How To Make PVC Train Horns at Home

Most hot rodders like their cars loud, so why should your horn be any different?

Sure, you could buy a train horn, but why spend hundreds of dollars on a train horn kit when you could make your own — It’s cheap, it’s easy, and making stuff is way cooler than buying stuff.

Homemade PVC Train Horns

These simple homemade PVC train horns are based on dozerboymiller’s horn design:

• The horns are made with three reducers,
• the diaphragms are cut from a Tupperware storage container that’s about an eighth inch thick.
• there is an airline powering both the horns that came off of a scuba tank.
• The horns are tuned to a third apart.

The air tank setup has some nylon tubing run to a quarter-inch ball valve, an extended handle to make it easier to turn, and the tubing is T’d off with a pressure gauge.

There are a couple of clips showing how loud they are also from further away. You can gauge how loud they are by how well the sound travels…