The Compufire electronic ignition on my 2180 VW from Great Plains uses 0.6 to 7.9 amps, idle to wide open throttle, as displayed on my instrument panel ammeter. The more sparks it makes, the more juice it takes.
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA ------------------------------------------------------ > > The idea of a high-tech battery sounds interesting, but I wouldn't be > needing it just for the avionics but also for the engine. I plan to have a > regular VW engine, probably Great Plains, and they normally have one > magneto, plus a secondary ignition that's powered by the alternator. So > either I'd have to fly on one magneto or have a battery system that's able > to put out enough juice to run a VW secondary ignition system for a whole > day's flying. Maybe a lithium battery could do that, but I'm not even > sure > how much juice a VW ignition system uses (or where to find that out). > > > > > Mike Taglieri >
