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LOKI

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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LOKI

Unread postAuthor: loganphyve » Mon Mar 12, 2007 7:03 pm

Here it is, folks. The most recent development from ÜberComputer Studios, Ltd. This is Loki, a self-contained, electrically driven, air-fired, compact and portable air cannon.

It boasts a fully metal construction, with the exception of the air valve, which is PVC. The Barrel Is 36" Long and the unit is approx 50 inches in overall length, making it compact and easy to travel with. The barrel simply threads out for loading and cleaning purposes, and is tightened with the barrel handle (tool less breakdown).

The unit is pressure regulated for accurate and even shots and is reinforced to withstand torsion and shock very well. Not necessary for accuracy, rather ruggedness and field durability.

This Unit also Sports a special flow corrector which was designed to help establish initial projectile movement, resulting in a shorter time to transfer from static friction to dynamic friction. (Greater load acceleration and higher muzzle velocity).

It also features a high-flow Modified Sprinkler Valve, and on-board 12v air compressor. This unit is capable of reaching 200 psi, as tested during the build. It has been pressurized to 110 psi, and does not have a single hiss or slow leak.

*This Runs on a 12v. Car Cigarette Lighter Plug and charges in 30 seconds!

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Attachments
Picture 037.jpg
Cannon And Builder
03-03-07_2318.jpg
Body
02-28-07_2212.jpg
Flow Corrector
02-28-07_2212.jpg (33.44 KiB) Viewed 2386 times
03-03-07_1518.jpg
Initial Fit Test
03-03-07_1518.jpg (39.64 KiB) Viewed 2386 times
03-03-07_2006.jpg
Initial Layout
03-03-07_2006.jpg (37.99 KiB) Viewed 2386 times
Last edited by loganphyve on Tue Dec 02, 2008 5:44 pm, edited 3 times in total.
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Unread postAuthor: Pete Zaria » Mon Mar 12, 2007 7:08 pm

VERY nice design. I've never seen an all-metal gun with on-board compressor before. I'm not sure pressurizing a sprinkler valve to 200psi is a great idea unless it's rated for it - most are rated for 150 tops - though I doubt it'd blow.

I'm impressed. This is a very unique gun. Great design, great build - looks extremely clean and sturdy.

More details on this "flow corrector", please. I assume it goes between the valve and barrel? How does it help to provide better flow? I'd think that anything besides a wide open pipe would just cause air restriction...

Peace,
Pete Zaria.
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Unread postAuthor: sjog » Mon Mar 12, 2007 7:19 pm

One of the cleanest , well thought out launchers I've seen here!!!
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Unread postAuthor: risto » Mon Mar 12, 2007 7:38 pm

it's all metal man! i say dont paint it. leave it in its prime! and major props. she's a beauty!
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Unread postAuthor: Fnord » Mon Mar 12, 2007 9:02 pm

wow. I'm definately going to try the onboard compressor thing over the summer. The only thing I worry about is most people say they die quickly. I've got one thats supposed to go to 250 psi and is smaller than my shoe. Ive never got it past 220 though.
Maybe you could put a couple 6v batteries in series and make it completely mobile. Assuming they put out the amps your compressor requires.
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Unread postAuthor: loganphyve » Mon Mar 12, 2007 9:06 pm

If it dies, I will get a 12v Drill and put a more serious motor on board. Likewise, I will also have a rechargeable battery pack in that case.

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Unread postAuthor: isban » Mon Mar 12, 2007 9:07 pm

That is one sweet cannon. Everything looks so clean and efficient. It definately looks sick enough as it is. How far does it shoot and what do you shoot out of it? I love the cat in the background of the one pic.
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Unread postAuthor: loganphyve » Mon Mar 12, 2007 9:08 pm

It was test fired this afternoon, But i Have no specs as to how far or fast it fires, until the weather gets nice. It does, however, function flawlessly. Fast release. Fired several rounds of potatos. The cat is Oliver. He's my soft and fuzzy buddy.

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Unread postAuthor: experament-u2 » Tue Mar 13, 2007 12:31 am

that is a very impressive gun i like the way its nearly fully mobile and full metal (nearly) i cant wait to see some damage pics get some up wen the weather is better

i think the flow corrector is just a bundle of straws as they make ther air flow straight instead of kinda everywere, they used it on mythbusters for a wind tunnel
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Unread postAuthor: TwitchTheAussie » Tue Mar 13, 2007 1:18 am

Allow me to say holy (bleep). Nice cannon.
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Unread postAuthor: shud_b_rite » Tue Mar 13, 2007 1:52 am

Very nice, the design is awesome, it sort of looks like a hybrid.
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Airbeds... so many different uses
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Unread postAuthor: integral » Tue Mar 13, 2007 2:34 am

:shock:
what are u planning to shoot with that?
nice cannon mate :lol:
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Unread postAuthor: chaos » Tue Mar 13, 2007 2:46 am

ok, HOLY CRAP!! that is awesome man!! realy nice work.

ok 1 question... as experament-u2 kindof said about the flow corrector. but what does it exactly do? and is it worth doing?

peace and once again nice gun
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Unread postAuthor: Insomniac » Tue Mar 13, 2007 4:50 am

I think the flow corrector helps eliminate turbulence in the air stream.
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Unread postAuthor: acoop101 » Tue Mar 13, 2007 9:43 am

I was reading in the thread that loganphyve was pressurizing his cannon to 200 psi. Be careful, don't exceed the rated pressure, while you might be safe for a while you never know. I work in the heavy lift rigging industry out here in california, in this industry the rule is Working Load= 10% of braking load. Air pressure is a powerful thing, just a word of warning.
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