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How does the magneto ignition system work?

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How does the magneto ignition system work?

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Old 06-29-2009 | 01:14 PM
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From: Racine, WI
Default How does the magneto ignition system work?

I am curious as to how a magneto ignition system works. I know a voltage is generated when the crankshaft is turning, but does it go to a coil and then to the plug or is enough voltage generated from the magneto itself to fire the plug?

Does anyone have a link to the information?

The reason I'm asking is because one of the guys in our club insists that there is a set of points in the system and I think he is 100% wrong.

Thanks,
Birman
Old 06-29-2009 | 01:16 PM
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Default RE: How does the magneto ignition system work?

The flywheel has a magnet in it. When this magnet passes by the coil rapidly it produces a voltage that eventually goes out the spark plug
Old 06-29-2009 | 01:36 PM
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Default RE: How does the magneto ignition system work?



Magneto ignition systems can be configured multiple ways, and at least for the older style systems, your friend is right, many of them used points as the switching mechanism to fire the secondary coil into the spark plug.</p>
Old 06-29-2009 | 03:49 PM
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Default RE: How does the magneto ignition system work?

The reason I'm asking is because one of the guys in our club insists that there is a set of points in the system and I think he is 100% wrong.
Bet him if there are no points that he will stick his tongue on the plug while you crank the engine.Nope, there are NO POINTS IN THE ZENOAH IGNITION
Old 06-29-2009 | 04:22 PM
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From: Arcen, , NETHERLANDS
Default RE: How does the magneto ignition system work?

ORIGINAL: Birman

I am curious as to how a magneto ignition system works. I know a voltage is generated when the crankshaft is turning, but does it go to a coil and then to the plug or is enough voltage generated from the magneto itself to fire the plug?

Does anyone have a link to the information?

The reason I'm asking is because one of the guys in our club insists that there is a set of points in the system and I think he is 100% wrong.

Thanks,
Birman
Many ignitions have no contact points. They do that with internal electronic switches. The low high amp voltage loads the first stage coil into full magnetic saturation, which then discharges through the High Tension coil to provide high voltage at low current for the spark.

PS
on most flywheels there is the US patent pending number. Go to USPTO.gov and look up the patent. The electronics will be described in more detail than yo care for.

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