booming air cannons

[ravensmoon]

I have made tons of air cannons over the years, but none of them ever made noise?? What do I need to add to my current ones for the sound portion?

[SeanMassacre]

There is a company at all of the shows that has a large boom air cannon. They always have two large green balloons above their booth. They use a large diameter PVC tube I believe. Just a thought.

[scottylmt]

Also there is that bird-scaring cannon another poster suggested a few threads down. That might be what you're looking for.

[ravensmoon]

Not the bird ones...this is for indoors... Ive seen videos of air cannons that have sound. I have plenty of cannons but the just shoot air..no sound. I wasn't sure if there was any trick to get them to make noise.

[deathstaste]

minions web

[craigsrobotics]

a long steel pipe coming out of the valve's outlet. The longer the pipe, the louder the boom. We use 3/4" 2 feet long pipe and they sound incredible