I've decided what to do with the 8"

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
User avatar
noname
First Sergeant 4
First Sergeant 4
Posts: 2698
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA

Sat Aug 19, 2006 10:38 pm

Jeez you're lucky. 10' of 1 1/2" pressure rated is like 8 bucks or something. 2" is $2.25 a foot or 10 feet 10 bucks. I'm not even sure if I can get pressure rated 4". One store has only 10 foot lengths that are pressure rated and only go up to 2", and the other store I go to has 20 foot lengths of up to 4" and 10 foot lengths up to 2" but the 10 foot lengths aren't pressure rated and I'm not sure if the 20 foot lengths are.
User avatar
MrCrowley
Moderator
Moderator
Posts: 10078
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Been thanked: 3 times

Sat Aug 19, 2006 10:55 pm

noname wrote:To everyone posting on this topic, I'm using a DIAPHRAGM!
i knew that but we were trying to find things that could be used for a piston because you said you couldnt find anything thats the reason why your going diaphragm
User avatar
noname
First Sergeant 4
First Sergeant 4
Posts: 2698
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA

Sat Aug 19, 2006 11:10 pm

Salad's idea for a piston would be like 10 pounds and a diaphragm is just a lot simpler anyways.
User avatar
frankrede
Sergeant Major 2
Sergeant Major 2
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Has thanked: 1 time
Been thanked: 1 time

Fri Oct 13, 2006 1:06 am

Sorry to kick the topic but i deem it neccessary.
Was this cannon ever built?
Current project: Afghanistan deployment
User avatar
mark.f
Sergeant Major 4
Sergeant Major 4
Eritrea
Posts: 3638
Joined: Sat May 06, 2006 11:18 am
Location: The Big Steezy
Has thanked: 58 times
Been thanked: 61 times
Contact:

Donating Members

Fri Oct 13, 2006 8:12 am

It takes a while to build something like this. Give him some slack.
User avatar
frankrede
Sergeant Major 2
Sergeant Major 2
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Has thanked: 1 time
Been thanked: 1 time

Fri Oct 13, 2006 5:44 pm

Its been a couple of months, I just want to know on its progress
Current project: Afghanistan deployment
User avatar
noname
First Sergeant 4
First Sergeant 4
Posts: 2698
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA

Sat Oct 14, 2006 7:03 pm

Nothing at all has happened. I might just leave the pipe sit there another couple months, who knows? I just really don't have enough money to use on that right now and I don't have an air compressor, so pumping it up with a bike pump would be kind of tedious.
User avatar
SquishY
Specialist
Specialist
Posts: 155
Joined: Tue Feb 07, 2006 6:37 pm
Contact:

Sat Oct 14, 2006 11:53 pm

Kind of tedious, more like a day job. A shop here sells outside diameter caps to match pipes, being that a 4" cap will fit perfectly into a 4" pipe. this could be a piston. Sorry for the suggestion of something other than a diaphram but this would be quite the perfect idea.
Whoever appeals to the law against his fellow man is either a fool or a coward.
Whoever cannot take care of themself without that law is both.
For a wounded man shall say to his assailant,
'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
User avatar
killagorrila99
Sergeant 2
Sergeant 2
Posts: 1100
Joined: Tue Jul 25, 2006 2:35 am
Location: Australia.

Sat Oct 14, 2006 11:55 pm

Lol More like a 30 day job to get it to 1psi.
"I'm sorry, Mr.Bush cant come to the phone right now, He's playing cleudo with Mr. Cheney And he has him in the Cupboard with a broom stick" -White house receptionist.
User avatar
SquishY
Specialist
Specialist
Posts: 155
Joined: Tue Feb 07, 2006 6:37 pm
Contact:

Sun Oct 15, 2006 3:13 am

LoL, I like my baby one, 10 pumps and its at 45psi :P
Whoever appeals to the law against his fellow man is either a fool or a coward.
Whoever cannot take care of themself without that law is both.
For a wounded man shall say to his assailant,
'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
User avatar
noname
First Sergeant 4
First Sergeant 4
Posts: 2698
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA

Sun Oct 15, 2006 11:05 am

All my other guns take like 15 pumps to get to 80, but a 20 foot long piece of 8" pipe? That would take just too long. Or I could buy a Co2 regulator, but it would probably use a whole 20 oz tank to get it to 40 psi.
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Sun Oct 15, 2006 12:07 pm

my bb rifle goes to 200-210 psi with 15 pumps.
Persistence is a measure of faith in yourself
User avatar
noname
First Sergeant 4
First Sergeant 4
Posts: 2698
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA

Sun Oct 15, 2006 5:55 pm

That's because it shoots BBs. If your trying to shoot some 4" fruit with your fatty cannon it takes a few more than 15-20. :lol:
pyromanic13
Corporal 5
Corporal 5
Posts: 913
Joined: Wed Oct 19, 2005 7:54 pm

Sun Oct 15, 2006 8:23 pm

you could use a nerf ball for a piston
Movie dialogue: "The good die first."
Tom: "But most of us are morally ambiguous, which explains our random dying
patterns."
User avatar
SquishY
Specialist
Specialist
Posts: 155
Joined: Tue Feb 07, 2006 6:37 pm
Contact:

Sun Oct 15, 2006 9:05 pm

I doubt a Nerf ball would be rigid enough to hold any signifigant(sp) ammount of pressure.
Whoever appeals to the law against his fellow man is either a fool or a coward.
Whoever cannot take care of themself without that law is both.
For a wounded man shall say to his assailant,
'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
Post Reply