That's why they ceased using them (magnetos) in automobiles a long time ago, right From experience I know that a CH ignition is extremely reliable and works for longer than most will ever fly an engine. Those that have more than 400 running hours on an engine/ignition combination, please raise your hand. Not 400 flights, 400 or more hours. Those few that raised your hands, how many of you have 1,200 hours or more on an engine/ignition?

The CH units make it there all the time. BTW, the century changed 7 years ago. It's now the 21st.