Quote Originally Posted by KSH
Where does one get one of these, and how do I mount it on my bike? This sounds like a great idea!
It's called an "Air Zound" and is made by Delta. They're hard to find (if it's even carried) at a LBS however you can find them online. Do a google search on 'air zound'. Here's a link from Harris Cyclery:

http://harriscyclery.net/itemdetails.cfm?id=1035

The good things about this horn is that it is made of plastic, powered by a refillable (via a shrader valve) soda bottle (16 oz one I think), and designed to go on a bike. The downside to it is that the horn is made of plastic. This means that the horn is light, however, if you are rough with it, it will break. You also do not want to put the horn on and off and on and off on the bike. For me, I just leave it on the Bianchi since it's my commuting bike.

Another nice option is that it has an air restriction valve which means you can control how loud the horn is by restricting the airflow to the horn from the reservoir. (Tip: When filling the horn if no air seems to go in, check this valve. It's probably closed)

This horn is _LOUD_. They weren't joking that it's 115 decibels. I've accidentally hit the horn while moving the bike around and gone momentarily deaf. Also, while heading toward the shuttle station I got my shuttle to stop and look for me by blasting the horn... from about 400 feet away. I still keep on meaning to do a real measurement test using a couple of sound meters we have here but haven't done it yet. I want to see what its really putting out. heh.

Mel