Air. Nature’s best natural resource. You need it to live, your vehicle needs it to run and your onboard air system is no different. Unlike the air we breathe, the air that your onboard air system needs requires immense pressure in order to work correctly. Regardless if it's for blowing horns, airing up tires, powering air suspension or something else, you need air pressure in order for anything to work.
We use it every day when we drive our vehicles and honk our horns, but just because we depend on it doesn’t always mean you know how it works. This week, we get into the science of what air pressure is, how it works and (more importantly) what it all has to do with your train horn kit or onboard air system.