How to make an Air cannon sound cooler/louder?

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
Luke31
Private 2
Private 2
United States of America
Posts: 31
Joined: Thu Jul 18, 2019 12:00 am
Has thanked: 3 times
Been thanked: 7 times

Sat Apr 24, 2021 1:50 pm

Any tricks on how to make your air gun sound cooler or louder than it normally should?

My only guess is to shorten the barrel so the air is not getting muffled as much from the inside of the barrel, but I need a long barrel for my needs.

Higher PSI will make it sound louder, although I would like a solution that doesn't impact the function that much, just makes it louder.
User avatar
Moonbogg
Staff Sergeant 2
Staff Sergeant 2
United States of America
Posts: 1671
Joined: Mon Oct 13, 2008 10:20 pm
Location: SoCal
Has thanked: 98 times
Been thanked: 58 times

Sat Apr 24, 2021 2:57 pm

I think it comes down to simply having excess air leaving the barrel at as high of a pressure as possible. Basically, I think you need an inefficient cannon. Also, maybe you can leave the cannon as it is and launch a light weight projectile. That should allow the air to escape at a higher speed and maybe it will make a louder noise. With my combustion cannon I notice that golf balls shoot louder than soda cans, so maybe gas velocity plays a significant role. Not sure though without experimenting with it.
User avatar
hectmarr
Corporal 5
Corporal 5
Argentina
Posts: 942
Joined: Sat May 07, 2016 3:49 pm
Location: Argentina
Has thanked: 158 times
Been thanked: 157 times
Contact:

Sat Apr 24, 2021 10:14 pm

Try to cover the muzzle of the firing cannon with a piece of tape. It is not a question of introducing anything, rather of obstructing the muzzle of the barrel with plastic tape. When you fire, with its standard ammunition, the tape will soften and the projectile will come out freely, but that causes a pretty loud boom. I used to do it in the past, when I was a kid, with my 4.5mm spring rifle, and I would obstruct the muzzle with a small piece of gum.
I am the author of the first semi-automatic hybrid, check this out :shock: ...viewtopic.php?f=28&t=26676
And of the hybrid that can shoot in the shortest time: :shock: viewtopic.php?f=28&t=27190
Single-pump autonomous hybrid . viewtopic.php?f=28&t=27038
golf45
Private
Private
Great Britain
Posts: 6
Joined: Sat Apr 10, 2021 12:00 pm
Has thanked: 2 times
Been thanked: 3 times

Tue Apr 27, 2021 5:00 pm

In some countries you would want to make it quieter than attract attention to nosey parkers who would complain or ring the cops. Alright to make it louder if you live in the middle of nowhere. I think the ideal cannon would be a quiet system, thats cool.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 25953
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 312 times
Been thanked: 180 times

Donating Members

Sun May 02, 2021 7:24 am

Adding a cone shape to the muzzle works very well in airsoft:

Image
hectmarr wrote:You have to make many weapons, because this field is long and short life
Luke31
Private 2
Private 2
United States of America
Posts: 31
Joined: Thu Jul 18, 2019 12:00 am
Has thanked: 3 times
Been thanked: 7 times

Mon May 03, 2021 1:20 pm

jackssmirkingrevenge wrote:
Sun May 02, 2021 7:24 am
Adding a cone shape to the muzzle works very well in airsoft:
It looks like a cone shape directs the sound instead of amplify it. I would like a solution that amplifies the sound for all parties, including the ones behind it firing the gun.

Maybe a microphone at the end of the barrel but thats kind of too cheesy.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 25953
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 312 times
Been thanked: 180 times

Donating Members

Tue May 04, 2021 8:00 am

In my experience it amplifies the noise significantly for the shooter too.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Luke31
Private 2
Private 2
United States of America
Posts: 31
Joined: Thu Jul 18, 2019 12:00 am
Has thanked: 3 times
Been thanked: 7 times

Tue May 04, 2021 11:48 am

I'll try it next time.

The picture looks like theres more things going on, such as holes in the cone, and it looks like its disconnected from the barrel? While also being in a cylinder.
User avatar
farcticox1
Sergeant
Sergeant
Posts: 1046
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 38 times
Been thanked: 77 times

Wed May 05, 2021 4:40 am

jackssmirkingrevenge wrote:
Tue May 04, 2021 8:00 am
In my experience it amplifies the noise significantly for the shooter too.
Yes, I've done that by mistake while making a dummy silencer for looks, and made a loudifier by mistake, a piece of 1" PVC pipe works really good.
Luke31
Private 2
Private 2
United States of America
Posts: 31
Joined: Thu Jul 18, 2019 12:00 am
Has thanked: 3 times
Been thanked: 7 times

Wed May 05, 2021 11:48 am

farcticox1 wrote:
Wed May 05, 2021 4:40 am
jackssmirkingrevenge wrote:
Tue May 04, 2021 8:00 am
In my experience it amplifies the noise significantly for the shooter too.
Yes, I've done that by mistake while making a dummy silencer for looks, and made a loudifier by mistake, a piece of 1" PVC pipe works really good.
Does just a cylinder at the end work? If you could post an image of your setup I would appreciate it.
User avatar
farcticox1
Sergeant
Sergeant
Posts: 1046
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 38 times
Been thanked: 77 times

Wed May 05, 2021 5:16 pm

Yes, just an open cylinder worked for me, 2 or 3" long.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 25953
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 312 times
Been thanked: 180 times

Donating Members

Fri May 07, 2021 10:02 am

Luke31 wrote:
Tue May 04, 2021 11:48 am
The picture looks like theres more things going on, such as holes in the cone, and it looks like its disconnected from the barrel? While also being in a cylinder.
The example I showed you is adjustable, with holes in the cone that allow you to vary the amount of noise. When the holes are completely plugged it makes the most noise.

As farcticox1 said adding an open cylinder (sort of like a silencer with the front endcap removed) will also increase noise.
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
hectmarr
Corporal 5
Corporal 5
Argentina
Posts: 942
Joined: Sat May 07, 2016 3:49 pm
Location: Argentina
Has thanked: 158 times
Been thanked: 157 times
Contact:

Sat May 08, 2021 10:16 am

jackssmirkingrevenge wrote:
Fri May 07, 2021 10:02 am
Luke31 wrote:
Tue May 04, 2021 11:48 am
The picture looks like theres more things going on, such as holes in the cone, and it looks like its disconnected from the barrel? While also being in a cylinder.
The example I showed you is adjustable, with holes in the cone that allow you to vary the amount of noise. When the holes are completely plugged it makes the most noise.

As farcticox1 said adding an open cylinder (sort of like a silencer with the front endcap removed) will also increase noise.
Interesting Device for when you want to scare off small-time and unarmed thieves. Do you know where they are bought commercially? I'd like to show people that they have an air deterrent project and they need to increase the noise from the markers.
I am the author of the first semi-automatic hybrid, check this out :shock: ...viewtopic.php?f=28&t=26676
And of the hybrid that can shoot in the shortest time: :shock: viewtopic.php?f=28&t=27190
Single-pump autonomous hybrid . viewtopic.php?f=28&t=27038
User avatar
farcticox1
Sergeant
Sergeant
Posts: 1046
Joined: Sun Mar 31, 2013 12:37 pm
Has thanked: 38 times
Been thanked: 77 times

Sat May 08, 2021 12:50 pm

Who were the guys building those beutifully machined sound guns ?

Think this it
User avatar
hectmarr
Corporal 5
Corporal 5
Argentina
Posts: 942
Joined: Sat May 07, 2016 3:49 pm
Location: Argentina
Has thanked: 158 times
Been thanked: 157 times
Contact:

Sat May 08, 2021 1:11 pm

farcticox1 wrote:
Sat May 08, 2021 12:50 pm
Who were the guys building those beutifully machined sound guns ?

Think this it
Oh yeah! beautiful machine, and it works excellent! but my question goes a different way.
There is a user of a forum in my country, who tries to increase the sound of measured, purchased marker weapons, of the commercial ones, to increase the deterrent power of this type of weapon. They make absolutely nothing, they buy everything, and my concern is to give this person a device that is already manufactured, to buy, and then use, just that.
The noise cannon is a work of engineering, and creation, inexhaustible I think, for people who only buy and use what is made. I'm not saying it's wrong, but what we do here, what you see around these sides, is a totally different game from buying and using. :)
I am the author of the first semi-automatic hybrid, check this out :shock: ...viewtopic.php?f=28&t=26676
And of the hybrid that can shoot in the shortest time: :shock: viewtopic.php?f=28&t=27190
Single-pump autonomous hybrid . viewtopic.php?f=28&t=27038
Post Reply