The operation of the magnet starts with the creation of an AC current. The current is created by turning a high strength permanent magnet on the rotor, in close proximity to the magnet coil. The coil contains two windings, a primary winding and a secondary winding. The primary windings purpose is to capture the magnetic lines of flux created by turning the magnet. The current from the primary winding flows to both the breaker points and the capacitor, which are wired in parallel. When the breaker points are closed, the primary winding is grounded and the current flows directly into the case. When the breaker points open, the field and the primary coil collapses. The collapsing magnetic lines of flux cut across into the secondary coil. The secondary coil has a far greater number of turns, meaning that the induced current is a much higher voltage. The current is then routed to a distributor where it crosses a small air gap travels down a lead and creates spark inside the combustion jaber. There are many parts inside of an aircraft magnet, and I will now take the time to explain a few of the critical components. The magnet case is separated in two halves, the magnet housing and the distributor housing. The magnet housing is the larger half and contains the coil. While the distributor housing is the smaller half and contains the distributor block along with the points and capacitor. The points cover is a small cover that protects the points capacitor and cam from thought. The oil seal is pressed into the magnet housing and the rotor passes through it to connect to the engine drive. The oil seal's primary purpose is to prevent engine oil from entering the magnet housing. The points in the system open and close the path to ground from the primary coil. This causes the primary coil to charge when the points are open and discharge when the points are closed. The rotor is the largest component of the magneto. The rotor is divided into several sections. The drive end of the rotor is threaded and made to accept an impulse coupling. The impulse coupling is locked into place using a woodruff key and a cast-related nut. The next section is the large ball bearing. The inner race is pressed onto the rotor. The outer race is pressed into the magneto housing. Next is the magnet which when turned provides the magnetic field necessary for operation. The gear on the rotor's purpose is to drive the distributor gear. The smaller ball bearings inner race is also pressed onto the rotor and the outer race is pressed into the distributor housing. The final section is the cam which I will explain later. The points are actuated by the cam which is located at the end of the rotor. As the cam turns the high spot pushes up against the cam follower which in turn opens the points and disconnects the primary circuits path to ground. The coil in the system is used as a step-up transformer as well as part of the AC generator by picking up the magnetic lines of flux created by the rotating magnet. The capacitor's only job is to prevent the current from the primary winding from jumping across the breaker points to ground. The distributor block is the connection between the magneto and the leads. The distributor block has a center boss in which the distributor shaft rides. The distributor block also has electrical contacts. High tension electrical current jumps to the contact from the distributor. The distributor is gear driven off the rotor when the distributor reaches eGAP and the breaker points begin to open. The distributor contact will become aligned one of the contacts in the distributor block. This will allow the high voltage current to jump and travel down the lead to a spark plug. This concludes the operation and component description video for a Bendix aircraft magneto.