More Coupling...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "BunnyKiller" <bigfoo39-at-telocity-dot-com> 

Hi All...

while reading all of the coupling threads, I began to wonder about the
coupling of
a helical primary and if anyone has done any experimenting on the distance from
the secondary. ( e.g. instead of having a helical primary say 2" from the
secondary , how about having it 6 or 8" from the secondary?)

would this extra distance decrease the coupling or would it matter?

it seems most of us use the 1-2" distance of primary/secondary distance to
prevent
pri/sec flashover. ( this is on conicals and flats)

another thought .....   what do yall think about a parabolic curve instead of a
conical? you would have the reduced coupling near the secondary form (( inner
turns of the primary would be nearly flat or conical)) but in addition a
helical
style coupling factor at the outer edges of the primary?( more parallel to the
secondary)

if any of you have any input to this id like to hear from yall before i
spend 40$
or so on tubing to try this ;)

Scot D