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Rob's REBVAIR Project
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Date: 9-21-2014
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Number of Hours: 8.00
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Manual Reference:
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Brief Description: Electrical Schematic: part 1
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Image 1 shows my first attempt at the electrical schematic for this plane. I apologize for the quality of the image...it is a converted PowerPoint file, and I am working on improving the resolution. I followed some fundamentals laid out by W. Wynne, but I can't thank enough folks like Ron Lendon, Eric Fogelin, and Mark Langford for sharing their electrical schematics for their planes...it's why I decided to put this up on my site as well.
I don't know if this is typical of most builders, but it really did take me many hours of study and cross referencing to fully understand what I think I wanted in an electrical system, I initially studied the Bingelis FF and Nuckoll's AEC books, cross referencing with Mark Langford's schematic on his website. The additional details I got from Ron Lendon and Eric Fogelin really helped solidify things, especially the inclusion of the B&C OVP components. I admit my schematic is pretty unsophisticated and since it hasn't been looked over by a Tech Councilor yet (or anyone proficient in this area), it will likely need modification. However, Mark Langford has had hundreds of hours on a similar system without issue, so maybe simple is OK.
As you look this over, keep in mind that the ignition for this engine is fully dependent on ship's electric power (no magnetos). As WW posits, the backup electrical power to the dynamo is the battery. This is why the ignition circuit (on the left of the page) is wired directly to the battery AHEAD of the master solenoid. Considering the power consumption of your typical coils-ignition, the engine is expected to run for hours on a well-charged 12V battery alone. There are two coils (on partially separate circuits) for some measure of redundancy.
Look for part 2 soon for additional description of the 'logic' behind this schematic.
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Schematic V 1.0
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