Building a spudgun designed to run on unregulated CO2

[Jmmsbnd007]

800 psi. Aluminum/steel. What type of pipe would I need? Where can I find solenoid valves that will work at 800 psi? How would I fill it up without the bike tire thingy popping out?

 

[Evadman]

I would use steel as it is easier to see on an x-ray.

 

[BatmanNate]

Wouldn't that be pretty hard to get a good seal with something like a potato? When I built on I just used PVC, capped one end with a screw cap, drill a couple of drywall screws with 1/8th inch gap and hooked up a BBQ sparker. Ran on hairspray, and worked pretty darn good.

 

[Jmmsbnd007]

Originally posted by: BatmanNate
Wouldn't that be pretty hard to get a good seal with something like a potato? When I built on I just used PVC, capped one end with a screw cap, drill a couple of drywall screws with 1/8th inch gap and hooked up a BBQ sparker. Ran on hairspray, and worked pretty darn good.

No, you knife the edge of the barrel so it automagically chops it to correct size

 

[Jmmsbnd007]

Originally posted by: Evadman
I would use steel as it is easier to see on an x-ray.

I think airline security would notice a huge 8 foot thing in a bag

 

[Evadman]

Originally posted by: BatmanNate
Wouldn't that be pretty hard to get a good seal with something like a potato? When I built on I just used PVC, capped one end with a screw cap, drill a couple of drywall screws with 1/8th inch gap and hooked up a BBQ sparker. Ran on hairspray, and worked pretty darn good.

you use a potato that is larger than the gun, and force it in which cuts off the alrger parts of the potato, and gives a decent seal. I have only made a golf ball cannon. And I mean cannon.

 

[BadNewsBears]

Droooll

 

[Antisocial Virge]

How are you gonna hook up a 800 PSi tank to it? Whats your name again? Want to get the spelling right for the Darwin awards...

 

[Evadman]

Originally posted by: Jmmsbnd007

Originally posted by: Evadman
I would use steel as it is easier to see on an x-ray.

I think airline security would notice a huge 8 foot thing in a bag

I was actually refering to the fact that it would be easier to pick the pieces out of ya, but hey, that works too

Edit: stupid spacebar.

 

[Jmmsbnd007]

Originally posted by: Evadman

Originally posted by: Jmmsbnd007

Originally posted by: Evadman
I would use steel as it is easier to see on an x-ray.

I think airline security would notice a huge 8 foot thing in a bag

I was actually refering to the fact that it would be easier to pick the pieces out of ya, but hey, that works too

Edit: stupid spacebar.

Hmm... 800 psi isn't that bad, if it's safe enough to use on steel hose on a paintball gun, I think it should be fine in a good-thickness pipe...

 

[Antisocial Virge]

Pressure is not needed. You just need volumn. Did you see the pumkinchunkin show the other night? They were throwing 10 pound pumpkins 4000 ft on 175 PSI or less. PSI is just gonna turn the potato to mist.

 

[Jmmsbnd007]

Maybe you're right... water vapor already fills the barrel after a shot at 100 psi, maybe SCH 80 and use 200 psi or so?

 

[PsychoAndy]

Originally posted by: Jmmsbnd007
800 psi. Aluminum/steel. What type of pipe would I need? Where can I find solenoid valves that will work at 800 psi? How would I fill it up without the bike tire thingy popping out?

I REALLY don't think you need 800 PSI. I made a spudgun using compressed air, since CO2 would be harder to use, and from what i've researched on it, 150 PSI would do.

 

[Jmmsbnd007]

Originally posted by: PsychoAndy

Originally posted by: Jmmsbnd007
800 psi. Aluminum/steel. What type of pipe would I need? Where can I find solenoid valves that will work at 800 psi? How would I fill it up without the bike tire thingy popping out?

I REALLY don't think you need 800 PSI. I made a spudgun using compressed air, since CO2 would be harder to use, and from what i've researched on it, 150 PSI would do.

So how would I hit a mile range?

 

[Evadman]

Originally posted by: Jmmsbnd007

Originally posted by: PsychoAndy

Originally posted by: Jmmsbnd007
800 psi. Aluminum/steel. What type of pipe would I need? Where can I find solenoid valves that will work at 800 psi? How would I fill it up without the bike tire thingy popping out?

I REALLY don't think you need 800 PSI. I made a spudgun using compressed air, since CO2 would be harder to use, and from what i've researched on it, 150 PSI would do.

So how would I hit a mile range?

a potato is not going to go a mile. ~400 yards was the max I ever hit with my golf ball cannon, and that was with a solid golf ball. a potato would turn into fine powder.

 

[Jmmsbnd007]

Originally posted by: Evadman

Originally posted by: Jmmsbnd007

Originally posted by: PsychoAndy

Originally posted by: Jmmsbnd007
800 psi. Aluminum/steel. What type of pipe would I need? Where can I find solenoid valves that will work at 800 psi? How would I fill it up without the bike tire thingy popping out?

I REALLY don't think you need 800 PSI. I made a spudgun using compressed air, since CO2 would be harder to use, and from what i've researched on it, 150 PSI would do.

So how would I hit a mile range?

a potato is not going to go a mile. ~400 yards was the max I ever hit with my golf ball cannon, and that was with a solid golf ball. a potato would turn into fine powder.

Well if they can send a 10 lbs pumpkin 4/5ths of a mile with just 175 psi...

 

[Anubis]

you can make one out of PVC that operates at like 100 PSI from a bike pump that will shoot a spud a great distance.

if you gonna throw 800PSI at it. id say go with steel

just make one that runs on butane and propane. seeing teh muzzel flash at night is teh best part

 

[Evadman]

check this out. 20 OZ mountain dew bottle + 90 PSI + 3/4" ply = death
Right click save as.

 

[Jmmsbnd007]

Originally posted by: TheEvil1
you can make one out of PVC that operates at like 100 PSI from a bike pump that will shoot a spud a great distance.

Sigh.
As for the high-volume, I'm guessing I should keep the ratio 1:1 right?

 

[Zebo]

Originally posted by: Antisocial-Virge
How are you gonna hook up a 800 PSi tank to it? Whats your name again? Want to get the spelling right for the Darwin awards...

 

[Anubis]

Originally posted by: Jmmsbnd007

Originally posted by: TheEvil1
you can make one out of PVC that operates at like 100 PSI from a bike pump that will shoot a spud a great distance.

Sigh.
As for the high-volume, I'm guessing I should keep the ratio 1:1 right?

ehh i dont know. ill get back to you on it. a friend of mine last year built one for his freshman physics project. ill ask him

 

[Colt45]

I vote for PVC pipe + ether

 

[Jmmsbnd007]

Originally posted by: Colt45
I vote for PVC pipe + ether

You first.

Oh, and use oxyacetylene too.

 

[Antisocial Virge]

Originally posted by: Jmmsbnd007

Originally posted by: Evadman

Originally posted by: Jmmsbnd007

Originally posted by: PsychoAndy

Originally posted by: Jmmsbnd007
800 psi. Aluminum/steel. What type of pipe would I need? Where can I find solenoid valves that will work at 800 psi? How would I fill it up without the bike tire thingy popping out?

I REALLY don't think you need 800 PSI. I made a spudgun using compressed air, since CO2 would be harder to use, and from what i've researched on it, 150 PSI would do.

So how would I hit a mile range?

a potato is not going to go a mile. ~400 yards was the max I ever hit with my golf ball cannon, and that was with a solid golf ball. a potato would turn into fine powder.

Well if they can send a 10 lbs pumpkin 4/5ths of a mile with just 175 psi...

They also had 500 gallon tanks hooked up to it and probably 60 foot barrels..

 

[Jmmsbnd007]

Originally posted by: Antisocial-Virge

Originally posted by: Jmmsbnd007

Originally posted by: Evadman

Originally posted by: Jmmsbnd007

Originally posted by: PsychoAndy

Originally posted by: Jmmsbnd007
800 psi. Aluminum/steel. What type of pipe would I need? Where can I find solenoid valves that will work at 800 psi? How would I fill it up without the bike tire thingy popping out?

I REALLY don't think you need 800 PSI. I made a spudgun using compressed air, since CO2 would be harder to use, and from what i've researched on it, 150 PSI would do.

So how would I hit a mile range?

a potato is not going to go a mile. ~400 yards was the max I ever hit with my golf ball cannon, and that was with a solid golf ball. a potato would turn into fine powder.

Well if they can send a 10 lbs pumpkin 4/5ths of a mile with just 175 psi...

They also had 500 gallon tanks hooked up to it and probably 60 foot barrels..

That's true.