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2-liter bottles

Posted: Sat Dec 09, 2006 9:19 pm
by falcone
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

Posted: Sat Dec 09, 2006 9:30 pm
by Deko
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

Posted: Sat Dec 09, 2006 9:53 pm
by Bluetooth
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.

Posted: Sat Dec 09, 2006 10:07 pm
by falcone
ok thanks we may just make it to shoot regular bottles if we cant find valve of one big enough for 2-liters

Posted: Sat Dec 09, 2006 10:13 pm
by Scope
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

Posted: Sat Dec 09, 2006 10:13 pm
by MisterSteve124
It wouldn't be 6" maybe 4" just measure a 2 liter bottle.

Posted: Sun Dec 10, 2006 10:02 am
by falcone
thanks scope that vid helps alot 8)

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

Posted: Sun Dec 10, 2006 10:16 am
by Velocity
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?

Posted: Sun Dec 10, 2006 12:37 pm
by boilingleadbath
Do you have any idea how much recoil a 2-liter bottle launcher has?

Loads, as our freind DR <a href="http://forums.spudtech.com/topic.asp?TO ... relates</a> 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.

Posted: Sun Dec 10, 2006 6:40 pm
by djt
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.

Posted: Sun Dec 10, 2006 7:00 pm
by Flying_Salt
falcone wrote:
EDIT: you said supah valves are expensive, how much are they?
Look around. They cost $115.

Posted: Thu Jan 18, 2007 1:37 am
by akaddis
hehe fill up the 2 liter bottle with water..or better yet...sand...rocks ouch...

Posted: Thu Jan 18, 2007 2:35 am
by Insomniac
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.

Posted: Sat Jan 20, 2007 12:32 am
by explsvcookie257
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: 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.