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 2-liter bottles « View previous topic :: View next topic » 
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falcone
PostPosted: 12/09/2006 20:19 PM    Post subject: 2-liter bottles Reply with quote

Private
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what size pvc would a 2-liter bottle fit in? and also what kind of valve would be used for a cannon that big? ive seen cannons that big but never knew what kind of valve was used on it

ps. im not making this cannon but i am helping a friend he doesnt have profile on this site but hell probally get one after the cannons built to post pics of it
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Deko
PostPosted: 12/09/2006 20:30 PM    Post subject: Reply with quote

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ive made never a cannon that big or seen 2 liters shot but my geuss would be 6 inches maybe a little more

and i couldnt help you on the valve i dont know what kind would fit a gun of that size
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Bluetooth
PostPosted: 12/09/2006 20:53 PM    Post subject: Reply with quote

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I don't know about 2 liters but normal soda bottles you can look at the Water Dawg. It uses two of Joels Supah valves.
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falcone
PostPosted: 12/09/2006 21:07 PM    Post subject: Reply with quote

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ok thanks we may just make it to shoot regular bottles if we cant find valve of one big enough for 2-liters
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Scope
PostPosted: 12/09/2006 21:13 PM    Post subject: Reply with quote

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You would most likely be best off building your own chamber sealing valve. Theres a really really easy tutorial at bcvids.com

supah valves are really expensive
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MisterSteve124
PostPosted: 12/09/2006 21:13 PM    Post subject: Reply with quote

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It wouldn't be 6" maybe 4" just measure a 2 liter bottle.
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falcone
PostPosted: 12/10/2006 9:02 AM    Post subject: Reply with quote

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thanks scope that vid helps alot Cool

EDIT: you said supah valves are expensive, how much are they?
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Velocity
PostPosted: 12/10/2006 9:16 AM    Post subject: Reply with quote

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2-Liter bottles fit very well in 5" SCH 40 PVC. This pipe size is very rare though; the fittings can be bought off of amazon.com however.

And isnt the valve that is shown on bcvids a barrel sealing one?
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boilingleadbath
PostPosted: 12/10/2006 11:37 AM    Post subject: Reply with quote

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Do you have any idea how much recoil a 2-liter bottle launcher has?

Loads, as our freind DR relates to us.

As I suggested in that thead, I suggest a recoilless design here - but with one change; build the cannon inline.

Such a design (inline) would eliminate the need for any fittings, thus cutting the cost significantly.
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djt
PostPosted: 12/10/2006 17:40 PM    Post subject: Reply with quote

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Howabout just building a gun that shoots cans? It will be cheaper for both cannon, and the ammo, and you will still get a nice exploding effect when the can hits something.
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Flying_Salt
PostPosted: 12/10/2006 18:00 PM    Post subject: Reply with quote

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falcone wrote:


EDIT: you said supah valves are expensive, how much are they?


Look around. They cost $115.
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akaddis
PostPosted: 01/18/2007 0:37 AM    Post subject: Reply with quote

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hehe fill up the 2 liter bottle with water..or better yet...sand...rocks ouch...
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Insomniac
PostPosted: 01/18/2007 1:35 AM    Post subject: Reply with quote

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Why not make it to shoot 600mL bottles? They hold a bit more than cans, and they have a lid so you can drink them then fill them with whatever you like.
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explsvcookie257
PostPosted: 01/19/2007 23:32 PM    Post subject: Reply with quote

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dont fill the bottle up with anything when you shoot it just water because i have a 2 liter bottle rocket launcher that i designed and built and me and my friends decided to put shredded cheese into the bottle Twisted Evil and i made the launcher so that you have to pull down a section of pipe that holds the bottle down and when i pulled it shredded cheese sprayed on my hand and it stung i had like 100 little welts on my hand for a week and i only had pumped it up to 60psi it felt like gettung shot by an air soft gun in the hand 100 times.
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