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PVC .VS. ABS (combustion cannons)

A place to ask general spud cannon related questions.
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What kind of material for my spray and pray?

ABS (thich,heavy black plastic)
4
80%
PVC (extremely light,cheap,and soft plastic)
1
20%
Other (please fully indicate in comments)
0
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Total votes : 5
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PVC .VS. ABS (combustion cannons)

Unread postAuthor: qwerty* » Wed Aug 17, 2011 3:32 am

Is there any chance of my pvc pipe failing or busting apart on my spray and pray? I have been told by other cannon users, that I should trash my half assembled combustion cannon and use some abs pipe instead.
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Unread postAuthor: Willdebeers » Wed Aug 17, 2011 4:04 am

Don't listen to them. Peak pressures on a spray and pray are ~60psi.

That is far too low to cause any burst.
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Unread postAuthor: jackssmirkingrevenge » Wed Aug 17, 2011 4:06 am

Willdebeers wrote:That is far too low to cause any burst.


True, but improperly glued fittings or unrated threaded sections are still liable to be blown off though, it should still be carefully put together and not taken lightly.
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Unread postAuthor: nathanhd123 » Wed Aug 17, 2011 5:06 am

Like JSR says make sure you glue all of the fittings properly together. This means making sure you clean the pipes, use primer and then the solvent weld. If you do it right and make sure you use pressure rated pipe and fittings you wont have a problem.
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Unread postAuthor: jsefcik » Wed Aug 17, 2011 8:59 am

You will be fine, as long as you built it properly! :D
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Unread postAuthor: mattyzip77 » Wed Aug 17, 2011 11:11 am

I would go with regular p v c cuz its cheaper, meaning costs less. Make sure you use primer and glue correctly. All of my combustions work great, and even have dwv bell reducers, which in my opinion is fine on a combustion, however others will say it isnt. Its all in the build my friend!!! 8)
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Unread postAuthor: saefroch » Thu Aug 18, 2011 11:07 am

DWV is usually fine on a spray 'n' pray.
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Unread postAuthor: Moonbogg » Thu Aug 18, 2011 2:12 pm

Cell core ABS. I believe in it and it believes in me.
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Unread postAuthor: qwerty* » Fri Aug 19, 2011 1:31 am

@Willdebeers 60 psi? That sounds kinda low are you sure thats it?
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Unread postAuthor: MrCrowley » Fri Aug 19, 2011 1:36 am

It's probably more like 40PSI depending on your fuel. Using deodorant for fuel and spraying it in by hand will probably generate low pressures like that.
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