As I have asserted early in this thread, I believe the best performance is
with smoothed DC to give large amounts of stable corona short of sparking.
An ignition coil as per the original enquiry is composed of short pulses
of low duty cycle. Power is only available while the voltage is applied
so a 10% duty cycle means 10% power for that peak voltage.
I know of no-one who has constructed a successful lifter with these.
I have made one that can carry its own weight in payload (3g) using 80kV
smoothed DC from a CW multiplier derived from a Royer driven flyback.
http://tesladownunder.com/Lifters.htm#Lifters-80kV
I agree with Antonio's comments. Sadly lifter enthusiasts are almost as
prone to pseudoscience as Tesla enthusiasts are and the whole field is
muddied by antigravity and asymmetrical capacitor nonsense.
Unfortunately it is real "rocket science" as ion drives are used in a
thrusters in various spacecraft. Real scientists understand it perfectly
well and they don't use Naudin's site for reference, I'm sure.
Amateur experimentation will be plagued by the difficulties of
measurement. Even simple voltage measurement at the lifter itself is
difficult and the loading effect of even changing polarity giving
different corona levels will be significant.
Similarly any force measurements will be disturbed by electrostatic
attraction to adjacent structures.
To keep some association with Tesla coils I have observed that, while
small coils drive ionic spinners quite well (where corona thrust is also
used), a large(ish) Tesla coil has almost no effect.
http://tesladownunder.com/Lifters.htm#IonicSpinners
Cheers
Peter