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Mitcho's old idea revamped.... (Now with damage pics)

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: spud yeti » Mon Jul 02, 2007 7:43 am

LOL, but its only 15:40 (in SA)! :D
I'll go look for a valve then I guess!
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really good quote/phrase here
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Unread postAuthor: nicbaz » Mon Jul 02, 2007 6:17 pm

what footy teams do u aussies go 4 ???
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Unread postAuthor: Mitchza89 » Mon Jul 02, 2007 6:18 pm

I've always been a Bronco's supporter myself but I follow any of the Queensland teams. :D
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Unread postAuthor: nicbaz » Mon Jul 02, 2007 6:19 pm

What about AFL???
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Unread postAuthor: Mitchza89 » Mon Jul 02, 2007 6:20 pm

I don't watch it all too much but when I do, I've always followed the Lions. Fark they are bad this season!
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Unread postAuthor: nicbaz » Mon Jul 02, 2007 6:27 pm

Not as bad as my team, THE TIGERS !!!!!!!!!!!!!!!! :D
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Unread postAuthor: Mitchza89 » Mon Jul 02, 2007 6:34 pm

I love the Tigers. They have always had so much heart. I always barracks for the underdogs in a match.
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Unread postAuthor: nicbaz » Mon Jul 02, 2007 6:37 pm

Yea they are good wen they win :lol:
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Unread postAuthor: nicbaz » Tue Jul 03, 2007 4:37 am

hey guys iv had alot of troble getting the ball valve to connect to the bottle so wat could i do... When i file the thread down on the bottle and put tape on it it connnects but has a slight leak!

Would i be better to use Poly as my chamber, like a 1' 20cm piece?

I could only get a plastic ball valve, ($25!!!) and it dosn't cut a thread!

CYA NICBAZ
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Unread postAuthor: Mitchza89 » Tue Jul 03, 2007 4:44 am

Thats the problem mate. Its a plastic ball valve. you NEED metal otherwise the the thread wont be cut in the bottle. If you can get a poly chamber then go for it!
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Unread postAuthor: nicbaz » Tue Jul 03, 2007 4:45 am

how much pressure can poly take?? Do u know
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Unread postAuthor: Mitchza89 » Tue Jul 03, 2007 4:47 am

Come to think of it. You will need a large piece of poly...Like 40mm but I dont think it comes in that size... Dang... Hmm...

Poly can take a hell of alot of pressure. around 500psi
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Unread postAuthor: nicbaz » Tue Jul 03, 2007 4:49 am

you mean large as in long or, diameter

i saw a 20cm piece of 1' stuff
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Unread postAuthor: Mitchza89 » Tue Jul 03, 2007 4:52 am

Large diameter. You need a decent size chamber or your not gonna get very much power at all. the 20cm of 1' would be good for like...a 20cm or less sized barrel.
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Unread postAuthor: nicbaz » Tue Jul 03, 2007 4:58 am

kk gotcha.....
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