Project of a Pneumatic Marble Sniper (Advices/help needed)

[Angel-FR]

Hello,
since it epears to be the best way to make a powerfull sniper im maybe going to make one , my goal is to shot about 250 yards away (with the cannon at 45°) and to be the mots inexpensive...

so i ask for advices about the chamber and cannon size since i dont know at all about pneumatics.

to get the pression in the chamber i was thinking about this
http://www.conrad.fr/webapp/wcs/stores/ ... tId=212740

it would get a pression of 180 psi , that would be enought ?

i hope you will help me since i m stuck ^^

cya , have a good day

[schmanman]

pressson? do you mean pressure? at those pressures, go with a steel piston valve. although, If this is your first cannon, a ball valve may be better.

[Angel-FR]

pressson? do you mean pressure? at those pressures, go with a steel piston valve. although, If this is your first cannon, a ball valve may be better.

sorry for my english... im french ^^

does 180 psi would be enought ?

[schmanman]

oh, sorry. had I known you were from France, I would not have pointed that out.

yes , I think 180-200 psi would be enough.

are you planning on using copper for the barrel and air chambers?

[Angel-FR]

oh, sorry. had I known you were from France, I would not have pointed that out.

yes , I think 180-200 psi would be enough.

are you planning on using copper for the barrel and air chambers?

Dont worry

Copper why not PVC as usual ?

[MrCrowley]

you will need sch80 PVC i believe, and in France it may be called PN18(18 BAR=260psi)



P.S France played really good in the second game against the All Blacks in the rugby last week

[Angel-FR]

ok thanks you all

so if i do a basic gun like that :

chamber => modified orbit valve => barrel

with a 180 psi compressor connected on the chamber

it would work ?
i gonna do some researsh on the forum about the best C:B ratio beceause i dont know for pneumatics...

with the hope i can find these kind of valves here
tomorow i will go to "Castorama" and i will look for 20 bar rated PVC and for a good valves , i will tell you what i plan to buy before i do
thanks again and sorry about being a noob

ps: All Black just f***** our players... we ***** ^^ that's bul****t ^^

[schmanman]

"sorry for being such a noob"? oh, whatever. I doubt I would be doing as good as you if I didn't speak English as my first language.

[MrCrowley]

sprinkler valves can't take 180psi only 145psi.

P.S the second game you guys played better then us even though we won. You has a solid line of defence in the first half.

[Angel-FR]

Ok guys , let go this is a schematic of what i would like to build it was very inspirated by rna_duelers sniper

5cm x 30cm pvc chamber
2 cm x 100cm barrel
on board 12v air compressor 200 psi

say me what you think
cya

[schmanman]

I like it. what is all that stuff on the bottom of the barrel? It looks good, but is it a stock or something?

[Angel-FR]

I like it. what is all that stuff on the bottom of the barrel? It looks good, but is it a stock or something?

the big black thingy ? that's the compressor as writtent on the pict

[Infernal2]

Ah, an onboard compressor. It will be rather heavy. You could perhaps purchase an air compressor motor and wire it to a portable battery system. Same weight but quicker.

[Angel-FR]

Ah, an onboard compressor. It will be rather heavy. You could perhaps purchase an air compressor motor and wire it to a portable battery system. Same weight but quicker.

i know... :/ i will see when i will buy it , if it's too munch heavy i wont take it onboard , but i would really like to have a all in one gun :/

[CpTn_lAw]

You can, just make a project box...you can put the compressor in a back bag. with the hose directly connected to your sniper. Bolt design is much easer with copper....pvc in france is weak, trust me....i'm french too