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Potato Gun Show

A place to ask general spud cannon related questions.
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Potato Gun Show

Unread postAuthor: Spud Destruction » Tue Jan 31, 2012 8:00 pm

Hey guys me and my friends have been doing a potato gun show for a couple of months now. I don't know what the rules are on posting links here. Just search on Youtube Spud Destruction and you will find it. We made the show for all potato gun enthusiast. We would love all of your inputs as well and suggestions. I'm new to this site but love all the information thats on. The community on here is great.

Second question on the last episode we used the compound rounds from ultimatespud.com and i wanted to thank them so i put the link to there shop on my page but the website is down. Does anyone know why?

Thanks Everyone
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Unread postAuthor: Technician1002 » Tue Jan 31, 2012 8:31 pm

You need more power.. Have you considered a high power metered propane or an air cannon. My avatar is an apple in a collision with a bottle of water.
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Unread postAuthor: mobile chernobyl » Tue Jan 31, 2012 8:37 pm

MOAR POWA!!!! spend some time on this site and you'll understand. that or you'll become a pneubmatic hipster :P
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Unread postAuthor: Spud Destruction » Tue Jan 31, 2012 9:19 pm

Yes we are really considering for season 2 air powered. Any builds you would recommend. We will end this season in 2 more episodes then begin season two with a stronger gun. Thanks guys..
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Unread postAuthor: SpudBlaster15 » Tue Jan 31, 2012 9:22 pm

Spud Destruction wrote:Yes we are really considering for season 2 air powered.


NOOOOOOOOO!!!

Build a propane fueled advanced combustion launcher, then move on to hybrids. Best to just skip the pneubmatic stage altogether.
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Unread postAuthor: Technician1002 » Tue Jan 31, 2012 9:48 pm

He is in the suburbs. Noise could be a factor.
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Unread postAuthor: D_Hall » Tue Jan 31, 2012 10:46 pm

SpudBlaster15 wrote:Build a propane fueled advanced combustion launcher, then move on to hybrids. Best to just skip the pneubmatic stage altogether.


Lol....

I always advocate skipping the spray and pray AND the propane fueled advanced combustions... START with pneumatic then move on to hybrid.
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Unread postAuthor: mobile chernobyl » Wed Feb 01, 2012 12:14 am

Spud Destruction wrote:Yes we are really considering for season 2 air powered. Any builds you would recommend. We will end this season in 2 more episodes then begin season two with a stronger gun. Thanks guys..


I like that you have an emphasis on the video side of things. Too bad you aren't a neighbor of a spudfile'er (not that we know of at least) cause most of us could use a funny and or entertaining side to our creations.

I have a pretty big air cannon that I don't use anymore, but it would be perfect for your show if you had a bigger yard.

[youtube]http://www.youtube.com/watch?v=B2LyPH_EZgg[/youtube]
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Unread postAuthor: MrCrowley » Wed Feb 01, 2012 12:39 am

Ah, I assume you're the guy (or one of the guys) I sent a message to recently on YouTube? I just sent you another one telling you to come to Spudfiles, guess you already found it :wink:

Welcome.
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Re: Potato Gun Show

Unread postAuthor: jackssmirkingrevenge » Wed Feb 01, 2012 12:49 am

Spud Destruction wrote:Hey guys me and my friends have been doing a potato gun show for a couple of months now. I don't know what the rules are on posting links here. Just search on Youtube Spud Destruction and you will find it. We made the show for all potato gun enthusiast. We would love all of your inputs as well and suggestions. I'm new to this site but love all the information thats on. The community on here is great.


Not a bad effort, but I concur with the general opinion, you need more power :D

You might want to consider things like BB machineguns too that will certainly make for awesome footage.

Second question on the last episode we used the compound rounds from ultimatespud.com and i wanted to thank them so i put the link to there shop on my page but the website is down. Does anyone know why?


So it is, hmmm... jagerbond and USGF are both members of this forum, perhaps they can shed some light on the matter?
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Unread postAuthor: Spud Destruction » Wed Feb 01, 2012 1:13 am

This is why i joined this site you guys are already giving me good advice :lol: I talked it over with one of the guys at dinner tonight and we are going to go with pneumatic... We are leaning towards metal piping. For the valve we want something quick, so my brother who used to lower and put air bags on cars can help me with that quick release.. We want to keep it basic but consistant. And yes we live in the city actually i'm in a "ok" part of town hahahah. Meaning the neighbors are used to loud bangs. But i don't want to be over the top loud... Tomorrow when i get off work i will definatley scan through this site for plans on a simple but effective pneumatic guns. Thanks again guys.. And yes McCrowley i just got your youtube message :o

That 10 gallon cannon is awesome :P

Edited by jrrdw, double post.
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Unread postAuthor: jackssmirkingrevenge » Wed Feb 01, 2012 1:52 am

A large bore pneumatic will get expensive quickly, especially made out of metal.

The basic questions you need to answer for effective guidelines are the following, you've already hinted at some of them:

- what do you want to fire and how fast, both in terms of velocity and in terms of rate of fire?

- what's your budget?

- do you have any size or noise restrictions?

- what technical abilities and facilities do you have at your disposal?

- what materials can you afford and work with?
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Unread postAuthor: Spud Destruction » Wed Feb 01, 2012 9:39 am

Maybe it's not pneumatic then when im thinking. Ill do some more research when i get home. I would like to power up between 100 to 120psi or air, in a chamber then just simply quick release that into the barrel to expel the potato or the 2 inch uhwm compound rounds i purchased from ultimatespudgun. something quick simple and effective. Also do i need more psi than 120? What is a nice destructive range when dealing with air?
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Unread postAuthor: jackssmirkingrevenge » Wed Feb 01, 2012 9:53 am

If you want a high performance big bore without breaking the bank, consider something like this design:

Image

You can make the chamber and barrel out of the same type of tubing, all you need is the chamber capped on one end with a valve of some sort in order to supply the air, and on the other end you attach a union.

All you have to do is sandwich a disk of frangible material (foil etc.) and when a certain pressure is reached in the chamber, BOOM!, Robert's your mother's brother.

It is a bit of a pain in the arse having to install new burst disks for every shot but really this is the only way to get the best performance out of a pneumatic on a very low budget.

At 100-150 psi with a long enough chamber and barrel, performance should be quite impressive.
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Unread postAuthor: Technician1002 » Wed Feb 01, 2012 11:28 am

There are a couple of important considerations when choosing a valve. Granted an air valve from a car lift kit is quick, but they generally suffer from size.

They simply can't dump the high volume of air fast enough. Do they make them in sizes over 1 inch?

Look first into large orifice valves such as large irrigation valves. You want one that can open all the way in under 20 ms. Use a valve at least 3/4 the size of your barrel for best results. In other words a 1/2 inch sprinkler valve on a two inch barrel will eject a spud, but it won't be impressive.

Read the stickies and look in the wiki. Consider building a piston valve if you have the skill.

Testing a 2 inch piston valve against a 1.5 inch sprinkler valve side by side with 3 inch barrels shows a huge power gap between them. Both cannons are about 3 gallon in size.
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