Search found 7 matches

by duwem
Tue Apr 06, 2021 10:58 am
Forum: Pneumatic Cannons
Topic: Butterfly Valve- How to Quickly Open
Replies: 1
Views: 2057

Butterfly Valve- How to Quickly Open

Guess the pumpkin guys use butterfly with large springs or pneumatic cylinders to open them fast. I can’t find pictures of this. Anyone have any or done this?
by duwem
Sat Jan 30, 2021 2:52 pm
Forum: Pneumatic Cannons
Topic: Multi Shots out of 100psi Tank
Replies: 12
Views: 7106

Re: Multi Shots out of 100psi Tank

What does the qev gain me over the sprinkler? Better flow? Faster opening?
by duwem
Sun Jan 24, 2021 2:06 pm
Forum: Pneumatic Cannons
Topic: Multi Shots out of 100psi Tank
Replies: 12
Views: 7106

Re: Multi Shots out of 100psi Tank

Yes having the ball valve open does dump a bunch of air from the main tank on each shot.

I will take a look at the link
by duwem
Sun Jan 24, 2021 2:05 pm
Forum: Pneumatic Cannons
Topic: Multi Shots out of 100psi Tank
Replies: 12
Views: 7106

Re: Multi Shots out of 100psi Tank

If I leave the ball valve open it does dump a bunch of air out of the main tank. Will take a look at that link.
by duwem
Sun Jan 24, 2021 1:37 pm
Forum: Pneumatic Cannons
Topic: Multi Shots out of 100psi Tank
Replies: 12
Views: 7106

Re: Multi Shots out of 100psi Tank

why does every post need approval, wow!!
by duwem
Fri Jan 22, 2021 10:55 am
Forum: Pneumatic Cannons
Topic: Multi Shots out of 100psi Tank
Replies: 12
Views: 7106

Multi Shots out of 100psi Tank

[/img][/img]Working on a cannon that needs to shoot foam stress balls 30’ at targets. I have found it takes about 60psi to propel the balls that far with my small secondary tank. Only have 30 seconds to get the most targets possible. Right now I have a 10 gallon tank at 100psi with a pressure regul...
by duwem
Wed Jan 13, 2021 8:49 am
Forum: Pneumatic Cannons
Topic: 2 Stage Pressure Release During Firing
Replies: 1
Views: 1955

2 Stage Pressure Release During Firing

Building a cannon, trying to get the most distance out of it. Projectile will be foam stress balls. My thought was to have 2 tanks, one would be fired when trigger is pulled, and then somewhere along the barrel there would be a switch that the ball would hit and would fire a second valve to the barr...