Pneumatic Cannons

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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

1671604 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
Directional Control Valves (3way valves and stuff like that)

Last post by jpalf1
Replies: 86
by POLAND_SPUD » Sun Mar 07, 2010 1:12 am
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Directional Control Valves, commonly refereed to as 3,4,5 etc. valves or spool/poppet valves etc., can be very useful for spuders.
They can be used...

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very,useful info for a beginner such as myself.The links are great as well.Thankyou.(you won't believe this but as i was reading,my fridge comp...
86 Replies

755834 Views

Last post by jpalf1
Sat Apr 13, 2013 10:53 am
Sprinkler Valve Troubleshooting Guide

Last post by quinn whitsitt
Replies: 64
by noname » Sat Jun 16, 2007 12:15 am
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Sprinkler Valve Troubleshooting

This is a guide to sprinkler valve problems. Before creating a new topic to ask questions on why your valve isn't...

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great job everyone
64 Replies

983322 Views

Last post by quinn whitsitt
Thu Feb 22, 2024 2:18 pm
Piston Valves Explained Visually

Last post by pavina
Replies: 178
by clide » Mon May 14, 2007 11:21 pm
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I had this posted on Spudtech, but I am reposting it here to hopefully help some people out and allow for discussions/updates.

Well I made this...

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Thanks for sharing this! It might also be useful to mention how friction and maintenance can affect performance over time. Looking forward to more...
178 Replies

1166301 Views

Last post by pavina
Fri Sep 27, 2024 4:05 am
"How Much CO2 do I need?"

Last post by choke
Replies: 32
by BC Pneumatics » Sun Apr 01, 2007 9:52 pm
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For all those people out there looking for a rough idea of how much CO2 they will need for a chamber of any given size-
Just multiply the volume of...

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Great piece of software :) I've been kicking numbers round my head for a while now, and wondered if someone here could confirm. I'm filling a 1.5 dia...
32 Replies

466960 Views

Last post by choke
Thu Jul 04, 2013 2:38 pm
Valve Cutaways

Last post by jhalek90
Replies: 8
by PCGUY » Sat Feb 26, 2005 9:10 pm

First post

VALVE CUTAWAY

Provided By - Longshot

These are some pictures of some of the most popular valves used on spud cannons. Only difference is, these...

Last post

Can someone fix the picture links??

8 Replies

131642 Views

Last post by jhalek90
Wed Oct 07, 2009 2:13 pm

Topics

Silicon Rubber Sealant

Last post by EGOed
Replies: 8
by SpudUke5 » Mon Oct 29, 2007 11:01 pm

First post

well i have been searching around the house and i noticed this. It is a Silicon rubber sealant and i have heard that silicon rubber is not a bad...

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Silicone sealant is only used as a sealant for liquid applications and wont work well for high pressure air applications ....It may work ok to seal...

8 Replies

1938 Views

Last post by EGOed
Mon Oct 29, 2007 11:45 pm
Electronic sprinkler valve actuation on large piston valve?

Last post by gwoloshyn
Replies: 6
by gwoloshyn » Mon Oct 29, 2007 9:33 pm

First post

Who here has experience using an electronic sprinkler valve (not modifying it) to use on there large piston? I am planning on making a 2 1/2 inch...

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Yeah I agree with gunner, seems like it would work good. I'm just deciding if I should make it fully pneumatic or add the electronics........

6 Replies

10073 Views

Last post by gwoloshyn
Mon Oct 29, 2007 11:33 pm
GB Co-ax

Last post by noname
Replies: 21
by cwazy1 » Sat Oct 27, 2007 10:20 pm
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So what do you guys think about my new planned cannon??

24 of 4 abs as the chamber.

on the barrel side

4 coupling
4 -3 bushing
3 -1.5 bushing
26...

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Even if the ABS chamber failed, it would not do so in an explosive manner. It would simply rip down the length of the pipe, releasing the pressure...
21 Replies

5194 Views

Last post by noname
Mon Oct 29, 2007 9:45 pm
Pilot Volume vs Piston Weight

Last post by clide
Replies: 23
by goose_man » Thu Oct 25, 2007 12:08 am
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In several topics involving pistons, people often suggest drilling out the back to make the piston lighter and therefore increase performance. One...

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Yeah if the pilot valve remains open the pressurization of the pilot volume by the piston will not occur

It depends on the size of your pilot...
23 Replies

10567 Views

Last post by clide
Mon Oct 29, 2007 7:43 pm
Small coaxial

Last post by rixth
Replies: 65
by rixth » Fri Oct 26, 2007 3:15 am
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Hi guys,

I've modeled this gun in GGDT, and it seems good but I'm not sure.

Please note, the measurements are in metric (meters, grams etc), but I...

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I tried filing the piston to make it fit in the pipe, it does but the seal still ain't flash, plus I have to manually press the piston up against the...
65 Replies

15861 Views

Last post by rixth
Mon Oct 29, 2007 7:25 pm
75mm Piston with 2" Porting

Last post by mtronic
Replies: 26
by MaxuS » Sun Oct 28, 2007 5:06 am
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Hi everyone, this is my very first piston valve, so I thought that I would make something quite powerful as bits and pieces cost the *bomb* over in...

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Thanks :) my problem was the width of the peices I was useing. I'll go back to the drawing board when I finish my new cannon that I'm working on....
26 Replies

13670 Views

Last post by mtronic
Mon Oct 29, 2007 6:44 pm
My first Piston Valve.

Last post by spudgunnerwryyyyy
Replies: 13
by spudgunnerwryyyyy » Mon Oct 01, 2007 11:26 pm

First post

This is my first piston valve, it is in a 2 tee with 1.5 porting. The piston is comprised of 1.5 pipe, 2 cast epoxy segments, foam bumper, rubber...

Last post

now has a piston with o-rings shown here

13 Replies

3286 Views

Last post by spudgunnerwryyyyy
Mon Oct 29, 2007 12:00 am
Pwnany First Cannon

Last post by Lentamentalisk
Replies: 14
by Pwnany » Sun Oct 01, 2006 7:34 am

First post

Here's my first cannon that I made not for looks just for performance and I think its pretty good. It shoots marbles, AA Batteries with a bit of tape...

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please dont kick up 5 month old topics...
look at the last time someone posted, and they were kicking up a 6 month old topic, please let them R.I.P.

14 Replies

9608 Views

Last post by Lentamentalisk
Sun Oct 28, 2007 10:59 pm
My first coaxial build file.

Last post by SpudUke5
Replies: 5
by Tom » Sun Oct 28, 2007 2:58 pm

First post

In this topic I wil show you the progres of my first coaxial gun.
My plan is to make a simple coaxial from (pressure rated) PVC pipe, I´m building...

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You need to grease the piston and the the piston housing. Use white lithium grease, you can buy it from a hardware store. This will make the piston...

5 Replies

2447 Views

Last post by SpudUke5
Sun Oct 28, 2007 9:54 pm
Mini Barrel Sealer

Last post by f.c
Replies: 3
by Vanlandinghale » Sun Oct 28, 2007 12:01 am

First post

While my big cannon project is delayed waiting for parts to ship I thought I'd see if I could make a little one out of spare parts. Here's what I...

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thats almost exactly what i am looking to make.
can you post a more detailed diagram (only because i will have to convert it to cm's)

3 Replies

2310 Views

Last post by f.c
Sun Oct 28, 2007 3:53 pm
My Tennis Ball Pneumatic

Last post by knappengineering
Replies: 31
by Juicey » Wed Apr 25, 2007 1:40 pm
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Well I finally crossed over to the dark side of pneumatic launchers. I have built a few combustions but didn't even know about air cannons until...

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Thats fine, I haven't had any luck with piston valves yet either, but I've seen my neighbor make them so I know its possible. I'm planing on making 2...
31 Replies

15397 Views

Last post by knappengineering
Sun Oct 28, 2007 2:45 pm
Fire Extinguisher Question

Last post by HaiThar
Replies: 12
by dapallox1 » Fri Oct 26, 2007 2:03 pm

First post

Can the valve from fire extinguisher be used on a pneumatic?

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which would mean I can't use it as valve on a pneumatic right?

depends on where it leaks...If it is just straight leaking out of the valve, then...

12 Replies

2997 Views

Last post by HaiThar
Sun Oct 28, 2007 12:18 pm
My very first piston cannon :)

Last post by hyldgaard
Replies: 39
by hyldgaard » Mon Oct 22, 2007 6:29 am
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So, basicly i was inspired by the spudfiles coinchallenge to make a smaller diameter gun than i had tried before, with enough power to punch a dart...

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yea.. you might wanna look into the text abit before posting :wink:
I have allready said a couple of times that it is only a matter of time before...
39 Replies

10224 Views

Last post by hyldgaard
Sun Oct 28, 2007 9:40 am
Cast Pistons with o'ring grooves

Last post by Marco321
Replies: 12
by Novacastrian » Sat Oct 27, 2007 11:15 pm

First post

After trying to figure out a way to make a piston with grooves without the need for machining i came up with the following idea.

What you will need-...

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Yeah, i previously used the putty to make pistons, it was good, no mess lol. What you could do, is get a washer, and put the o-ring around the...

12 Replies

5221 Views

Last post by Marco321
Sun Oct 28, 2007 4:36 am
Darts

Last post by Pyro Ninja
Replies: 6
by Mateo » Sat Oct 27, 2007 11:04 am

First post

i have made a numb er of darts out of nails and electrical tape but the longer ones dont seem to fly very straight. :( please post pics of your darts...

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These are mine I made a while ago, the cones were made of thin cardboard with a nail and some hot glue.

6 Replies

3250 Views

Last post by Pyro Ninja
Sun Oct 28, 2007 1:57 am
What psi should I use?

Last post by DYI
Replies: 14
by Zen/// » Sat Oct 27, 2007 4:01 pm

First post

For a 6mm airsoft sniper rifle.

i have the stock, scope, scope mount, and bipod, all from a telescope kit.
For some reason it's perfect for a sniper...

Last post

It makes me wonder about the intellect of those in power

I haven't wondered about the intellect of those in power for quite a while, I realised...

14 Replies

2774 Views

Last post by DYI
Sat Oct 27, 2007 8:43 pm
could someone please ggdt this for me.

Last post by ALIHISGREAT
Replies: 46
by ALIHISGREAT » Mon Oct 22, 2007 4:11 pm
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i'm building a 6mm sniper and i want to know some performance figuers so i can adapt my design to get the best performance.

a 1/2 qev, 80cm 6mm...

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sorry for kicking up my old topic but could someone please put the same setup through but with a 25cm/30cm chamber at 200 and 250psi thanks.
46 Replies

9595 Views

Last post by ALIHISGREAT
Sat Oct 27, 2007 5:00 pm
submersable speargun

Last post by Necrosis
Replies: 38
by homedepotpro » Thu Jul 19, 2007 3:24 pm
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this gun has spare valve parts from previous guns but new pipe. it is a redesigned model of this:

now it is safer and in my opinion, much cooler...

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*edit* I misunderstood. It was about getting high muzzle velocity but low range and the thing about putting the condom over the barrel.. well it's...
38 Replies

16220 Views

Last post by Necrosis
Sat Oct 27, 2007 3:30 pm
help me with my leak

Last post by bob-a-lu
Replies: 4
by bob-a-lu » Thu Oct 25, 2007 7:57 pm

First post

ok i went to lowes today after school and got all these parts for my paint ball rpg (i will upload pics soon). And when i open the bags and i find...

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actually you guys i solvent welded it and then siliconed over it and then used epoxy so i feel a little safer now. :D

4 Replies

1929 Views

Last post by bob-a-lu
Fri Oct 26, 2007 7:17 pm
Water Balloon launcher

Last post by BigGrib
Replies: 23
by BOMBOMBOMB » Fri Oct 12, 2007 12:46 am
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Ok well i need ideas.... Ideas that can help create a water ballon launcher and a powerfull on. But one of the main problems is that the water...

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I think the main thing is the sabot will be fine but what happens when the balloon leaves the sabot and the water inside is gonna wanna centrifugally...
23 Replies

9914 Views

Last post by BigGrib
Fri Oct 26, 2007 6:14 pm
Pilot Volume - not really variable

Last post by octane89
Replies: 18
by sanaka » Wed Oct 24, 2007 7:29 am
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Hi.

Check out the beautiful gun in this thread:

A comment was made that this gun's performance might be increased by decreasing the pilot...

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Well in some cases, when you decrease the pilot volume, you will limit the travel of a piston. Like in my case with a 3 tee which in turn brings up...
18 Replies

6015 Views

Last post by octane89
Fri Oct 26, 2007 7:43 am
silencers

Last post by ALIHISGREAT
Replies: 35
by Mateo » Wed Oct 24, 2007 9:10 pm
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i am aware that they are illegal in california but what the hell spudguns arnt that far away from being illegal either. but i was wondering a good...

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ok cool i will stick with un-angled holes. and would the holes be better on the top for about 20cm or on the top and bottom for 10cm? i suspect that...
35 Replies

9438 Views

Last post by ALIHISGREAT
Fri Oct 26, 2007 5:10 am
4" Piston ideas

Last post by watto
Replies: 27
by Vanlandinghale » Thu Oct 25, 2007 11:58 am
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I'm making a cannon for my work to shoot small pumpkins (or very large spuds) and I'm having some trouble coming up with what to use for the piston....

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Quick question about piston valves, can they be piloted from only a blowgun? Just connecting a pressure rated pipe to the pilot port, and to a...
27 Replies

7615 Views

Last post by watto
Fri Oct 26, 2007 1:05 am
Pneumatic arrow launcher

Last post by noob of noobs
Replies: 24
by idiotfactory » Tue Oct 23, 2007 5:40 pm
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This is another cannon I build around the same time as the BAAC, it uses an electric sprinkler valve and two push-button switches to trigger it. The...

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I usually use some 1/2 wooden dowel rod.

Um... I don't quite get it. Could you post a picture or something? And I think we'd all still like to see...
24 Replies

11306 Views

Last post by noob of noobs
Thu Oct 25, 2007 10:26 pm
Hello all

Last post by Necronium
Replies: 13
by Necronium » Thu Oct 25, 2007 11:58 am

First post

Hey everyone. Im new here and am thinking of building a pneumatic for the first time. Ive been searching the site gathering info and planning my...

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Yeah, it has been tried. And it has been successful. Go for it. It will make for a nice breech loader. It may not even have to be modified.

Oh yeah,...

13 Replies

2234 Views

Last post by Necronium
Thu Oct 25, 2007 8:37 pm

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