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Help designing 18 inch coil
Original poster: "Peter Terren by way of Terry Fritz <teslalist-at-qwest-dot-net>" <pterren-at-iinet-dot-net.au>
I am going ahead with an 18 inch coil and have had a very nice 18 x 59 inch
former made up from polypropylene. I am a bit undecided about construction
of the secondary. I have a feeling that 54 inches of 21 G at 1680 turns
would be reasonable as I have a preference for a high inductance, large
toroid system as this seemed to be good for my 6 inch coil with sparks of
96 inches = 3 times the secondary length of 32 inches. I also have a
preference for a large diameter primary possibly even with fairly high (but
more even coupling) as per Richard Hull's Nemesis.
What would other people do (and more importantly, why)?
Peter (Tesla Downunder)