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What mine can do!!

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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What mine can do!!

Unread postAuthor: Bubba05 » Wed Mar 21, 2007 9:19 am

Hey there. I started building cannons bout 6 moths ago experamenting with different types and the most bang for my buck came from a PVC T section with a gasmate ingnition system sealed with silicone. this is what it dose.
Mind u we have our own testing range. we get an average shot of 600m with onions 8-900m with potatos and 1km with tooheys extra dry bottles. and up to 1.2kms with tennis balls!!!
Pics of what sorta damage this one can do..
Hope u like the pics!
Bubba
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TED bottel on fridge door at 10m
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tennnis ball on fridge door at 10m
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Unread postAuthor: jrrdw » Wed Mar 21, 2007 9:35 am

Bubba, where's the pics of your cannon? Thats one heck of a whop for a tennis ball to do that to a fridge door, ouch! thats smarts!! You said it has a ignition system??? that would make it a combustion, your in the pneumatic section, you should move it to the combustion section, be prepaired to hear that like 10 more times in the following post to come, unless you move it there quickly. Welcome to Spudfiles.
P.S. -- We love to see video's of cannon's in action!
Heres mine in action to start you off -- The Basterd !!!
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Unread postAuthor: Bubba05 » Wed Mar 21, 2007 9:48 am

sorry bout that ill post over in combustion next time sorry guys. How do i move it???? heres MR Kabooom!
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Unread postAuthor: ShowNoMercy » Wed Mar 21, 2007 11:06 am

That can throw a tennis ball over a kilometer in distance? I am somewhat doubtfull of that.
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Unread postAuthor: spudthug » Wed Mar 21, 2007 12:11 pm

yea no offense but that cannon kinda looks like.... well lets not say.... there are some propane injected cannons with fans and everything...and they dont get that far....
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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: ShowNoMercy » Wed Mar 21, 2007 12:18 pm

Was that distance an estimate? or did you really measure it out? and if you did measure it out how did you manage to do that? A kilmeter is a long ways to walk.....
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Unread postAuthor: Pete Zaria » Wed Mar 21, 2007 12:40 pm

@Bubba05,
Welcome to the forums. Seems like some pretty nice damage out of that thing, but I have to agree with these guys - unless you actually measured your 800-900 meter / 1km distances, I don't believe them. For a reasonably simple combustion gun to achieve those distances under normal circumstances seems nearly impossible. Maybe if you were on the top of a tall hill, aiming out at a 45' angle, with weighted tennis balls....

So did you measure, or is that an estimate? Nobody will be mad at you if you estimated and exaggerated...

Other than that, good work. Stick around, read up. This is an addictive hobby. Before you know it you'll have a garage full of these things...

Peace,
Pete Zaria.

PS - my 250ci chamber propane injected combustion with a 10' home-made golf ball barrel (2" cut lengthwise sleeved in 2") can just barely clear a quarter mile (400m) with a golf ball. For comparison.
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Last edited by Pete Zaria on Wed Mar 21, 2007 12:51 pm, edited 1 time in total.
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Unread postAuthor: CpTn_lAw » Wed Mar 21, 2007 12:40 pm

with my pneumatic at 20 bars, and a 30grams glass marble, out of a 2 meters long 24mm barrel, i can shoot 800 meters, so please tell me, how a combustion generating 40 psi and of that SIZE can throw something a lot less dense much further?
Man,i create a gun that produces 10 times your pressure, with an overrall better projectile, so how could you post these false results? Did you expect us to believe that?

Anyways, welcome to the spudding comunity, but look around, you'll se no canons get sweated and no builder get insulted by making a normal canon.
Most of 'em are congratulated for their contribution. If you like the contests, and the game "who's got the biggest?", then play the official spudfiles contest and win a prize...
Have a ong and fun time here :rr:
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Unread postAuthor: deusXmachina » Wed Mar 21, 2007 1:52 pm

CpTn, may I ask how the eff do you find a 24mm marble after firing?

Bubba, just as a note, unless your cannon is absolutely ginourmous, most people on this forum are going to question ranges over 600m, especially with produce. If you've measured it out and it really goes that far, good for you, what methods did you use to measure range?
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"On a scale from 1-10, I hope you fall in front of a bus."

:white stuff pours out of piston: "What is that? It looks like milk."
"....<i>Well...</i> it's not milk."

YAAAAAAAAYYYY WE'RE DOOMED!
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Unread postAuthor: MrCrowley » Wed Mar 21, 2007 2:17 pm

Nice basic simple gun, but that is never going to shoot more then 150m.
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Unread postAuthor: risto » Wed Mar 21, 2007 3:32 pm

how did a tennis ball do THAT? and over 600m? i know you've heard it a lot, but i will shut my mouth if i can get a video of this.
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Unread postAuthor: ShowNoMercy » Wed Mar 21, 2007 3:39 pm

Maybe he fired the gun point blank at the "refrigerator" or maybe its not really a damage picture from his gun..... :?:
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Unread postAuthor: CpTn_lAw » Wed Mar 21, 2007 3:41 pm

lol, at DeusXmachina, we fired 45° from and the long of a river by our houses. The river is 900m lon until it goes to the at 70°. So in fact, we didn't fond the marble. We saw it flop in the water about 8 seconds after the shot, 100 meter before the turn. So it is "approx" 800 meters.
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Unread postAuthor: ShowNoMercy » Wed Mar 21, 2007 3:46 pm

Perhaps it was a fish? or a frog, troll? lol And how big would a splash be from a marble? Just wondering
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Unread postAuthor: CpTn_lAw » Wed Mar 21, 2007 3:54 pm

this was a 30 grams marble, which was going at approx 140 m/s at impact. So my friend Max who was at 700 meters from where i was shooting saw something and heard something in the water, that looked like something falling from very high and very quick, and sounded like something hitting fast the surface. I was able to see a little white column of water from where i was standing.
(we estimated the velocity, the Ymax, the Xmax , C= friction coef. , µ(air) air density; S = perpendicular surface of exposition with our knowledge in basic balistics physics and found some cool results. tht was some time ago, so i doubt i have the piece of paper where we calculated it.)
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