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Thick Needle through Quarter?!?

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: VH_man » Sun Sep 16, 2007 7:08 am

i just did this with a nail dart......

pretty awsome. i wear the quarter on a laynyard now, as the coolest thing ive done with my tater cannon........

i gotta admit, its one way to show people your not kidding about your tater cannon being powerful..........
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Unread postAuthor: frankrede » Sun Sep 16, 2007 4:28 pm

I say busted.
I used 120 psi with a burst disk and I couldn't full penetrate a quarter with a extremely tiny nail using a sabot in a .40 cal barrel.
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Unread postAuthor: VH_man » Sun Sep 16, 2007 4:31 pm

try it with a slightly thicker nail, like a Box nail. they go through like butter............
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Unread postAuthor: Fnord » Sun Sep 16, 2007 4:36 pm

I used 120 psi with a burst disk and I couldn't full penetrate a quarter with a extremely tiny nail using a sabot in a .40 cal barrel.


Nails are really soft, aren't they? I imagine needles are hardened being they don't need to be impact resistant. Maybe a needle works better because it doesn't dull itself on impact.
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Unread postAuthor: jackssmirkingrevenge » Sun Sep 16, 2007 5:02 pm

_Fnord wrote:Nails are really soft, aren't they?


Depends what nails you use, I used a masonry nail in my test, more likely to shatter as opposed to bending which is what softer wood nails do.
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Unread postAuthor: clide » Sun Sep 16, 2007 5:47 pm

frankrede wrote:I say busted.
I used 120 psi with a burst disk and I couldn't full penetrate a quarter with a extremely tiny nail using a sabot in a .40 cal barrel.


I say confirmed or highly plausible. I did it with a medium power launcher with a smaller caliber barrel (.28") and crappy homemade darts. I think you must not be hitting it strait or your nails are too soft. I even almost did it with a normal sized nail, it didn't stick through the quarter, but it left a ~1/8" hole.
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