I also prefer magnetos. They are definitely a little more complicated than battery ignition. A magneto produces a hotter spark the faster you turn it. However, at the RPM's that these old girls turn, that is really not a factor.
However, their true value is that regardless of battery condition, even a dead battery, the tractor will start and run if the ignition system is a working order. A battery ignition spark will degrade with lower voltage from the battery. Also for cold starting, a magneto can't be beat. Understand that the coil is nothing but a "step up" component. the lower the input voltage, the lower the output voltage. When cold starting a battery ignition, the amp/voltage drop due to the starter drawing current, will cause the spark to be "colder" and weaker. A cold start is when you really need a hot, strong spark, and exactly the worst time since you have significantly reduced voltage due to the starter draw on the battery.
Once again, mags are more complicated and require more maint. They are not for everyone. I prefer them.
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Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
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