K, air compressors are relatively inexpensive. __ As far as I know, no one has yet taken one horn and changed the diaphragm to see if the tone changes.
Just one idea. If you made the piece bigger that touches the vibrating plastic diaphragm disk would it make it louder? I ask because in high school a girl had me turn her some different size mouth pieces for her tuba. Like wandering if instead of the half inch cap you instead took a half to inch and a half adapter to make contact with the diaphragm??? I've never made one but thought that could make a difference, maybe not a good difference tho.
like how you explained for the non PVC expert like us. I put a set of Harbor Freight air horns on my old CJ5, it's Camo and folks kept pulling out in front of me swapping lanes and running me off the road. Also added a 6 volt horn from a 1950 Ford. Both the squeal from H Freight and antique horns make a loud awful racket. I'm gonna make a set of these instead or keep the others as well. I love seeing folks jump as they ride into my lane when I blow them back over.
You installed the diaphragm, then you removed the diaphragm so you could insert the 1/2 inch pipe, why not insert the 1/2 inch pipe first, then the diaphragm?
The 1st piece of 3" dia. you slip in the rear(1/2"long+/-)/.If you change the length of that,will it change the note of the horn?What about the 1/2" diameter pipe?If you changed that to 3/4" or 1" pipe,will that change the note?I'm wanting to build,like,say,a 5-bell horn setup,so I need to know what part(s) of the horn actually changes the pitch?Thank You!
You can use all sorts of materials, but the loudest horns will use a sheet of polycarbonate plastic because it is a hard plastic material, and that enables high air pressures to be used. Ideally you want a thin but strong and stiff plastic material; increasing mass or decreasing stiffness will sacrifice output, but less stiff diaphragms can be powered by lower pressure air reservoirs - they just won't be as loud.
hey john do you have a video on how to tune these things? and one on how they sound? im probably going to build them with in the next month when i get some free time from work
Car Ramrod use the principles of physics..the bigger the diameter of the vibrating material the deeper the sound or scientifically speaking the frequency is lower as to the length the longer the length the deeper or lower is the sound.hope that might help you
@@kimlemuelalindao8179 This is actually incorrect; the tuning is affected only by the length of the horn. I've experimented fairly extensively with a different variant to confirm this.
Nikolai Hedler use the guitar as an example length is not only the factor in tuning your frequency....the strings in a guitar are all the same length how come they differ in frequency?because the differ in diameter..dont be a hardy its already written in the books..
@@kimlemuelalindao8179 I'm a musician with almost two decades of experience and I've played everything from guitar to piano to trumpet to clarinet to bassoon and more. I've also studied acoustics of instruments and have built my own, including building a couple dozen air horns like these. I have tested specifically how these are tuned. I think I know better than you. The pitch of an air horn is defined by the length of the air column that's vibrating, because it's a wind instrument. A guitar is not a wind instrument; therefore, there is no comparison. Wind instruments' pitches are dictated by the length of the vibrating air column, which is why a trombone has a slide and clarinets have keys. For proof that the diameter of a horn doesn't affect the pitch, compare a flugelhorn and a trumpet or a trombone and a euphonium. Each pair of instruments is the same length and play in the same register, but they have very different diameters for much of their length, which changes the timbre.
@@kimlemuelalindao8179 Oh, really. So when you tune your axe, how is it that the machines change the TENSION of the string and not the DIAMETER. A guitar tuning is a very poor analogy to tuning wind instruments (which is what these horns are). The pitch of the horn depends on the length of the tube. Longer for a lower pitch. Independent of diameter. Ambient air temperature is also a factor.
