on getting a bigger valve, and since I don't have much time now to try to build my own (as well as the fact that this...
35 Replies

13222 Views

Last post by Technician1002
Tue Jun 30, 2009 11:14 am
HOWTO: Cheap Chronometer

Last post by Technician1002
Replies: 24
by Los Frijoles » Sat Jun 27, 2009 12:58 pm
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I have no idea if that is actually what these things are called, but I made a device for my gun which allows me to see the speed in milliseconds per...

Last post

Well done guys. Works for lead bullets. Thanks for the PDF.
Proof is better than theory any day. :)

On the photo, any OS with screen capture and any...
24 Replies

13769 Views

Last post by Technician1002
Mon Jun 29, 2009 8:11 pm
"Shut-Off Piston" to save air for (semi)auto

Last post by Technician1002
Replies: 21
by psycix » Fri Jan 30, 2009 8:54 am
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I had the idea of simply pilotting a QEV gun with a slide check valve but the major problem is the air usage. Actually, in ALL full or semi auto...

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If you do it like you describe..you get a very weak shot...
The volume will run out of push much earlier.

We intend to benefit from a large chamber...
21 Replies

9108 Views

Last post by Technician1002
Mon Jun 29, 2009 3:44 am
modifying sprinkler valve

Last post by spudtyrrant
Replies: 6
by kthuyen » Sun Jun 28, 2009 6:34 am

First post

I've encountered a problem while modding my sprinkler valve, one of the screws become round and forced me to drill it so that it is in half....

Last post

epoxy putty is your friend it will seal a hole like that just fine wood putty doesn't like 100psi very much lol plus its wood putty

6 Replies

2638 Views

Last post by spudtyrrant
Sun Jun 28, 2009 8:49 am
Tapping 1/4" threads

Last post by inonickname
Replies: 7
by Dave_424 » Sat Jun 27, 2009 7:58 am

First post

I need to tap a 1/4 thread in the end of my hybrid chamber. The correct drill size is 11.8mm but am wondering which drill bit would be best to use:...

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If you have an engineering plastic like delrin then try that. Brass is an easy one, you could also try aluminum as it is a bit soft. Remember the 1/2...

7 Replies

2442 Views

Last post by inonickname
Sat Jun 27, 2009 9:15 am
Blowguns in Australia(Cant find)

Last post by Technician1002
Replies: 24
by Hydra » Sat Mar 29, 2008 2:21 am
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Title says it all. I can't find them, or do they have a different name? I also can't find any correct Sprinkler Valves... this is the one i found, no...

Last post

Repco is an Australian engineering company. Its name is derived from 'Replacement Parts Company', referring to one of its major lines of work.

From...
24 Replies

7315 Views

Last post by Technician1002
Fri Jun 26, 2009 9:08 pm
you might be a spudgunner if

Last post by jrrdw
Replies: 327
by drex » Sat May 31, 2008 3:58 pm
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you might be a spud gunner if you can get to the pluming section of your local hardware store blindfolded.

you might be a spud gunner if you keep...

Last post

Wellllll, this was fun while it lasted, I've heard enough, quite complaining!
327 Replies

106644 Views

Last post by jrrdw
Thu Jun 25, 2009 5:13 pm
Spud Guns in the news

Last post by MountainousDew
Replies: 8
by jagerbond » Tue Jun 23, 2009 9:54 pm

First post

Pretty positive reaction from everyone.

Last post

Wait! Where is the fair going to be?
I want to come and shoot them!

8 Replies

3353 Views

Last post by MountainousDew
Thu Jun 25, 2009 3:15 pm
Drill press technique

Last post by Technician1002
Replies: 26
by daccel » Tue Jun 16, 2009 11:50 pm
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I'm trying to drill a rod out to the shape below, and having trouble keeping the bit perfectly centered on the long one. You can see how far off it...

Last post

How well do you think it would work on a much longer hole? Say a 24 barrel, for discussion's sake. It makes sense to me that the self centering...
26 Replies

14494 Views

Last post by Technician1002
Thu Jun 25, 2009 8:15 am
full auto co2 rifle

Last post by jrrdw
Replies: 12
by maverik94 » Tue Jun 23, 2009 9:43 pm

First post

ok, I am planning a fully automatic 4.5 mm (.177 cal.) co2 bb gun. Here is my rough design.

My biggest question is, would the magazine idea work?...

Last post

maverik94 and THUNDERLORD,

OK, I sent you both PM's, so there shouldn't be any more problems.

12 Replies

5087 Views

Last post by jrrdw
Wed Jun 24, 2009 3:51 pm
Hello and What are some of the good ignition set-ups?

Last post by jimmy101
Replies: 21
by per0xide » Sat Jun 20, 2009 11:44 pm
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Hi, totaly new to the scene, and I am bad at introductions. So... with that all said and done; what are some efficient ignition systems for the...

Last post

Another cheap possibility is to use a 10 Ohm or so 1/4 watt resistor with a small 12V automotive jumper battery. 12V over 10 Ohms is 14.4 watts, the...
21 Replies

5678 Views

Last post by jimmy101
Tue Jun 23, 2009 1:14 pm
Chronometer tested! (New result!)

Last post by jimmy101
Replies: 33
by psycix » Wed Jun 10, 2009 8:59 am
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Using this gun, but with extra 1/4 QEV and a new blowgun, and with some pvc bolted on to prevent rotation:

So I set the chrony up when the rain...

Last post

Vibration through the chrony itself would give a speed of 1300 m/s or more (if this was the thing triggering the sensors).
Not necisarily, it would...
33 Replies

12358 Views

Last post by jimmy101
Mon Jun 22, 2009 1:54 pm
Flaming Targets

Last post by psycix
Replies: 9
by jor2daje » Fri Jun 19, 2009 8:54 pm

First post

First off, sorry if this is against forum rules, I know exploding ammo is and Im not sure about targets. These are fun and easy targets for bb...

Last post

Its cool, and even better, its safe (in terms of exploding targets that is).
Can't the balloon pop when it gets sparked?

9 Replies

4794 Views

Last post by psycix
Mon Jun 22, 2009 5:42 am
Pure OXY propan in cellcore ABS

Last post by geniusbomberman
Replies: 10
by Moonbogg » Thu Jun 11, 2009 3:55 am

First post

Hmm...Looks like it did alright

Last post

I don't think it was that smart to use a balloon as a metering system, those things gradually leak out air.

10 Replies

2962 Views

Last post by geniusbomberman
Sun Jun 21, 2009 12:19 pm
Carbon fiber tubing

Last post by jeepkahn
Replies: 6
by chenslee » Tue Jun 09, 2009 1:53 pm

6 Replies

4152 Views

Last post by jeepkahn
Fri Jun 19, 2009 9:41 am
A way to get McMaster 3D models into Sketchup?

Last post by niglch
Replies: 7
by niglch » Tue Jun 16, 2009 6:16 pm

First post

Does anyone know of a way to import the 3D models available on McMaster.com into google sketchup? The formats available are solidworks (.sldprt),...

Last post

Ok you convinced me :)
Downloading ....

7 Replies

4773 Views

Last post by niglch
Thu Jun 18, 2009 8:44 pm
BFB Idea

Last post by jackssmirkingrevenge
Replies: 15
by MountainousDew » Sun Jun 14, 2009 12:13 am
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This is my Blow Forward Bolt/Breech idea, since I'm only 13 I don't have access to a lot of equipment... So I tried to design this with that in...

Last post

Some similar ideas here .
15 Replies

5137 Views

Last post by jackssmirkingrevenge
Tue Jun 16, 2009 12:09 am
How to make a Advanced Combustion Potato Cannon (Videos) PVC

Last post by Moonbogg
Replies: 18
by TheBuG » Sat Sep 13, 2008 4:00 am
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Hello fellow spudbusters!

Its the fella from

Also know as TheBuG or MushiYoshi from Youtube.

I finally got my act together this week\weekend and...

Last post

Its a nice cannon, but seems like more work than necessary for a combustion with all the screws etc.
18 Replies

36729 Views

Last post by Moonbogg
Mon Jun 15, 2009 7:44 pm
Piston shape

Last post by USGF
Replies: 30
by daccel » Mon Jun 08, 2009 9:07 am
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Going to machine a piston out of 1/2 aluminum rod soon, as pictured, and I'm debating how to shape the head of the piston.

I think if it's flat it...

Last post

daccel, that's what we're talking about. :D Sometimes you wonder if advise is falling on deaf ears. Obviously not. Gents like you make the effort...
30 Replies

8122 Views

Last post by USGF
Mon Jun 15, 2009 4:08 am
Brass Soldering?

Last post by Technician1002
Replies: 8
by skyjive » Sat Jun 13, 2009 9:30 pm

First post

Hi all,

Is it possible to form a secure solder joint between normal copper pipe and the brass tubes found here?

Or more generally, can you...

Last post

Quick thoughts...am I right here, as far as anything that's not potable water supply piping, lead-free solder sucks, no?

Silver brazing solder...

8 Replies

6013 Views

Last post by Technician1002
Sun Jun 14, 2009 12:07 am
PVC...

Last post by Technician1002
Replies: 12
by A WILD TURKEY » Wed Apr 19, 2006 7:55 pm

First post

Hey guys,
I just went to our local supply store and asked about using pvc for a pneumatic potato cannon and they strongly advised me to not use PVC...

Last post

Hey Tech, not sure if you noticed but this thread is 3 years old. I dont think that your input, as great as it is, really matters anymore :roll:

I...

12 Replies

3065 Views

Last post by Technician1002
Fri Jun 12, 2009 7:08 pm

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