hi fellows ,,,

all the gasoline engines i have used have had flywheel magnet ignition ,, i was thinking of doing away with the fly wheel and going with a electronic ignition ,, how long does a ( oh lets say 1400 mah battery ) last before needing a charge ,, 1-2 flights or all day ,, and how about rf noise ,, it would seem that with no flywheel you would eliminate rf noise ,, but i dont really know ,, i was just guessing at a 1400 mah battery ,, can someone advise me on battery size ,, and how long the battery will last on average ,, and is there any rf noise ,, would seem to me electronic ignition would be the way to go ,, if the battery will last ,, i would hate to go out and only get 2-3 flights and the battery is dead ,, comments,, help,, suggestions would be greatly appreciated ,,

thanks fellows ,,
jon ,,,