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Airhorn for my (upcomming) Bike

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Lord of nothing:
I will buy 2 Horn (or Makrofone) just like that:


I found a Company who produce them. The told me I have to drive them with 5 - 10 Bar ( https://en.wikipedia.org/wiki/Bar_(unit) ) for 134- 139 dB(A) in 1m.  ;D
Enough for the Stupid Kiddys with there Sound suppressing In Ear Headphones.

So the question is does anyone know a small Air Electic Compressor?
Linus show us a easy way to make my Own Power Pack: https://linustechtips.com/main/topic/981526-diy-lithium-battery-what-could-go-wrong/
That should enough Juice to drive an Pump and an Electromagnetic Valve.
Sure I will use a 2 Tone Makrofone. One 370Hz and 660 Hz.  :-+

So I gues I need:
1x Automatic Air compressor for 10 Bar.
1x Airtank (how many L?) for 10 Bar.
2x Magnetic Air Valve
a Electric Switch, Some Wire and Tubing.
Right?
THX!

In Vacuo Veritas:
There must be a way to compress the air at home and simply release as needed instead of carrying around all that garbage?
How many times do you think you'll be able to use this until either Die Polizei or a passerby re-arrange your face?

Lord of nothing:

--- Quote ---There must be a way to compress the air at home and simply release as needed
--- End quote ---
Sure but the Air Tanks are going to be very huge. I will need them often since the People here drive like crazy. Driver think the Light and Road Signs are just a recommendation.  :palm:

--- Quote --- until either Die Polizei
--- End quote ---
https://www.oeamtc.at/thema/fahrrad/fahrradausstattung-definition-sicherheit-und-ausstattung-17153166

--- Quote ---Meist ist das natürlich eine "helltönende Glocke". Aber auch eine Hupe ist zum Beispiel zulässig,
--- End quote ---
Long Storry short: "Even a Horn is Permitted".  :popcorn:
So for Bikes there is NO Regulation (yet  :popcorn:) who define what the max Noise Level is. For Cars there is a Regulation but not for a Bike.  :clap:

In Vacuo Veritas:
A 3000 PSI air gun tank and a regulator would work, no? Much lighter?

DaJMasta:
If there any kind of local noise ordinances, then yeah, that's not going to be allowable by them.  And if it actually comes to using it, the only one within 1m will be you, so make sure you have good hearing protection... like 20-30dB worth of attenuation would get it to the safe exposure range in limited bursts, but extended exposure or consecutive days of exposure could still do damage in that case.


I wouldn't bother with rigging a switch.  Get a mechanical valve that can be pulled like a switch, then rely on your electric compressor's pressure limit shut-off switch, then tank capacity just depends on how long you want to be able to have it go.




To be clear, though, this isn't a good idea.  Not only is the sound level potentially damaging to your own and others' hearing, but the shock factor of such a loud sound WILL cause people to suddenly do unexpected things, and that kind of reaction causes accidents.

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