Yamaha Royal Star Air Horn

Yamaha Royal Star Air Horn
The Yamaha Royal Star Air Horn will grab drivers' attention with its loud 128 decibel sound. The Rivco Yamaha Air Horn has triple plated chrome trumpets and mounts to the bolts near the swing arm. The Yamaha Royal Star Rivco Horn will be virtually unseen, but will produce a life saving loud sound.

The air compressor creates instant air pressure to the horns. Since the pressure is created so fast there is no need for a storage tank as on Semi Trucks and RVs. Although the pressure is very low (12-15 psi) it delivers a large volume of air (3 CFM or cubic feet per minute). This low-pressure high volume air supply causes the diaphragm inside the horn to vibrate at a high rate of speed or *frequency* the exact speed at which it vibrates is varied by the length of the horn or trumpet. Together the horn set produces an extremely loud 128-decibel warning blast. This is approximately 4 times louder than most electric motorcycle horns, which usually rate at 87 decibels.

A stock motorcycle horn draws only a small amount of power - less than 1 amp - which comes directly from the horn button on the handlebars producing the familiar weak motorcycle beep. The air horn's electric air compressor draws considerably more power - approximately 8 amps. This requires the use of a relay, heavier gauge wire and a fuse to prevent damage to the horn button contacts, as well as provide enough amperage to run the compressor at full speed. These components are included in the kit.