The document discusses how magnetos work to provide ignition in small aircraft engines without the use of batteries. It explains that a magneto uses a rotating magnet to generate electrical current and produce sparks in the spark plugs. It describes the basic components of a magneto, including the magnet, coils, breaker points, and distributor. It also discusses the importance of magneto checks during engine run-ups to identify any issues with the ignition system before flight.

1. Magneto Madness Steve Berube, A&P TakeWING Safety Meeting www.takeWINGInc.com 541-895-5935

8. Magnets and Electricity Magnetic Induced Electricity Wire passing through a magnetic field creates electricity.

9. Electromagnetism Electromagnetism Magnetic Field Electricity flowing through a wire creates a magnetic field.

11. Automotive Ignition System Battery Speaking of Sparks 12 Volts Spark Plugs Ignition Wires Distributor Coil Step-up Transformer (12 Volts to 20,000 Volts) Rotor Points Ignition Switch

12. Ignition Coil (Electromagnetic Induction & Step-up Transformer) Battery Switch Primary Coil Secondary Coil 200 turns 13,000 turns 12V 20,000V Ignition Systems Coil Step-up Transformer (12 Volts to 20,000 Volts)

13. Automobile Distributor Rotor Points Ignition systems

14. Coil Distributor Spark Plug Ignition Systems

15. Automotive Ignition System Battery Ignition Systems 12 Volts Spark Plugs Ignition Wires Distributor Coil Step-up Transformer (12 Volts to 20,000 Volts) Rotor Points Ignition Switch

16. Aircraft Ignition System Magnetos No Battery!! Spark Plugs Ignition Harness Ignition Switch Auto to Airplane

17. Aircraft Ignition System Aircraft Engine

18. Aircraft Ignition System Magneto Rotor Coil Points Magnet Distributor P-Lead The Magnet replaces the Battery Aircraft Ignition System

19. Aircraft Magnetos Magneto Madness

20. Magnetic Circuit Magneto Madness Coil Magnet Iron Pole Shoes

21. Rotating Magnet Magneto Magneto Madness

22. Rotating Magnet Magneto Magneto Madness

23. Magneto Ignition System & MAGNET & MAGNET Ignition Switch On P-Lead Primary Winding Secondary Winding

24. Aircraft Ignition System Spark Plugs Magnetos Ignition Harness No Battery!!

27. Provides momentary high rotation speed and a retarded spark for engine starting Impulse Coupling Impulse Coupling

28. Impulse coupling Retarded Spark Intake Compression Power Exhaust BTDC ATDC

29. Inside the Impulse Coupling Body Coil Spring Flyweight Cam

30. Impulse Coupling

31. OK, so what does all this magneto stuff mean to the pilot? Magneto Madness

37. Magneto Madness Thank you! TakeWING Safety Meeting www.takeWINGInc.com 541-895-5935 TakeWING Aviation Club and Maintenance Center