Sound off like a Semi! These noisemakers are perfect for sporting events and parties. The effect is similar to the air horn on a semi or a train. Everyone around you will want to know where they can get their own. Or they will move away and give you more room. Either way works for me.

Step 1: short video

<p>I just built one of these today. Works great. I am hoping to adapt it to use on an electric bicycle as an air horn similar to the commercially made Airzound. Thanks for the good start to my project. </p>
I work in a pharmacy, so I was naturally drawn to the use of prescription vials in your design. I used the Rexam 16 and 30 dram vials and they worked perfect. I really can't believe the sound you can get with very little blowing needed. I giggle like a little girl every time I blow into it. You really made my day with this one. Nice work!
Is there an easier way to make the holes? because : -i have No power tools (except hammer,heavy duty pliers,etc..) -even if i did, i wouldnt be allowed or even ABLE to use them! ~~&gt; so is there any easier way?
Gosh, I haven't been on in months. I just thought that perhaps another way to make the holes might be with heat. How about a soldering iron or gun? That would melt the holes pretty quick.<br>
Made one yesterday. The volume is incredible. Thanks for posting this instructable. I only made a single, but may try double when I get more medicine bottles.
<p>I don't the prescription bottles at home and I doubt anyone will sell them to me empty.&nbsp; Ideas or what other cylindrical objects will work? PVC&nbsp;pipe inside one another?</p>
You could use plastic vitamin or headache pill bottles too.&nbsp; Check your neighbours' blue bins on garbage day.<br />
Nice one, what great fun! <br /> <br /> I made a variation of this instruckable and this one <br /> <a rel="nofollow"> http://www.instructables.com/id/Blow-your-own-air-horn/ </a>&nbsp;out of a toilet paper tube as a proof of concept experiment.&nbsp; The possibilities are endless. <br /> <br /> I strengthened the open ends of the toilet paper tube with &ldquo;caps&rdquo; cut from the sides of a 1 gallon plastic milk bottle hot glued to each open end as described below.<br /> <br /> One end was more like a real cap that was about 1/8&ldquo; bigger in diameter than the toilet paper tube opening with a hole cut in the center for a straw to slide in snuggly and the other end was more like a narrow ring that over hung the outside of the toilet paper tube opening about 1/8&ldquo; and also over hung the inside and of the toilet paper tube by about 1/8 inch too.&nbsp; A bit like a washer with a large opening in the center.&nbsp; This was the end that got the balloon stretched over it.&nbsp; Both &ldquo;caps&quot; where firmly hot glued in place.<br /> <br /> A hole roughly about 1/4 inch in diameter was cut in the side about half way between both ends of the toilet paper tube and this is where you blow into it.&nbsp;&nbsp; <br /> <br /> Stretch the balloon over the &ldquo;washer&rdquo; like cap and insert&nbsp; the drinking straw (bigger the better)&nbsp; into the other end touching the balloon &ldquo;diaphragm&rdquo;.&nbsp;&nbsp; Adjust the position and pressure of the straw against the balloon while blowing into the hole in the side to get it to work.<br /> <br /> The softness of the toilet paper tube muffles the sound but it proves the concept and worked.&nbsp; I await the next empty vitamin/pill/aspirin&nbsp; box to make one for real!<br />
oh yes!&nbsp; i have made them from a number of other cylindrical objects.&nbsp; Pvc pipe was a little overkill, but very sturdy.&nbsp; If you have a Walgreens near you, they might be willing to let you have a few at cost.&nbsp; 30 dram and 20 dram are what they are called.&nbsp; We used to let people buy a few for maybe 50 cents each.&nbsp; Other objects used were film canisters and chapstick tubes.<br />
awesome! I've never seen a 3yr old jump so high!&nbsp; I finally matched his everyday decibel level
<p>Excellent ible!&nbsp; I made one last night&nbsp; using your idea and modding it based on what I had in the house.&nbsp; I did have one question - in step 9 you suggest we &quot;tune&quot; the horn.&nbsp; How is that done? The one I made the&nbsp;bottles &nbsp;fit tight&nbsp;but can be slid back and forth to tune it but in yours are they hot glued together or is the glue used to just create a gasket and the bottles can still move?&nbsp; Thanks</p> <br />
I hot melt the bottom of the outer bottle to the inner bottle.&nbsp; That seal is airtight.&nbsp; To &quot;tune&quot; them, you pull the balloon membrane tighter or looser.&nbsp; When the two notes are identical, it is not as pleasing as when one is higher than the other and they harmonize.<br />
Thanks-&nbsp; I noticed that I could tune mine by adjusting the pressure of the inner tube against the diapgram by moving it a bit back or forth.&nbsp; Also - is you name&nbsp; in relation to the Buell motorcycle?
Buell makes (oops- made.&nbsp; Thanks, Harley) a great little bike displacing 492cc, the Blast.&nbsp; Also known as the B-Last, since it was not the most powerful bike around.&nbsp; I love my Blast, hence the name.&nbsp; Thanks for noticing!<br />
I just made one.&nbsp; Didn't have the right stuff, so it's tin cans and a rubber glove.&nbsp; Works great.&nbsp; Scared the dog right out of the basement.&nbsp; Thanks for a fun instructable.&nbsp; <br />
You bring up a good point.&nbsp; Rubber, vinyl and nitrile gloves can be used as a membrane.&nbsp; We also have had moderate success with Mylar, like used in balloons.&nbsp; But the most durable and easiest to work with material has been good thick helium quality balloons.&nbsp; I suppose there is a latex material commonly&nbsp; found in pharmacies that might be stronger, but I don't like to get my mouth that close to it.<br />
I found your instructable looking for a new noisemaker for halloween.&nbsp; The cans-with-strings is getting old.&nbsp; I'm toying with getting a piece of rubber roofing and a couple large buckets but being the procrastinator's procrastinator It may be a while.&nbsp; I'll let you know when (if)&nbsp;I do it.<br />
Great instructable!&nbsp; I'm going to build one this week.<br /> I noticed from your video that each half is at a different pitch for that truck-horn sound.&nbsp; Does the amount of tension on the balloon determine the pitch?<br />
yes, the tighter the balloons are, the louder and higher the tone.&nbsp; I like them tight!<br />
<p>awesome, i'm gonna install it in my car and use an old air pump i have.</p>
thanks Gogg3n.&nbsp; I have lots of fun with these!<br />
OMG... these are awsome!!!&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; lmao
That's so awsome!:D&nbsp;
Great Job! these are the best ever!
Good work! Please put a MP3 or video, to hear the sound...
video added.
Very good, thanks
Cool - I never thought of doubling mine up!
Saved me the trouble of remembering who / what I was thinking of there. L
I was on the tip of your tongue?<br/><br/><sub><sup><sub><sup>Eewww!</sup></sub></sup></sub><br/>
I knew someone had done something like this, I thought it was you or Las Vegas..... L
um..., how does this thing work?
Just blow on the mouthpiece tee! The balloon vibrates and creates sound. The twin horn effect makes it sound like a train or truck airhorn.
This is an awesome horn...I sat in front of one at a game! And later, my husband alienated lots of people when he obtained one himself.

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