spud guns

[THE HUNTER]

toilet paper cannon!! the ultimate tool for T-P-ing large houses!!

 

[TravisD]

i think PVC is better than abs, pvc u can find out how much pressuse it can take so there u can know ur limmits, and yea pvc is alot more flexable then abs i hear, i know the black pipe looks cool but i dont use it and my fav colour is black lol

 

[TravisD]

with the toilet paper cannon remember the block the hole in the middle of the role some people for get, and if ur really cool poor some fuel onto it and heheheh when the gun fires it catches the toilet paper alight

wait 2nd thought DONT DO THAT

 

[jr dragster T]

Im building a new gun out of PVC. PVC is like 3 times softer and more shock absorbing then ABS. I whent to the local hardware store and looked at some 3" PVS piping and its soft enought to squish with your hand yet it springs back. Seems good to me. Although why is 3" PVC smaller then 3" ABS?

 

[gas hatchet]

Yeah, my brother (the one that made the TP Cannon) worked in Corpus Christi Harbor. He would fire the thing at the Coast Guard Vessel that would come by. They finally got tired of it and went to his place of work and made him cut the cannon up with a torch. I think he also wrapped the TP in newspaper or used the kind that comes wrapped in paper. He said that when he fired the thing next to the large metal building, that he worked out of, it would send ripples down the sheet metal.

I want to get a section of steel pipe that will perfectly fit a tennis ball and make an oxy/acetylene tennis ball cannon. I think a tennis ball would be a perfect projectile:
Uniform in size and mass
They are pre-coated with stuffing material
Shouldn't cause terrible collateral damage
Readily available and hard to trace in a forensics lab

What do y'all think?

 

[Kaptain Krunch]

I met a guy today who made a cannon out of a cardboard tube and coke can, he said it would shoot a soup can out of site, he powered it with propane and oxy/acetylene!

 

[TravisD]

thats sounds a bit unsafe/ fun

 

[THE HUNTER]

thats sounds a bit unsafe/ fun

is there anything worth doing that doesnt?
lol

 

[Carlman]

Hey guys im an active member of spudfiles! I just recived two 3/4" quick exhaust valves in the mail to make a 400psi helium marble gun and use the other to pilot my 3" sprinkler valve rated to 220psi!

The above probobly means nothing to most but makes the spudder cream...

 

[t0x1k]

Im building a new gun out of PVC. PVC is like 3 times softer and more shock absorbing then ABS. I whent to the local hardware store and looked at some 3" PVS piping and its soft enought to squish with your hand yet it springs back. Seems good to me. Although why is 3" PVC smaller then 3" ABS?

You're looking a DWV PVC which is thinner and a different dimension the regular PVC. It's common name is SCH30 PVC or Thinwall. NEVER USED FOR PRESSURE! It's built on the concept of a cylinder is uncrushable when supported all around. It can be buried and support hundreds to thousands of pounds of pressure on it. Used on french drains, sewage, and underground down spout(gutter). The ends are commenly 'belled' so couplings are not needed and give a simpler and easier install.

SCH40 is at least 1/4" thick on 3" and up.
It's the same dimensions as SCH40 steel piping and ABS.

ABS should NEVER be used for pressure! The walls are like foam and are extremely weak. Imagine a sponge formed into a tube. Just look at a cut edge of ABS and you see small pockets like a sponge.

 

[Pellethuntr2]

Amateurs... I have a home made .50 cal airgun with a rifled barrel doing 200fpe on a low fill [800 or so psi straight out of a co2 tank] I am planning on converting it to air and I will get something like 500fpe no that's not fps, its fpe

 

[TravisD]

Amateurs... I have a home made .50 cal airgun with a rifled barrel doing 200fpe on a low fill [800 or so psi straight out of a co2 tank] I am planning on converting it to air and I will get something like 500fpe no that's not fps, its fpe

i wanna see!! and wats fpe?? wats the 'e'

 

[newrider3]

Foot pounds of energy?

 

[Pellethuntr2]

U r right new rider foot pounds of energy...sorry guys no pics camera is broke. you can read some about my projects at airgununiverse.com go to the forum i use the same user name as here... building bigbore airguns is what i do when i'm not making things with motors

 

[ed1380]

id love to built a castleman but i have no machining knowledge

 

[jr dragster T]

You're looking a DWV PVC which is thinner and a different dimension the regular PVC. It's common name is SCH30 PVC or Thinwall. NEVER USED FOR PRESSURE! It's built on the concept of a cylinder is uncrushable when supported all around. It can be buried and support hundreds to thousands of pounds of pressure on it. Used on french drains, sewage, and underground down spout(gutter). The ends are commenly 'belled' so couplings are not needed and give a simpler and easier install.

SCH40 is at least 1/4" thick on 3" and up.
It's the same dimensions as SCH40 steel piping and ABS.

ABS should NEVER be used for pressure! The walls are like foam and are extremely weak. Imagine a sponge formed into a tube. Just look at a cut edge of ABS and you see small pockets like a sponge.

Thanks for the help, Thats why the 3" drain cleanout didnt fit on the 3" pipe. Its only ment to fit on belled ends. So I need thick walled PVC correct?