Multishot Air volume Query

[carl2.0]

Hey guys Im building a new sprinkler valve pnuematic with a built in spring loaded magazine that will hold 3-5 pellets. Im now workin out calculations for the chamber, my first puematic had a volume of 178.92 cm3 and at 120 psi I only got 1 shot. What volume should the chamber be for this new pnuematic if Im lookin to get atleast 3 shots at 140-150 psi ???

[rednecktatertosser]

You arent going to get more than one effective shot out of a sprinkler valve cannon. It is impossible. the pressure discharges too quickly and holds the valve open.

[blind909]

http://www.spudfiles.com/forums/pcpbabb ... 14077.html

[psycix]

Sprinkler valves CAN empty the chamber in multiple shots, but it means a quick and short pilot is needed, maybe something like an hammer valve.
The first shot will be the most powerful and the power will drop off with each shot.
I would get the largest volume possible since its very hard to get more then 1 powerful shot out of one single air tank.

[frankrede]

It is possible using a regulator and possible some flow constrictions(think a washer glued into a male adapter fitting before the valve

[carl2.0]

Ahh ok makes since I guess...Hmm soo what about a QEV ?? that could work as well ?