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For all you DWV freaks

A place to ask general spud cannon related questions.
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For all you DWV freaks

Unread postAuthor: jmccalip » Sun May 03, 2009 12:03 am

This is for you.

That's a 6" chamber, and he said he used 90PSI. :shock:

Most of the time 90 psi is more than enough.
Looking at my pic I could easily shoot a spud all the way to the treeline with 90psi.

The highest Ive gotten my gun to was 120 psi and the potato was in pieces before it reached the end of the barrel.

Note: Overall the gun is safe. I insist on wearing a hoody, safety glasses, ear plugs and heavy pants when using it. The shrapnel can hurt.


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Last edited by jmccalip on Sun May 03, 2009 12:07 am, edited 1 time in total.
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Unread postAuthor: inonickname » Sun May 03, 2009 12:07 am

He probably won't hurt himself as that cap will be the first to go, and it will just go downrange.

Still, not good to tempt it.

Edit: unless he's filling it.
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Unread postAuthor: MrCrowley » Sun May 03, 2009 12:28 am

Using it in the snow as well, he is quite the smart spudder :roll:
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Unread postAuthor: jackssmirkingrevenge » Sun May 03, 2009 1:44 am

MrCrowley wrote:Using it in the snow as well, he is quite the smart spudder :roll:


Indeed, a smile is slowly creeping around the edge of Darwin's mouth :D
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Unread postAuthor: SubsonicSpud » Sun May 03, 2009 4:29 am

Too bad it is DWV :evil: , looks nicely constructed.
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Unread postAuthor: Ragnarok » Sun May 03, 2009 7:28 am

I don't know what order he loads and pressurizes it in, but that looks like a recipe for putting a large impact in the top of that van...
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Unread postAuthor: SubsonicSpud » Sun May 03, 2009 7:37 am

Ragnarok wrote:I don't know what order he loads and pressurizes it in, but that looks like a recipe for putting a large impact in the top of that van...


Would not be a great loss, It's just a Jeep. (running for cover now) :D
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Unread postAuthor: sputnick » Sun May 03, 2009 10:08 am

I would normally say dwv is reasonably safe, when in ABS form, but I can not be OK with DWV PVC, something not rated WITH a very violent failure method is not good for anyone...

Only reason I use DWV ABS is because I know that if god forbid... it fails, it will likely not cause my shredded death.
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Unread postAuthor: Carlman » Sun May 03, 2009 10:25 am

where did you find this, he needs to be told guys its downright dangerous
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Unread postAuthor: jmccalip » Sun May 03, 2009 11:33 am

MrCrowley wrote:Using it in the snow as well, he is quite the smart spudder :roll:


I just hope he isn't using C02 to fill it. A lot of those guys use C02 tanks and regulators to fill the tires.




I found it on a Jeep forum I used to frequent. The picture is years old, so it's too late now.
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Unread postAuthor: Davidvaini » Sun May 03, 2009 11:57 am

I personally beleive that the dangers of DWV are overly exaggerated. I also think that the dangers shooting in the winter time is slightly exaggerated.

However, things like: Cleanouts, badly glued pieces, coagulated, etc are where you really need to be concerned.

I have never seen or heard of a properly glued DWV pneumatic cannon blowing up at 90psi. I have seen and heard cases of 200 psi, but that was also a 3 inch cannon. 3 inch pressure rated pipe I wouldnt trust at 200 psi.

Now just because I have not seen or heard of a DWV pneumatic cannons blowing up at 90 psi, it doesn't mean it cant happen. DWV is simply not pressure tested or rated. Since it is not rated, its best just to not use it. Its best to treat it with extreme safety. Taking DWV into the coldness of winter is not extreme safety.
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Unread postAuthor: TurboSuper » Sun May 03, 2009 12:13 pm

Is it just the fittings/cleanout cap that are DWV? The pipe is pressure-rated...
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