No tater...just a blast?

[bionic]

I want to dry fire an air cannon to vent a high force blast of air. Watching videos you see the effects of the air venting the barrels and it looks like it is powerful on its own.

I don't need to fire a projectile but I do want lots of air to come out. Using 2" pipe what is the ideal length for a tank for this setup? That is, what is the smallest tank made of 2 inch pipe I can use and still get an impressive air blast? Barrel would be stubby and 3/4" pipe. My goal is to go as small as possible but still be powerful. What do you guys think?

[Gun Freak]

its gotta be BIG if you want a strong blast

[Crna Legija]

it dosent need to be big if you use high pressure. 3 feet chamber and barrel with a 2 inch piston valve at 120 psi would knock you of your feet

[inonickname]

it dosent need to be big if you use high pressure. 3 feet chamber and barrel with a 2 inch piston valve at 120 psi would knock you of your feet

I'm going to have to disagree.

Is there a specific use for this?

[Gun Freak]

bigger chamber and lower pressure would work best

[bionic]

It is for an invention. It has nothing to do with destruction or weaponry or tatoes or anything like that. before I cut this 4 foot length of PVC I've got and put caps on it i wanted to check here first for the minimum length to cut to. I'd love to go to 1 foot of length or 2 foot max....for the tank. And keep pressures sort of low.

Picture a rolled up sock at about 2 inches from end of barrel - and when i say barrel I basically have a stub of 3/4 inch pipe as an outlet after the sprinkler vavle. i need to blast the sock ball across the room.

[bionic]

Update -

Made a pretty snazzy tank with 3/4" sprink valve. Lots of honking at 60 psi and lower. Blew a rolled up sock placed 2 inches in front of .75 " pipe barrel/nozzle whatever across the room ok I guess. Much too loud.

Even ported the top of the sprink and put in a 1/8th inch QEV/blow off. Still loud like a tuba.

Design was for a mousetrap. Mouse walks up stands on microswitch platform - puff - unharmed mouse blown into receptacle. Tank recharges. Ready for next mouse.

On to another invention Bye : )