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A place to ask general spud cannon related questions.
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Unread postAuthor: LeMaudit » Thu Apr 16, 2009 3:24 pm

Hi guys,

I'm new here, Google show me the path to this wonderful community 8)

I thought I could say a few words about me. I am an amateur machinist, with a thing for miniature… and cannons. I also have a powerful Diana spring gun.

I'm currently moving my machinist equipment in a new basement (Sherline lathe and mill) and while I am far away for my dear metal chips, I thought maybe my next project would be a handgun using compressed air. I don’t know much about it right now, and I am learning since a few days, reading forums threads and how-to. I may have some strange ideas, because I will certainly attach more importance in the look and small size than power, still I have some hope to make a shiny looking and powerful PCP 6 shooter machined out of brass and aluminum stock. My ultimate goal would be to fire steel darts out of it. Well, that’s the dream ;-)

Surely I'll need to bother a few of you with silly questions in a while! :lol:

I am also a native French language speaker, which explains the weird accent. If you need translation from French forums or websites (and I can see French are also very active), I’ll be glad to help.

Cheers.
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Unread postAuthor: jonnyboy » Thu Apr 16, 2009 3:54 pm

I'm sure you could accomplish some nice things with precision equipment like that. While pcp pressure may be a little high for a beginning gun co2 may be in your reach. Have a look at solars eclipse for some ideas. :wink:
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Unread postAuthor: LeMaudit » Thu Apr 16, 2009 4:45 pm

Is solars eclipse a web site? I cannot find it.
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Unread postAuthor: Hubb » Thu Apr 16, 2009 4:51 pm

LeMaudit wrote:Is solars eclipse a web site? I cannot find it.


http://www.spudfiles.com/forums/eclipse-40mm-semi-auto-t7879.html
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Unread postAuthor: LeMaudit » Thu Apr 16, 2009 4:54 pm

Ah yes! I saw this one, didn't remember the name. My kind of stuff exactly ;-)
Thanks.
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Unread postAuthor: Brian the brain » Thu Apr 16, 2009 4:56 pm

If you want small and compact, You will need high pressure and a hammer valve to achieve multiple shots.

I love compact guns myself:, I've been called a compactness freak before.
I'm Dutch btw, from Les Pays Bas...

http://www.spudfiles.com/forums/pnuzi-u ... 17077.html

Although its a bb machine gun, it's still quite small...

Bienvenue a la forum!!
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: LeMaudit » Thu Apr 16, 2009 5:06 pm

My current idea is to use separate PCP chambers, like an oversized Brocock cartridge :-) I am still working on the numbers, it seems to me that I could reach very high pressure if I keep it small. But what is the minimum volume of air I need to fire some projectile (.177 pellet or bigger), I still have no idea!

Thanks for the welcome, nice looking Uzi gun :-)
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Unread postAuthor: CpTn_lAw » Thu Apr 16, 2009 6:37 pm

Bienvenue le francais!! I'll keep on going in english so that everybody understand. Where 're you from in France? I'm from Val d'Oise!
I'm looking forward to seeing nice cannons from you! Until then , Take Care!

CpTn out.
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Unread postAuthor: LeMaudit » Thu Apr 16, 2009 9:20 pm

I'm from Quebec, Canada :-)
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Unread postAuthor: Gippeto » Thu Apr 16, 2009 9:44 pm

Welcome LeMaudit. :)

There is a handy software tool many around here use, called ggdt (Gas Gun Design Tool). You can use it to model your design and adjust various parameters.

Find it here;

http://www.thehalls-in-bfe.com/GGDT
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Unread postAuthor: jook13 » Thu Apr 16, 2009 10:36 pm

I have always wanted to see a machinist make a semi-auto 50x hybrid bowling ball shooter that is handheld :wink: .
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Unread postAuthor: jackssmirkingrevenge » Fri Apr 17, 2009 12:52 am

jook13 wrote:I have always wanted to see a machinist make a semi-auto 50x hybrid bowling ball shooter that is handheld :wink: .


Only semi? pah...

:D

Welcome to the forum, your countrymen have so far given a very good account of themselves so we expect great things from you ;)
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Unread postAuthor: psycix » Fri Apr 17, 2009 5:18 am

jook13 wrote:I have always wanted to see a machinist make a semi-auto 50x hybrid bowling ball shooter that is handheld :wink: .

Send me the cash and I'll build it for you (yes you can keep the gun once I am done playing) :D


Welcome LeMaudit!
Happy machining n shooting!
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Unread postAuthor: LeMaudit » Fri Apr 17, 2009 7:48 am

jook13 wrote:I have always wanted to see a machinist make a semi-auto 50x hybrid bowling ball shooter that is handheld :wink: .



I'll do my best :lol:

Thanks for the nice welcome guys.
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Unread postAuthor: jimmy101 » Fri Apr 17, 2009 1:16 pm

You might want to consider something like http://www.swanstrom.net/petes/shoot/autobb.htm

Convert the block to say aluminum, turn a nice efficient piston ...
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