DIY air horns

[POS carb]

So you know how youtube is, you start watching a video about Russian meteors and end up on a video with some american in China wearing a motorcycle helmet making out to a robotic construction safety worker (I am 100% serious (http://www.youtube.com/watch?v=mM-OECEdVMg))
well somehow I ended up on a video where some guy bought some plans on ebay and made train horns using pvc pipes and transmission fluid funnels and it sounded damn nice (http://www.youtube.com/watch?v=qE-E2EuWR0Q).

here is a very basic but good video that shows the fundementals of an air horn(not really a train horn)
PVC Airhorn.mp4 - YouTube (http://www.youtube.com/watch?v=gOzc5guWD_A&feature=endscreen)

so basically it looks like you have an outer chamber filled with air separated from an inner throated/horned chamber by a diaphragm of your choice.

I want to try something like this because I am a closet hillbilly :inout: and I think my Crown Vic would be an awesome candidate for such a device

I was wondering how to tune such a device like if you build two or three and you want them to play a musical chord.
I think you would change the mass of the diaphragm but then I remembered car horns have a set screw on the back which I assume is a mechanical way of changing the tone.

Anyways, I'm really looking for a good DIY guide for building air horns... Any suggestions?

[2oodoor]

No but Im a follower of hillbilly , lack of a better name, enjunuity :cool:
If nothing else you can use different transmission funnels, but you wanna tune to pitch that could be interesting.

Tune it to bad boys whatcha gon do.. That would be so over the top

[A18A]

i wanna make one on a bigger & louder scale now!

[Legend_master]

That's is awesome, and it's your duty as a hillbilly to make the horn sound like this song.

Dueling Banjos - YouTube (http://youtu.be/zPK8SWDF-kg)

[dieselgus]

Lol. Funny this came up as I stumbled across that very video a couple weeks ago. They do sound pretty good for what they are made out of. Tuning-wise, probably be like any horn......longer lowers the pitch, shorter raises the pitch.

I want a set of Nathan Airchime K5L so very bad for my Honda.

[Vanilla Sky]

I think if I were going through the trouble, I'd buy some bent up brass student models and cut the bells off. Probably just as cheap as funnels (I've bought working student trumpets for $5), and they'll sound a lot better.

[Dr_Snooz]

I would say make it play La Cucaracha, but then you'd be surrounded by people wanting sandwiches...

(All the lunch wagons here play La Cucaracha)

[2oodoor]

I would say make it play La Cucaracha, but then you'd be surrounded by people wanting sandwiches...

(All the lunch wagons here play La Cucaracha)
We call those Roach Coaches here... Le cocka- roach, oh der i get it...

[POS carb]

I found some Cadillac 4-note horns at the junkyard, $4 each

http://carphotos3.cardomain.com/images/0016/62/40/16122604_large.jpg

made a bracket, they're gonna fit perfectly behind the grille. The Vic has so much space for stupid projects :)

[Vanilla Sky]

Caddy horns are cool.