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PAC WithOutLoss

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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Unread postAuthor: Petitlu » Sat Feb 04, 2012 6:45 am

it worked well!

yes solidworks
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Unread postAuthor: sharpshooter11000 » Sat Feb 04, 2012 7:45 am

Wow, you're great with SolidWorks! Did you use the revolved boss/base tool?
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Unread postAuthor: Petitlu » Sat Feb 04, 2012 7:51 am

yes for o-ring
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Unread postAuthor: smirpab » Sat Feb 04, 2012 7:57 am

Hi Sharpshooter 11000,

As for O-rings, I used the tool "Boss / Base with revolution."
And for "Gorges", I used the tool "Material removal with revolution."

That is, if you have other questions for the modeling does not hesitate.
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Unread postAuthor: Petitlu » Wed Feb 08, 2012 10:07 am

Hello!
I just made a shot at 60bar - 870psi-and with the short barrel!
Good result!

[youtube]http://www.youtube.com/watch?v=7yQT-VXFyUs[/youtube]

Compilation and comparison:

[youtube]http://www.youtube.com/watch?v=Yyskx4RSEhg[/youtube]
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Unread postAuthor: Petitlu » Wed Feb 08, 2012 1:09 pm

Image
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Unread postAuthor: Petitlu » Thu Feb 16, 2012 3:59 pm

hello!
after the success of Withoutloss, I want to do the same but in auto, I have schematics but I want it looks like an AS50 but I do not have plans, you know where I can find?
thank you!
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Unread postAuthor: jackssmirkingrevenge » Thu Feb 16, 2012 4:39 pm

there are plenty of 3d models out there:

http://www.markverkerk.nl/index.php/201 ... onal-as50/

http://www.the3dstudio.com/product_deta ... uct=346113

how do you plan on making it auto/semi though? Surely you can only make it manually operated bolt action.

(great videos on the last post btw, kudos!)
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Unread postAuthor: Petitlu » Thu Feb 16, 2012 4:50 pm

are plans to buy ...
you have patterns with dimensions?

Here are the full auto diagram
I begin construction

Image

Image
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Unread postAuthor: jackssmirkingrevenge » Thu Feb 16, 2012 5:26 pm

A little complex but I can see it working as drawn, you basically have to alternate the process of feeding a projectile and filling the chamber.

If might be feasible to include an electric element as well and have a solenoid feeding the projectile.
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Unread postAuthor: Petitlu » Thu Feb 16, 2012 5:39 pm

I thought of a solenoid but I do not want any part electric, no batteries ...

the prototype one :

Image

two :
Image
Pop-off:
Image

magazine :

Image
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Unread postAuthor: Gun Freak » Thu Feb 16, 2012 6:49 pm

Damn son, you don't waste any time! :D
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Unread postAuthor: al-xg » Thu Feb 16, 2012 7:58 pm

The main problem I can see will be that the pop-off valve may re-seat before the air ram has fully retracted and the next projectile entered the breach.
I guess that could be fixed with a check valve in parallel with a flow restriction to try and trap air in the pop-off valve giving more time for projectile loading before it re-seats. What's a little bit more complexity at this point ? ;)

Petitlu is great, give him a crazy drawing and he actually goes off and makes it work, then puts high pressure in it :D
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Unread postAuthor: Petitlu » Fri Feb 17, 2012 1:25 am

:mrgreen:

Al-xg helps me a lot in this project, it's normal it was he who pushed me to do! :wink:

I'm thinking about restricting the pop off ...
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Unread postAuthor: jackssmirkingrevenge » Fri Feb 17, 2012 1:29 am

al-xg wrote:Petitlu is great, give him a crazy drawing and he actually goes off and makes it work, then puts high pressure in it :D


Spudfiles needs more people like him :D
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