Re: first, second and third light of a flat coil

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Marc -

Do you know where the coupling is set? Kind of curious how high it is at
this time. Dave reported
problems in this area which is why I decided to build a flat primary and
place under the flat
secondary so the coupling could be easily adjusted with some linearity.
Coupling can get real high on
these flat coils.

Are the wires coated? If so, what did you use (I still need to do this
before firing my coil up but
I'm still trying to figure out how to keep the cosmetics nice. I don't want
any parameters to change
due to coating other than the capacitive effects of the coating itself).

Take care,
Bart

Tesla list wrote:

> Original poster: "marc metlicka by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net>
>
> Well,
>  To give an update of my 20" flat coil to date:
> I wound a somewhat conical primary that hangs under the secondary, 70
> deg. angled inward, 11 turns at 20" in.
>   Racing arcs along the sec. windings are a real problem. I tried ground
> out and ground in. It just seems that no mater what, they race? The arcs
> show some good potential, I just need to get them to a topload?
>  Longitudinal, shortatudinal or frustratingatudinal, this is a
> challenging coil! Space wound with heavy wire would help in this, but
> then we wouldn't learn?
>   I'll keep playing and report as i go,
> Marc M.