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Dam Buster(Contest Applicant)

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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How Good Is The Dam Buster?

Forking Nice
7
54%
Awesome
1
8%
Awesome but needs a better name
1
8%
Good
3
23%
O.K
1
8%
 
Total votes : 13
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Unread postAuthor: MrCrowley » Mon Oct 02, 2006 4:35 am

UPDATE:i finished the spring activated ball valve pics up tomorrow
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Unread postAuthor: PVC Arsenal 17 » Mon Oct 02, 2006 5:43 pm

why did u use a presta valve?
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Unread postAuthor: MrCrowley » Mon Oct 02, 2006 7:13 pm

becuase i couldnt find a threaded schrader and prestas have threads all the way down so i just got an adapter.

UPDATE:Pics and video of spring activated ball valve
Image
The white piece of pipe has holes in it to let the air release as soon as the valve opens
Image
Image

Video:
http://s75.photobucket.com/albums/i290/ ... lValve.flv
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Unread postAuthor: schmanman » Thu Oct 05, 2006 10:42 am

wow, VERY nice. I like the spring activated ball valve, paint,ect. did you tap all those screws? does it leak around there?
EDIT: that reducer on the chamber looks weird. what is that ridge on it for?
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Unread postAuthor: MrCrowley » Thu Oct 05, 2006 2:42 pm

for a start theyre self tapping and i put a neoprene disk thing around the edge to make sure.the end cap and tee are rigid because i couldnt find a 80mm pressure pipe(to join the two on the outside)and i couldnt get a 90-80mm reducer as the tee I.D is 90mm but it slowly turns into 80mm.
so i used a metal grinder :oops: and grinded the crap outta the pipe about 2mm of the 7mm so now the thickness is 5mm and 100mm pipe fits over perfect and becuase its slightly rigid i used that neoprene stuff around the edges.

p.s i like the spring thing as well i doubt it does anything its just way cooler to fire and makes it easier.
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Unread postAuthor: zeigs spud » Thu Oct 05, 2006 2:43 pm

Really nice gun! but your lil preview pic is f*k!ng Huge man! try resizing the image before you put it on there. or is it just meh comp lol?
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Unread postAuthor: MrCrowley » Thu Oct 05, 2006 2:48 pm

its to get your attention :roll: jokes, when i put it in it said it resized it for me ill take it off maybe.
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