| Electrical System: |
(my electrical files may change daily as I have regular brain spasms that lead to startling revelations, ultimately leading to the conclusion that what I had was what I "wanted" and no longer what I "need")
I created some unique challenges when I decided to use an electronic fuel injection and ignition system and an EFIS for my flight instruments. I decided I wanted a system that uses two batteries and one alternator and still be able to have electrical power for at least 35 minutes after losing either battery or the alternator. This system design is a variation of 'Lectric Bob's "Foldout 4" design, utilizing a main battery buss, an essential buss and an engine buss. Having the ability to shut everything down and the engine to continue running off of the engine buss was the focus of the design. If the battery that powers the engine buss malfunctions, I can switch batteries and continue to keep the engine isolated from any other problems.
WIRING DIAGRAMS:
Current 446 Airframe and Engine CAD drawings:
Delta CAD Format: All of my CAD drawings are drawn in Delta CAD. It's a real simple program that makes it easy for us non-AutoCAD types to make professional looking CAD drawings. If you have the capability of using Delta CAD, you can download my complete Wire book (440kb) in .DC format. Delta CAD, the program, is available by clicking HERE.
NEW DXF Format: Now you can download my complete Wire book in .DXF (2.3mb) format.
PDF Format: For everyone else, I've converted each page of my Wire Book pages into PDF format and stored them here and in the Glasair 446 Library. (Click on the picture to download the PDF file):
| Power Distribution Diagram | |
| Ground Distribution Diagram | |
| Fuel Pump Failover Diagram | |
| EFIS Lite Diagram | |
| Navigation Lights Diagram | |
| Landing Lights Diagram | |
| Strobe Lights Diagram | |
| Instruments Diagram | |
| Communication Radio Diagram | |
| Transponder Diagram | |
| Flaps Diagram | |
| Overhead Console Diagram | |
| Propeller Diagram | |
| Miscellaneous Connector Pin-outs | |
| EFIS to Transponder Encode Pin-outs | |
| PM501 Diagram | |
| Subaru ECU 1 |
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| Subaru ECU 2 |
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| Subaru ECU 3 |
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| Subaru ECU 4 |
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| Subaru ECU 5 |
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| Subaru ECU 6 |
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| Subaru ECU 7 |
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| Subaru ECU 8 |
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| Panel Dimmer Diagram | |
Wire Sizing:
Mil-W-5088L helps to calculate proper wire sizes. Scott Dahlgren used this information to provide experimental aircraft builders with this really neat Excel spreadsheet.
Copper wire chart for DC service - Mil-W-5088L Ver. 3
(84kb)Nav and Landing Lights:
LED Nav Lights With Integrated Landing Light Info, Click Here.
Fun Stuff:
BMA EFIS Lite homebrewed key pad
Other Stuff: Soob ECU research diagrams
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