2-liter bottles

[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

[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

[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.

[falcone]

ok thanks we may just make it to shoot regular bottles if we cant find valve of one big enough for 2-liters

[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

[MisterSteve124]

It wouldn't be 6" maybe 4" just measure a 2 liter bottle.

[falcone]

thanks scope that vid helps alot 8)

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

[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?

[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.

[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.

[Flying_Salt]

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

Look around. They cost $115.

[akaddis]

hehe fill up the 2 liter bottle with water..or better yet...sand...rocks ouch...

[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.

[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 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.