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Pressure rated DWV?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Unread postAuthor: spudthug » Wed Jun 27, 2007 4:39 pm

do you know how much a metal 4" cannon would weigh??

i am not going to build a smaller cannon..well i am but i already put 50 dollars into this cannon! im going to finish it..
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: Modderxtrordanare » Wed Jun 27, 2007 4:40 pm

spudthug wrote:do you know how much a metal 4" cannon would weigh??

i am not going to build a smaller cannon..well i am but i already put 50 dollars into this cannon! im going to finish it..


If I could lift it, then you should have no problem. Work out a little? :?:
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Unread postAuthor: spudthug » Wed Jun 27, 2007 4:46 pm

i do not just want to lift it.. i want it to be easily portable and below 10 pounds... a 4 inch peice of metal 4 feet long alone is going to weigh 20 pounds!
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Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: iPaintball » Wed Jun 27, 2007 4:58 pm

That guy at the hardware store has no idea what he is talking about. "Yep, these 4" DWV fittings right here can easily hold 400 psi..." Definately!!!
You're gonna have to do some shopping to find pressure rated 4" fittings. I'm pretty sure Ace Hardware sells pressure rated fittings of that size, n e way, I know Home Depot selly rated 4" pipe in 2 foot sections, but I'm not sure about 5 or 10 foot sections... Good luck finding everything you need! I can't wait to see this puppy whaen it's done! :D
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Unread postAuthor: spudthug » Wed Jun 27, 2007 5:02 pm

yea..i checked ace.. they do not have tees, or female/male adapters, or elbows, or 4x2 reducers....the only pressure rated thing they have is the cap..
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Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: Gepard » Wed Jun 27, 2007 5:07 pm

Spudthug, lol what exactly have you bought? You imply you've nearly finished it in your sig.....

:D

Michael
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Unread postAuthor: spudthug » Wed Jun 27, 2007 5:14 pm

it says half done..ill have to change that heh.. umm.. well i have my bumper done, and my sealing face, and umm...some other things...hehe i have my pilot valve, my barrels, my fill/psi guage.. i have all of the pipe of rthe chamber and the piston. i have the piston...all i need is 4 inch things...
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Unread postAuthor: sandman » Wed Jun 27, 2007 5:43 pm

i do believe that 400 psi is BS
my 3" Sch 80 Pressure rated PVC pipe is only rated to 370 psi
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Unread postAuthor: Flying_Salt » Wed Jun 27, 2007 5:52 pm

Most mid-size pipes that say dwv are pressure rated. I have some 3'' pipe that has dwv and pw on it. I've used it a lot and it works fine.
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Unread postAuthor: spudthug » Wed Jun 27, 2007 6:14 pm

no u guys stop mixing up fittings with pipe..i know most dwv pipe is rated i need to know if the fittings are..not pipe!
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Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: Fnord » Wed Jun 27, 2007 6:28 pm

If you can, try to measure the volume of pw and unrated dwv pipe via water displacement and compare the weight to get density figures.
Cellcore should be lighter due to the fact that it's foam.
Of couse, you would probably attract attention by carrying a bucket of water and a scale into the hardware store. Unless you live in new york.

OR

You could just buy a fitting, fill it up to 400psi, then take it back and yell at the guy after it explodes.
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Unread postAuthor: Kenny_McCormic » Wed Jun 27, 2007 6:39 pm

spudthug wrote:
and ur supposed to sand the pipe, clean it, prime it, then glue it :wink:
your not suposed to sand the pipe retard
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Unread postAuthor: Modderxtrordanare » Wed Jun 27, 2007 7:38 pm

Kenny_McCormic wrote:
spudthug wrote:
and ur supposed to sand the pipe, clean it, prime it, then glue it :wink:
your not suposed to sand the pipe retard


+1

spudthug wrote:i do not just want to lift it.. i want it to be easily portable and below 10 pounds... a 4 inch peice of metal 4 feet long alone is going to weigh 20 pounds!


Put it on a stand. Or if 4 feet weighs 20 lbs, cut it down to a 1 foot chamber with an appropriatly sized barrel.

A four foot chamber isn't that portable, even if its PVC. Kind of unwieldly if you ask me, even if its an over under type cannon.
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Unread postAuthor: spudthug » Wed Jun 27, 2007 7:57 pm

your not suposed to sand the pipe retard


umm you can to make it rougher and therefore able to grab better...im an asshole..
i do not just want to lift it.. i want it to be easily portable and below 10 pounds... a 4 inch peice of metal 4 feet long alone is going to weigh 20 pounds!



Put it on a stand. Or if 4 feet weighs 20 lbs, cut it down to a 1 foot chamber with an appropriatly sized barrel.

A four foot chamber isn't that portable, even if its PVC. Kind of unwieldly if you ask me, even if its an over under type cannon.


your an idiot..if i put it on a stand it will weigh more and be even harder to hold...

umm no..i do not want a 1 foot chamber.. i have 3 ten foot barrels already and the whole gun planned out.. i want a big gun.. dont post in my threads anymore because u think ur all mighty and tough but your a dickhead who is a big idiot with like 2 guns!

a 4 foot chamber is definately portable...

you get around with your four foot stomache :wink:

and mods please dont lock this thread i didnt start the fight jsut do something to not let them post here i need help not arguments or dickheads ruining my ambition...
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Last edited by spudthug on Thu Jun 28, 2007 1:52 pm, edited 1 time in total.
4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: praetorian91 » Wed Jun 27, 2007 8:02 pm

Spudthug, here is my suggestion:

I would hold off on the fittings. Purchase them from McMaster, which will tell you all the stats about what you are buying. I would rather wait a few days than feel uncertain about the pipe I just bought. I've bought numerous times from Mcmaster, and beleive me, its not as hard to navigate the site as it might seem.

If a fitting says DWV on it, I steer clear. No matter if some guy tells me it can hold X amount of pressure.
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