Re: I'm a newbie coiler!- apartment coiling

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: FIFTYGUY@xxxxxxx 

In a message dated 3/13/06 5:05:53 AM Eastern Standard Time, 
tesla@xxxxxxxxxx writes:

>One good solution to a poor, distant ground is to build a twin TC.  This is
>made up of  two identical coils that act as each other's counterpoise.
>Primaries are connected is series, each having half the inductance of a
>single coil.

    I've looked at doing a twin system, and this primary 
configuration has bugged me.
    Say you have a nice, well-tuned sngle-secondary TC. But then you 
want to make it a twin. Well, if you connect the primaries in series, 
you have twice the inductance. And thus you have to use half the 
primary capacitance to retune the primary. And thus you give up half 
your power and your twin spark length will go to only 1.4 times the 
length of the original coil (oversimplifying things?) instead of 
twice the length.
    Better to keep the same inductance by redesigning each twin 
primary to be 1/2 the original's inductance, but maintain same 
coupling to each secondary?
    Has anybody ever run a twin with *parallel* primaries?

-Phil LaBudde