With the increased use of aircraft, the allies wanted their aircraft to be as reliable as the enemy’s airplanes. World War One is where aviation first saw major involvement in military conflict. Not the second one, which spawned many technological advancements, but the First World War in 1914. The Scintilla magneto has roots back to the World War. Even submarines have been equipped with Scintilla magnetos. Vertex magnetos have been around for decades and are available for practically every application.
Even after 120 years, magnetos are still being made for motorcycles, performance, and classic cars with very little change. First introduced on the 1899 Daimler Phoenix, several other car manufacturers followed shortly after. The multiplied charge produces a spark with higher voltage – as much as 20,000 volts – a hotter spark than conventional distributors can produce. The number of windings in the secondary circuit are greater than the primary circuit, the current is multiplied in the secondary windings.
Using a series of rotating magnets that break an electrical field to charge the primary circuit, then transfer the current charge to secondary windings. In this regard, a magneto is an electrical generator. Unlike a typical distributor ignition, the magneto creates energy for a spark without an external electrical power supply. The best description of a magneto ignition is simply a distributor and generator combined in one single unit. These ignition systems work best when size and weight restrictions limit other types of ignition systems powered by an external battery. In aircraft and high-performance racing engines where a dependable hot spark is needed, magnetos are the solution. The humble, but very reliable, magneto ignition system has stood the test of time for well over 100 years, and is still used in high-performance applications today.
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