SpudFiles

Alright, i pretty much know almost nothing about pneumatic guns so im going to ask a few questions. first, here's a diagram of the gun i plan to make.


(the picture doesn't show up very well so please click on it to see a full sized image)(also, it is not drawn to scale but is pretty close)

1. what kind of valve(i dont know the correct term) do i need at point 1 to let air out of the chamber?

2. what kind of valve do i need at point 2 to put air into the chamber?

3. will this gun work?(are the sizes of pipes good?)

keep in mind, this gun is going to be for shooting carrots

im not going to answer this, u really need to do research before askin these really stupid questions

fine

i just wanted input from some people who have experience

use a ball valve (crappy performance) or a modded sprinkler valve (check the how to section, better performace). u can use a schrader valve from an inertube or go to the auto parts store boys and ask for one. you might want to use a larger diameter pipe for the pressure chamber. seriosly though, you should be able to find all you need to know from this site and google.
have fun dont die
The Indian

I think your thinking of a coaxile, Try a piston valve.