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Cannon as senior project. Info, Ideas, Suggestions?

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: inonickname » Sat Jun 06, 2009 11:55 pm

Inappropriate thunderlord.

Try looking through McMaster for things such as barrels, valves and pressure reservoirs. They have a large selection of raw materials.
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Unread postAuthor: dirker88 » Sun Jun 07, 2009 12:11 am

It is ok for someone to machine components and partially assemble my cannon(the things that i don't have the machinery to do myself) as long as it was built under my design and i have proof that it was. And i am going to try to start this project as early as i can. If anyone can help me with design and machining(i have lots of design ideas) just send me a pm. Note that i will not need help with the latter for a while.
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Unread postAuthor: inonickname » Sun Jun 07, 2009 12:14 am

You might find somebody to do it but be aware you will need solid plans for them to machine off or make cad's.

Everything needs to be covered in them but you need to do much more research
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Unread postAuthor: dirker88 » Sun Jun 07, 2009 12:19 am

inonickname wrote:You might find somebody to do it but be aware you will need solid plans for them to machine off or make cad's.

Everything needs to be covered in them but you need to do much more research


That will actually be a large part of the project diagrams specifications and such i spent most of the day researching and came up with many ideas.
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Unread postAuthor: jaythedogg » Sun Jun 07, 2009 12:49 am

Hey man, got some must reads for you.

First, how Piston valves work with interactive animations:

http://www.spudfiles.com/forums/piston-valves-explained-visually-t8157.html

Second, sprinkler valves & a pdf on how they work:

http://www.spudfiles.com/forums/the-sprinkler-valve-pdf-file-t16786.html

Third, a fellow named Gippeto (a friend of mine) has built two amazingly powerful higher pressure builds that do have insane potential, definitely inspiring:

http://www.spudfiles.com/forums/high-pressure-co-axial-updated-02-11-08-t12803.html
http://www.spudfiles.com/forums/piston-in-copper-and-brass-updated-05-03-08-damage-pics-t13478.html

Hope these help. I think the piston valves will clear alot up for you & provided you do your research before just yelling for help, the community here will be very accommodating.

(This is my first post, but I have been secretly spying & reading these spud files for quite some time now!)

-Jay
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Unread postAuthor: jackssmirkingrevenge » Sun Jun 07, 2009 8:29 am

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Unread postAuthor: THUNDERLORD » Sun Jun 07, 2009 10:59 am

Inappropriate thunderlord....

wow thunderlord.... that is way inappropriate....



Well it was inappropriate then.
Atleast I got a "Wow" though! :P (Plus it was "politically incorrect" considering all going on in "US history" 8))
I was on a bus and a girl had her hair covered, but all tight clothes (Who's looking at her hair?) and that came to mind as a YMBASI was all.

The part about buying one, I mentioned because it's the only use of the thread other than a major "spoonfeeding" session.
The rest was serious,good reply IMO. 8)
EDIT: It must've been good, I got 5 spud bux. :P
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Unread postAuthor: dirker88 » Sun Jun 07, 2009 3:03 pm

Heres an idea a coffee can sized chamber of aluminum with a 2 inch diameter hole there is a piston that seals the chamber when the piston goes back the air is realeased. So the valve and the chamber is a single unit. If you dont understand imagine pulling a plug in a bathtub.
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Unread postAuthor: jackssmirkingrevenge » Sun Jun 07, 2009 4:36 pm

dirker88 wrote:If you dont understand imagine pulling a plug in a bathtub.


Something likethis?
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Unread postAuthor: dirker88 » Sun Jun 07, 2009 8:37 pm

jackssmirkingrevenge wrote:
dirker88 wrote:If you dont understand imagine pulling a plug in a bathtub.


Something likethis?


yes some thing extremely similar to the one shown but being actuated by a pneumatic piston for the fastest opening speed possible.
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Unread postAuthor: Technician1002 » Sun Jun 07, 2009 9:23 pm

dirker88 wrote:
jackssmirkingrevenge wrote:
dirker88 wrote:If you dont understand imagine pulling a plug in a bathtub.


Something likethis?


yes some thing extremely similar to the one shown but being actuated by a pneumatic piston for the fastest opening speed possible.


That one is pretty fast. The initial opening is by impact, much like a pool cue striking a cue ball. After that the rest of the opening is finished by the full chamber pressure on the face of the piston. They don't get much faster than that.
Pneumatic operation would most likely be slower.
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Unread postAuthor: dirker88 » Mon Jun 08, 2009 6:02 pm

Technician1002 wrote:
dirker88 wrote:
jackssmirkingrevenge wrote:
dirker88 wrote:If you dont understand imagine pulling a plug in a bathtub.


Something likethis?


yes some thing extremely similar to the one shown but being actuated by a pneumatic piston for the fastest opening speed possible.


That one is pretty fast. The initial opening is by impact, much like a pool cue striking a cue ball. After that the rest of the opening is finished by the full chamber pressure on the face of the piston. They don't get much faster than that.
Pneumatic operation would most likely be slower.


Yes but i am figuring out a way to open the valve by a button or a trigger so i dont have to open it manually.
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Unread postAuthor: MountainousDew » Mon Jun 08, 2009 7:16 pm

dirker88 wrote:Yes but i am figuring out a way to open the valve by a button or a trigger so i dont have to open it manually.

You could make a spring-loaded hammer to push back the pin, opening the piston. I hope you understand... If not, I'll draw up a diagram.
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Unread postAuthor: dirker88 » Mon Jun 08, 2009 7:23 pm

MountainousDew wrote:
dirker88 wrote:Yes but i am figuring out a way to open the valve by a button or a trigger so i dont have to open it manually.

You could make a spring-loaded hammer to push back the pin, opening the piston. I hope you understand... If not, I'll draw up a diagram.



I think i understand like a pinball machine plunger? but that would only close the valve.
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Unread postAuthor: MountainousDew » Mon Jun 08, 2009 7:25 pm

dirker88 wrote:
MountainousDew wrote:
dirker88 wrote:Yes but i am figuring out a way to open the valve by a button or a trigger so i dont have to open it manually.

You could make a spring-loaded hammer to push back the pin, opening the piston. I hope you understand... If not, I'll draw up a diagram.



I think i understand like a pinball machine plunger? but that would only close the valve.

you're right about it being like a pinball plunger, but you have it in the wrong place...
Give me a moment, and I'll draw up a diagram.
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