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Fnord's Hybrid

Built a hybrid 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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Fnord's Hybrid

Unread postAuthor: Fnord » Sun May 06, 2007 10:18 pm

Fnord's Hybrid

This is a no-burstdisk hybrid which uses a piston and spring to retain pressure. Although it is in an experimental stage, it is still fully functional. Today I did dryfires at 1.5x and 2x mix to make sure everything was working properly.
I am currently making a new piston (the first one was quick and cheap and eventually blew an o-ring) and hope to get it working at 4x over the next few days.

Materials/construction
The chamber is made from 2" sch40 iron (I'm looking to upgrade this). The fittings are steel, iron and brass. It ended up being fairly heavy for its size (probably about 12-15lbs)

The piston is housed inside the brass pipe below the tee and is forced upwards untill it vents out the barrel (it shouldn't be that hard to visualize).

Ignition
The ignition uses a camera flash dumped into an ignition coil to produce around 30kv.
The flashboard and capacitor are contained in the handle and the battery is stored behind the ignition coil.

Fuel
The propane meter is detachable and adapts to anything that has a schrader valve.
This part was a royal pain to construct, as none of the stores around here sell propane tank adaptors. I had to cut apart a broken torch and epoxy the hell out of it to get a proper seal.

Features
Almost everything is detachable, including the barrel, chamber, meter, and spring cap. The cap can be removed and the spring tension ajusted to allow for higher chamber pressures before it vents.

Notes/misc
This is my first hybrid, and was constructed for under $40 USD. It was made mainly from stuff I scavanged.
It looks ghetto, but I feel that a paint job will only make it look worse. I wanted a gun that looked very MacGyver-ish, but still actually looked like a gun. The end result looks very close to the plans I drew up during class (Ill post them eventually).

I feel bad for not being able to give live-fire test results/videos, but my budget money arrived too late and I've only had 4 hours of sleep in the last 2 days due to the large amount of construction and troubleshooting Ive had to do.

Also, I think it needs a name. Feel free to post suggestions.
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Attachments
100_3627.jpg
The spaghetti monster that lurks within the handle.
If you look closely you can see jesus.
100_3769.jpg
The other side. Not much to see here. Just hose clamps.
100_3768.jpg
close up of the middle.
100_3767.jpg
close up of the handle, firing circuit, reg and tee.
100_3766.jpg
ortho view.
100_3765.jpg
Full view. I forgot to put a ruler by it for comparison, but the tank should give you the general idea.
Last edited by Fnord on Sun May 06, 2007 10:24 pm, edited 1 time in total.
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Unread postAuthor: keep_it_real » Sun May 06, 2007 10:21 pm

No way, that's sick. Is the piston in the top part of the Tee that holds the barrel?
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Unread postAuthor: Fnord » Sun May 06, 2007 10:25 pm

Ill post the piston diagram tomorrow, along with my concept drawing.
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Unread postAuthor: frankrede » Sun May 06, 2007 10:29 pm

That may be ghetto but it should make up for in power!
Nice job!
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Unread postAuthor: experament-u2 » Sun May 06, 2007 10:30 pm

that is awsome and in my opinion looks kinda menacing
when its finished it defently needs a paint job to cover the rust
sweet job tho good luck in the comp
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Unread postAuthor: CS » Sun May 06, 2007 10:48 pm

I think I see virgin mary in the wood grain on the second picture.

If it matters, I wouldn't mind seeing this diagram. As to the launcher, it's obviously lacking aesthetically. Besides that I like that you incorporated a fairly new concept. While at first glance all the components appear sprawled, on closer inspection they are fairly compacted.
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Unread postAuthor: ArticWolf » Sun May 06, 2007 10:51 pm

I'll be dogging my cannon but all I can say is D@#$ that thing looks sweet. If you do paint it, use the ceramic paint they use to paint engine block's, you can buy it at auto parts store's and it will cover the pipe nicley. I have a name for it The Steel Bullet I think it fits it good. any way good job keep it up.
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Unread postAuthor: noname » Sun May 06, 2007 10:55 pm

That thing is totally boss sauce! Looks like something BTB would make, if he ever makes a hybrid.
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Unread postAuthor: SpudBlaster15 » Sun May 06, 2007 10:59 pm

pimpmann22 wrote:As to the launcher, it's obviously lacking aesthetically.


Aesthetically lacking? Hell no! This launcher looks awesome! It has so many hoses, valves, gauges, and pipes that it just looks menacing!

I like it, alot.
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Unread postAuthor: goathunter » Sun May 06, 2007 11:03 pm

Good idea Fnord, But it does need streamlining and a paintjob.I'm no expert in hybrids though but it was my first thought.

@pimpman, You must be Catholic. Or special. :idea:
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Unread postAuthor: homedepotpro » Sun May 06, 2007 11:07 pm

Im really interested in the piston diagram, and the performance. what do you shoot
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Unread postAuthor: MrCrowley » Sun May 06, 2007 11:07 pm

pimpmann22 wrote:I think I see virgin mary in the wood grain on the second picture.

If it matters, I wouldn't mind seeing this diagram. As to the launcher, it's obviously lacking aesthetically. Besides that I like that you incorporated a fairly new concept. While at first glance all the components appear sprawled, on closer inspection they are fairly compacted.


Did she have her nose? Last time I saw her(2weeks ago in Rome) a crazy Australian dude had knocked her nose of inside the vatican back in the 80's :P

On another note, nice gun and im glad to see it uses a piston and not the typical burst disk.
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Unread postAuthor: integral » Mon May 07, 2007 12:08 am

Kinda reminds me of the rail guns on the Matrix (the first one). But maybe it wouldn't hurt for a coat of paint, to hide the rust on the threads or maybe a blue propane bottle with a shark's head on the end :D Then again, just looking at it is now will tell anyone that it means business! I needs some vids to show just how hard your baby can punch.
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Unread postAuthor: Killjoy » Mon May 07, 2007 1:00 am

Forget the paint, i love it just the way it is. It looking somewhat ghetto is like... part of its personality.
Its nice to see a real hybrid that actually uses the concept of a piston instead of a burst disk. I've heard the concept discussed before, but never actually seen it implemented.
Nice job.
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Unread postAuthor: iknowmy3tables » Mon May 07, 2007 2:03 pm

that is sick :twisted: , you say it is your first hybrid also, you deserve a good chance at winning
reminds of my contest entry they're both kick ass, made with whatever the hell we could get, your first hybrid my first sprinkler valve pneumatic, you still need a new piston I still need music wire for higher mag capacity
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