SpudFiles

i going to try make a piston valve......

i thinking
2 inch tee
1/2 inch ball valve
chamber... i wanna use my old tank
i believe for the piston i going to use 1 and half inch endcap

wat i want to know... if the endcap for the piston is 1 and a half inch

can i use a 1 inch barrel??
or does it have to be smaller

Yes you can use a 1 1/2" end cap piston with a 1 inch barrel.

What matters is the sealing face, or the pipe that the piston seals against when pressure is held in the chamber and pilot area. As long as the outer diameter of the sealing face is smaller than the outer diameter of the piston, it will pilot and air will release out of the barrel.


FIRST POST

lol love the first post
thanks

i heard sometimes it wont work
i going for my very first piston

i have an old c02 tank i use to fill my first one.. could i use that for the chamber on this cannon.. the only way so far i can think of using this is hose clams to the side connecting it to the bottom of the tee with 1/4 inch hose

or should i spend the money and go all pvc

cannon monkey wrote:i going to try make a piston valve......

i thinking
2 inch tee
1/2 inch ball valve
chamber... i wanna use my old tank
i believe for the piston i going to use 1 and half inch endcap

wat i want to know... if the endcap for the piston is 1 and a half inch

can i use a 1 inch barrel??
or does it have to be smaller

A 1 inch barrel works well with a 1 inch pipe cap turned around and sanded to fit in a 1.5 inch pipe as the valve cylinder. My Mouse musket was built this way as a coaxial instead of in a T.

idk i like the idea of a piston... i just alot of help i really tight on money and most people say try it if it dont work start again but i dont have the money for that........

can sombody name parts and sizes for me??
i am using a 2 inch tee

i heard sometimes it wont work
i going for my very first piston Smile

i have an old c02 tank i use to fill my first one.. could i use that for the chamber on this cannon.. the only way so far i can think of using this is hose clams to the side connecting it to the bottom of the tee with 1/4 inch hose

or should i spend the money and go all pvc

It'll work as long as you have a surface for the pressure in the chamber to act upon the piston to force it back when the pilot pressure is reduced.

I only just recently (about three months) became confident with piston valves and am absolutely hooked. Their power is ridiculous and, when built right, they open incredibly fast.

If you were to go with a CO2 tank as a chamber, you would need to make sure you connect it with a larger diameter hose than 1/4". The flow restriction that would give you on a 11/2" valve would almost be criminal.
It might just be easier to make a PVC chamber for now. Attach it with threaded fittings so you can change your mind later.

ok can thank you so much at the bottome where u say it says aim.. can i message you on aim?

Sure you can.

it says ur offline
check ur mail on here i send u my screen name

I think the system is referring to my old screen name which i had at the time i created my account.

I'll have to find a way to switch it.

For a 2'' pipe you need to use a 1.25'' endcap wrapped in tape, 1.5'' will not fit unless you turn it down on a lathe.

it fits i was in the store the 1 1/2 inch end cap went in the tee and moved freely with a nice fit

cannon monkey wrote:it fits i was in the store the 1 1/2 inch end cap went in the tee and moved freely with a nice fit

It may fit in the tee but are you not putting pipe in the tee?

i am confused


i was going put the 1 inch pipe into the tee half way so the 1.5 inch end cap would seal upp aginst it


ok i looked around i cant remember who made this we talked once before but this is the kind of piston i wanna make

http://www.instructables.com/id/SV2JQNEF5Y3KXNE/

The 1 inch pipe I assume is the barrel.
What is the 1.5 inch end cap going to be sliding on?

I guess without a sketch, I have no idea of your construction method.