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OMEGA Project- underway!

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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OMEGA Project- underway!

Unread postAuthor: PVC Arsenal 17 » Wed Nov 22, 2006 10:42 am

All parts have been ordered- cost is over $250 :shock:
They should be in by the end of the week or by monday.

Here's the list of almost everything, I'm sure someone wants to see it.

1~ 4" Sch 40 PVC Slip Tee
1~ 4" Sch 40 PVC Slip 90 Degree
1~ 4" Sch 40 PVC Slip Cap
1~ 4" Sch 40 PVC Slip x Male Adapter
2~ 4" Sch 40 PVC Slip x Female Adapter
2~ 3" Sch 40 PVC Slip Cap
1~ 3" x 2" Sch 40 PVC Thread x Thread Bushing
2~ 4" x 2" Sch 40 PVC Slip Tee
2~ 2" x Close Sch 80 Nipple
2~ 2" Sch 40 PVC Snap Slip Tee
2~ 2" Sch 40 PVC Slip x Female Adapter
2~ 4" x 3" Sch 40 PVC Spigot x Slip Bushing
1~ 3" Sch 40 PVC Slip x Female
1~ 2" Sch 40 PVC Cross
2~ 2" x 1" Sch 40 PVC Spigot x Slip Bushing
2~ 1" Sch 40 PVC Slip Coupler
2~ 1" Sch 40 PVC Slip Cap
Quick Exhaust Air Valve 3/4" Cylinder/Inlet/Exhaust Pipe
Brass Air Tank Valve 1/8" NPT, 15/16" Overall Length
Low-Pressure Brass Threaded Pipe Fitting 3/4" Male X 1/8" Fem Pipe Sz, Hex Reducing Bushing
Thk-Wall Dark Gray PVC Threaded Pipe Fitting 4" Pipe Size, Hex-Head Hollow Plug, Schedule 80
Miniature Gauge - 5% Full Scale Accuracy 29/32" Dial, 1/8" NPT Center Back, 0 - 160 PSI
Med-Pressure Extruded Brass Thrd Pipe Fitting 1/8" Pipe Size, Cross
Pistol-Grip Blowgun Deluxe Model W/Vinyl Grip & Chrome-Plated Body

And again, this is the diagram: Image

Details about cannon:

- 4" x 48" Chamber - 180 in3 volume
- 2" x 72" barrel
- 3" cap piston valve
- thread-in breech

Future plans:

- Full rotation, up/down tilt mount
- Wheeled cart + 20 gal air tank
- 6" x 48" chamber
- cam-lock breech

*UPDATE* attempted an animation of the breech:
Image
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Last edited by PVC Arsenal 17 on Sat Jan 06, 2007 1:49 pm, edited 9 times in total.

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Unread postAuthor: schmanman » Wed Nov 22, 2006 11:42 am

this is gonna be pretty freaking sweet. :twisted:

have fun, and take pics every step of the way.

EDIT: wait, there's no pipe on that list. :?
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Unread postAuthor: drac » Wed Nov 22, 2006 12:26 pm

It's also in the wrong section. I'm gonna cry now, lol. Moved.
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Unread postAuthor: PVC Arsenal 17 » Wed Nov 22, 2006 12:50 pm

I posted it there because people wanted me to make a build log. As I go on, I'll post pictures there till it's done.

The Pneumatic Cannon Discussion is for discussions and questions.
The showcase is for pictures, which i will posting shortly.

Do what you must, but I've done nothing wrong.
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Unread postAuthor: drac » Wed Nov 22, 2006 1:52 pm

The Showcase is for completed cannons. If you would like to include a build log, keep it in discussion, and then link to it in your completed cannon topic.

Not trying to step on your toes, just trying to enforce the rules. I can move it back if you want.

EDIT: BTW, I love your avatar.
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Unread postAuthor: squeaks » Wed Nov 22, 2006 2:31 pm

I think your calculations are wrong on the chamber volume. The equation for the volume of a cylinder is piR^2*H. The real chamber volume would then be 2^2*3.14*48~604 cubic inches.
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Unread postAuthor: PVC Arsenal 17 » Wed Nov 22, 2006 4:50 pm

I put in the pipe OD and ID into GGDT and that came out so IDK.

Thanks, and there's actually more to that avatar but it's already pushing it with the bad words so I cut that off. http://media.urbandictionary.com/image/ ... -23242.jpg
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Unread postAuthor: drac » Wed Nov 22, 2006 5:06 pm

Yeah, I saw the other part of it, it's my background on my desktop. :P
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Unread postAuthor: judgment_arms » Wed Nov 22, 2006 5:07 pm

HAHAHAHAHAHAHAHAHAHAHA
I like that man I’m going to make it more family friendly. If you want I could find some way to get it on here. the truth must be told!

But more on subject:
That cannon is slicker then lard on ice! Nuff said.
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Unread postAuthor: PVC Arsenal 17 » Wed Nov 22, 2006 8:10 pm

The parts from a mcmaster came a little while ago. pics soon.
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Unread postAuthor: PVC Arsenal 17 » Thu Nov 23, 2006 12:03 pm

*Update 1*

QEV, sch80 plug, guage, blowgun, schrader, bushing, cross, nipple.

Image
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Unread postAuthor: schmanman » Thu Nov 23, 2006 1:24 pm

wow. this gun is going to be very high quality.
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Unread postAuthor: PVC Arsenal 17 » Thu Nov 23, 2006 10:18 pm

yeah...

I still can't figure out how the hell to build the barrel end of the tee.

I look at rmich's americannon and it looks like there's a bushing that the banjo screws into.. but then I know that a length of 3" runs through the middle of the tee to meet the piston.

So how does he manage to get that peice in there and a threaded bushing? I guess he cut off the excess of both but I'm not really sure.





And what's the deal with o-rings.. All I hear is o-rings. What do they do? Where do they go?
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Unread postAuthor: MisterSteve124 » Sun Nov 26, 2006 1:29 am

jw where did u get that blowgun it is awesome. mcmaster?
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Unread postAuthor: PVC Arsenal 17 » Sun Nov 26, 2006 10:54 am

yeah it was mcmaster.
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