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Ron's Web Site
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Date: 6-4-2009
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Number of Hours: 8.00
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Manual Reference:
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Brief Description: Electroair Electronic Ignition 2 & Ignition Switch
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I finished wiring up the Electroair electronic ignition system, which replaces the right magneto. The AFS-3400 EFIS takes its engine RPM data from a sensor off the left magneto normally, but the wiring isn't shielded that goes out to the sensor, and AFS requires that you not bundle the RPM sensor with the electronic ignition wiring or the P-lead to the magneto, which I did undertake reasonably well. Fortunately, even if there is EMI on the AFS stock sensor, the AFS can also use the RPM output from the Electroair unit, which is approved by AFS and goes to pin 33 on the AFS and is a 12 volt sawtooth signal at a 3 to 1 ratio for a 6 cylinder Lycoming. I also wired up the Bendix ignition switch, the best reference for which I found in Firewall Forward by Tony Bingelis. With the Electroair unit, the right electronic ignition is left on-line during the start and not grounded out, as in some other ignition systems.
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Ignition switch wiring.
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Ignition Coil and Mag P-lead wiring.
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Electroair manifold sensor.
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