Blowing a Train Air Horn
Train air horns are available as automotive aftermarket enhancements. Most often, they are sold as a complete, package which the industry refers to as a kit. Kits come with all of the components needed as well as a set of very detailed instructions which make it possible for enthusiasts who know their way around an automotive repair shop to install the device themselves.
A number of manufacturers create train air horns and package them for sale via a wide variety of aftermarket and enthusiast channels. Some are even made by companies who make the horns used on modern-day locomotives. Regardless of who is making it, the kit contains an air compressor, an air tank, horns that are referred to as trumpets, an air valve and the tubing and wiring to put it all together. They will also generally have an air gauge so you know the volume of compressed air the tank contains.
The operation of a train air horn is a relatively simple process. Basically the air compressor pumps compressed air into the tank. When the horn button or lever is activated valves open and the compressed air is channeled through the trumpets which have a specific shape to output the desired tone.
Once the air tank is depleted of compressed air, the compressor goes to work compressing more air and rebuilding the air pressure in the tank so that it’s ready for the next time the device is used.
A train air horn can have a number of different sizes and shapes. The quality of the device is measured by the number of tone levels delivered as well as the clarity or cleanliness of the sound. In addition to sound quality, there is of course volume. After all, it wouldn’t be realistic if it wasn’t loud as we’ve come to expect from the horns on actual locomotives. Volume is sometimes achieved via an audio system of sorts, although an authentic system achieves it’s sound level through the size and quality of the systems components.
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