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spudtech cannons

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: unisonmind » Sun May 11, 2008 2:34 pm

is there anyone on here that got a full cannon ( not just the valve ) from joel??
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Last edited by unisonmind on Mon May 12, 2008 7:03 pm, edited 1 time in total.
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Unread postAuthor: jrrdw » Sun May 11, 2008 2:41 pm

Marty does -- here.
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Last edited by jrrdw on Sun May 11, 2008 7:56 pm, edited 1 time in total.
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Unread postAuthor: unisonmind » Sun May 11, 2008 2:56 pm

thats why i ask -- marty sent me his cannon so i could fix it for him and with the name joel has for him self i did not expect to see DWV parts on it but the Coupler and the bushing are DWV so im asking just to see this is how all of his cannons are made or if its just this one
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Unread postAuthor: jrrdw » Sun May 11, 2008 3:00 pm

Search the archive, I'm sure there is members posted about them there.
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Unread postAuthor: clide » Sun May 11, 2008 3:45 pm

The photos on his site of similar sized launchers all appear to have DWV couplers and bushings as well. You can tell by the length of the coupler.
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Unread postAuthor: STHORNE » Sun May 11, 2008 3:49 pm

wow! I'm really surprised that Joel would use DWV parts on spudguns. Pneumatic ONES!!!!

I thought he was much more professional than that, to guarantee safety and all... of all people....
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Unread postAuthor: D_Hall » Sun May 11, 2008 3:59 pm

STHORNE wrote:wow! I'm really surprised that Joel would use DWV parts on spudguns. Pneumatic ONES!!!!

I thought he was much more professional than that, to guarantee safety and all... of all people....

The man was selling PVC-based pnuematics. That right there tells me he's not exactly professional about all this. The liability he opens himself up for is INSANE. No businessman (ie, professional) with half a brain would open himself up like that.

So no, I'm not surprised.
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Unread postAuthor: PCGUY » Sun May 11, 2008 4:12 pm

Joel did not use DWV parts on pneumatics.

You can not always tell from the length.
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Unread postAuthor: unisonmind » Sun May 11, 2008 4:14 pm

but i can read the parts and it is NSF-dwv
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Unread postAuthor: clide » Sun May 11, 2008 4:20 pm

PCGUY wrote:Joel did not use DWV parts on pneumatics.

You can not always tell from the length.

There is a minimum socket length for them to meet the NSF-pw standard. Most pw fittings are right at that minimum socket length, but I have seen a few fittings with longer sockets. Those couplers are definitely less than that minimum length and therefore not pw.

Edit: PC the guy linked to in the second post sent his gun to unison for repair. He is reading the dwv off the actual gun.
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Last edited by clide on Sun May 11, 2008 4:22 pm, edited 1 time in total.
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Unread postAuthor: PCGUY » Sun May 11, 2008 4:20 pm

unisonmind wrote:but i can read the parts and it is NSF-dwv


In what picture?

That would make me awfully sad to hear that he really did use non-PW parts on pneumatic cannons.
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Unread postAuthor: unisonmind » Sun May 11, 2008 4:23 pm

i have the cannon in my hands
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Unread postAuthor: JDP12 » Sun May 11, 2008 5:41 pm

well thats not good.... but thats why you have it- to fix it. still i am disappointed in that fact that it is DWV.

and i agree with D_Hall about liability
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Unread postAuthor: jrrdw » Sun May 11, 2008 5:44 pm

D_Hall wrote:
STHORNE wrote:wow! I'm really surprised that Joel would use DWV parts on spudguns. Pneumatic ONES!!!!

I thought he was much more professional than that, to guarantee safety and all... of all people....

The man was selling PVC-based pnuematics. That right there tells me he's not exactly professional about all this. The liability he opens himself up for is INSANE. No businessman (ie, professional) with half a brain would open himself up like that.

So no, I'm not surprised.


A proper disclaimer takes care of that.
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Unread postAuthor: JDP12 » Sun May 11, 2008 5:49 pm

meh good point jrrdw.

still i'm disappointed in the DWV.

maybe he ordered them off mcmaster and didn't get the NSF 61 ones by mistake?

i dunno just a thought, because someone told me that the NSF 61 ones are pressure rated
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