Hi, In UK where the PFA are far more restrictive than the EAA, dual ignition is the std.
The favourite system of yor was dual Lucas tractor mags - they stopped making them back in the 50's but they keep on keeping on . Most modern planes when faced with replacing the Lucas set up go for the Leburg Electronic system. see http://www.leburg.freeserve.co.uk/ This is composed of two completely separate ignition packs and car HT coils running with power from 2 small batteries but fed from a single alternator. Obviously you want some form of low volts annunciator for the batteries and alternator. I still have the Lucas set up, but I know there is high satisfaction with the Leburg system, it produces a wopping big spark, and making prop swinging much easier Pete
