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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

1577454 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

755452 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

411455 Views

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

Topics

Auto Combustion?

Last post by zvallance1
Replies: 3
by zvallance1 » Wed Apr 26, 2006 3:58 pm

First post

Well i was playing around with my mini combustion earlier (aka 2 inches of 1/2 pvc that i fill with a lighter, and spark with a piezo) and i saw that...

Last post

Wouldn't the burnt gasses interfear with the combustion of the later/next shots?

hmm
prolly right, i guess a nice big chamber fan going nonstop...

3 Replies

2694 Views

Last post by zvallance1
Wed Apr 26, 2006 8:46 pm
New Person Will this work????

Last post by Shrimphead
Replies: 5
by Jammer » Mon Apr 24, 2006 8:55 pm

First post

I hope it does and if not what do I need to do also where should I put the lighter in at??? And I am also going to use Starting fluid is that good? I...

Last post

Actually, you don't want to be glueing your ignitors into a hole in the gun. Instead, put wires on it and then attach those to two electrodes...

5 Replies

4840 Views

Last post by Shrimphead
Wed Apr 26, 2006 6:29 pm
pnumatic preformance

Last post by )DEMON(
Replies: 7
by )DEMON( » Mon Apr 24, 2006 1:35 pm

First post

ok,so if your barrel ,valve and chamber were all linked together with silicon pipe about 9mm thick on the inside would it affect the preformance of...

Last post

valve

7 Replies

2324 Views

Last post by )DEMON(
Wed Apr 26, 2006 8:39 am
BBMG Question

Last post by rna_duelers
Replies: 2
by pneumaNINJA » Tue Apr 25, 2006 4:09 pm

First post

I have seen many pages that cite 40-45 psi as an optimal pressure range. Why is this, and is it a bad idea for me to increase the pressure?

p.s My...

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If you have a smaller tank of compressed air,using a lower pressure extends the life of it but it can still work well.high pressure=morepower and...

2 Replies

1363 Views

Last post by rna_duelers
Wed Apr 26, 2006 5:44 am
Grid spark chamber

Last post by sgort87
Replies: 7
by huse_spud » Sun Apr 23, 2006 8:16 pm

First post

What if you could cover the inside of a combustion chamber with a metallic paint and then etch a grid design or something into the paint? sparks...

Last post

A 100 tiny sparks may be okay for ignition but it sounds unreliable to me. I have found that sparks from a BBQ ignitor that are less than 1/8 rarely...

7 Replies

2448 Views

Last post by sgort87
Wed Apr 26, 2006 1:28 am
Simple BBQ question

Last post by saladtossser
Replies: 2
by iamthewalrus » Sat Mar 25, 2006 8:28 pm

First post

how many spark gaps of about 3/4cm do any of u think one BBQ lighter could make?

Last post

one, period. but thats may be because my lighters suck

2 Replies

1483 Views

Last post by saladtossser
Tue Apr 25, 2006 11:37 pm
2 inch to 2 1/2 inch adapter

Last post by SpudStuff

by SpudStuff » Tue Apr 25, 2006 8:25 pm

Many people have cannons that have 2 inch female of even male adapters for changing barrels. This can create a problem if you want to add a 2 1/2...

0 Replies

4266 Views

Last post by SpudStuff
Tue Apr 25, 2006 8:25 pm
air compressor tank sizes

Last post by WOW!!
Replies: 3
by laz91 » Tue Oct 04, 2005 1:54 pm

First post

what's the differance in tank size for an air compressor. how many gallons would i need to fill a 6 foot long 3 inch pipe. and how long do they last...

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You want at least a 10gallon beacuse you use constance PSI to run them and this ay the compressor is not all ways running

3 Replies

2062 Views

Last post by WOW!!
Tue Apr 25, 2006 5:35 am
Valve system?

Last post by Benny
Replies: 7
by RedCore » Sun Oct 02, 2005 10:50 pm

First post

What is the best valve system to use? I'v built several potato luanchers already and i'm wanting to upgrade to a pneumatic cannon.

I'm basically...

Last post

I wouldnt recomend makeing a piston valve for your first cannon because they are hard to make and a selenoid would be much easier.
I recomend a 1in...

7 Replies

4157 Views

Last post by Benny
Tue Apr 25, 2006 2:50 am
question

Last post by Benny
Replies: 4
by Benny » Mon Apr 24, 2006 6:04 pm

First post

can you glue sch80 to sch40? with normal primer/cement? thanks. :D

Last post

Common sence plays a big role in this one :shock: :!: jees, what did i do, i was just wondering because the pipe is a loose fit in the coupler. :x

4 Replies

2302 Views

Last post by Benny
Tue Apr 25, 2006 2:45 am
Triggered Burst Disk 2

Last post by FiveseveN
Replies: 5
by Atlantis » Mon Apr 24, 2006 4:56 pm

First post

I had an other idea of how to trigger a burst disk. I was looking at a pen and i realised, What if I use this concept to pop a burst disk? Basically,...

Last post

If I were to make a burst disk pneumatic, I'd put an electromagnet (like the solenoid in sprinkler valves) in the chamber, that when powered would...

5 Replies

3736 Views

Last post by FiveseveN
Mon Apr 24, 2006 11:07 pm
Explosion Protection?

Last post by saladtossser
Replies: 10
by Urban Ninja » Mon Apr 24, 2006 3:38 am

First post

I am trying to find a way of protecting my self if my cannon explodes. Even though It is pressure rated and built very well I want to leave no errors...

Last post

maybe the best solution is a good homemade pressure relief valve

10 Replies

3423 Views

Last post by saladtossser
Mon Apr 24, 2006 9:17 pm
fire extinguisher valve

Last post by Brian the brain
Replies: 5
by djt » Fri Apr 21, 2006 9:34 pm

First post

I have seen nailguns like this one

that use a little valve thing thats for an air compressor to release the pressure. i was thinking that a fire...

Last post

I've got a skiff a 3000 by anics but he was asking about a fire extinguisher valve.

5 Replies

2482 Views

Last post by Brian the brain
Mon Apr 24, 2006 5:01 pm
My mini Hybrid

Last post by Shrimphead
Replies: 12
by WOW!! » Sun Apr 23, 2006 6:56 pm

First post

Here is my mini hybrid, I wil have more pics but right now it is a wrok in progress. The whole thing is about 9 long with 1 steel pipe. It has a...

Last post

Actually a 2x mix only needs 14.7 psi, because the normal atmospheric pressure is 14.7. (14.7+14.7=29.4 psi)

12 Replies

7363 Views

Last post by Shrimphead
Mon Apr 24, 2006 3:30 pm
metering hybrids

Last post by WOW!!
Replies: 32
by WOW!! » Sat Apr 15, 2006 10:29 pm
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iam makeing a supersmall hybrid like spudinator and i was wondering how do you caculate the mix? it is 6 CI very small, and the pipe is rated and 400...

Last post

I got everything dont just wateing for the stun gun and the check valve and PSIG.
32 Replies

13645 Views

Last post by WOW!!
Mon Apr 24, 2006 3:07 pm
Cheaper Stun Guns

Last post by Ballad_Black
Replies: 10
by Ballad_Black » Sat Apr 22, 2006 5:17 pm

First post

I payed 40 bucks for a 300k volt Stun gun, which broke today after only 1 week of use. Made me sick. It made sure it shocked the hell out of me...

Last post

Well, i've thought of doing ym own ignition bow when I actually get another gun, but every gun i've found it does'nt un screw. You have to break the...

10 Replies

4042 Views

Last post by Ballad_Black
Mon Apr 24, 2006 1:08 pm
Over and Under Combustion?

Last post by sgort87
Replies: 13
by brumby » Mon Apr 03, 2006 11:40 pm

First post

I was wondering if you could make an over and under Combustion?

would it be the same power as a normal one

Last post

Damn. I already voted...

13 Replies

4223 Views

Last post by sgort87
Mon Apr 24, 2006 11:21 am
Pumpkin Launcher?

Last post by nicholai
Replies: 33
by removed » Tue Mar 21, 2006 2:47 am
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Me and a coupla friends thought it'd be interesting to take potato launching to the next level. On my friends farm he has large drain piping that...

Last post

i use the forked looking solderless terminals so u can slide them out from under the electrodes (unlike the ring terminals)

i use velcro tape to...
33 Replies

14573 Views

Last post by nicholai
Mon Apr 24, 2006 8:56 am
CO2 capsule launcher

Last post by Brian the brain
Replies: 24
by Brian the brain » Wed Apr 19, 2006 4:53 pm
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This idea came to me a long time ago.It's simply a tube with an endcap and a dart arrow-tip to pierce the back end of the 12 gram capsule.( all metal...

Last post

I can probably seal the firing pin side with some inner bike tube or something.
Okay...as soon as I find a barrel ( no don't recommend american sizes...
24 Replies

12189 Views

Last post by Brian the brain
Sun Apr 23, 2006 11:36 pm
regulator

Last post by spudshot
Replies: 12
by iamthewalrus » Sun May 22, 2005 8:49 pm

First post

is there a certain type of regulator i need to use for a propane injection or do i just use a air regulator that has a gauge on it?

Last post

this thread is almost a year old....

12 Replies

3897 Views

Last post by spudshot
Sun Apr 23, 2006 7:11 pm
BBMG Air Tank Idea

Last post by SpudStuff
Replies: 11
by pneumaNINJA » Wed Apr 19, 2006 2:33 pm

First post

I have been brainstorming to try to find a way to make my BBMG more portable, so I drew up a basic sketch of a possible solution. It uses a small...

Last post

airsoft would be a bad idea. use a large propane tank from a grill. they are rated to 200 psi and have 3/4 inch ntp connection on the top for the...

11 Replies

5532 Views

Last post by SpudStuff
Sun Apr 23, 2006 5:41 pm
How far has someone shot a golf ball via a pneumatic cannon

Last post by boilingleadbath
Replies: 6
by 357Wood » Sat Apr 22, 2006 9:56 pm

First post

I'm building my second golf ball cannon. My first one (Two 3 ft x 2 PVC chambers dumping through a single 1 sprinkler valve into 3 ft of Schedule 80...

Last post

Pimpmann, the GGDT's flight simulator does account for drag. It's pretty much worthless if you install a hop-up device however, as it doesn't account...

6 Replies

2882 Views

Last post by boilingleadbath
Sun Apr 23, 2006 3:24 pm
Stun Gun wireing

Last post by WOW!!
Replies: 10
by WOW!! » Sat Apr 22, 2006 1:44 pm

First post

What is the best type of wire to use on a stun gun? I would use the TV fly back wires but I dont not have a old TV to use. Do you think that 8 gague...

Last post

The whole this is 9 long and 1 in diamter, its a mini hybrid.Iam going to use a spark plug so i can ground the pipe and attach he wire t the plug.

10 Replies

2917 Views

Last post by WOW!!
Sun Apr 23, 2006 11:57 am
Burst Disks

Last post by Rambo
Replies: 9
by Atlantis » Sat Apr 22, 2006 7:36 pm

First post

I need to know what burst disks are generally made out of

Alluminum Foil, Newspaper,.....That's all I've heard of.

Last post

I think that it is better to use weaker burst discs and more times the mix then tough burst discs, twin spark and the other extras.

9 Replies

2805 Views

Last post by Rambo
Sun Apr 23, 2006 8:32 am
Sch 14 PP pipe pressure rating

Last post by boilingleadbath
Replies: 5
by shockwave » Fri Apr 21, 2006 4:51 pm

First post

Here where I live the most common type of plastic pipe is PP (polypropylene) sch 14, 50mm I.D (about 2 ) with wall thickness of 2mm. (thats 50% of...

Last post

Well, checked on harvel.com, and found that PVC sdr 13.5 has a pressure rating of 315 psi.
The tensile strength of PP is 5,000 PSI, and PVC is 7,300...

5 Replies

2477 Views

Last post by boilingleadbath
Sat Apr 22, 2006 5:24 pm

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