Overcoupling

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Original poster: "C. Sibley" <a37chevy@xxxxxxxxx>

I've pretty much pushed my 60mA 2" secondary coil to
it's limit, getting 30" sparks.  I adjusted the
primary-secondary coupling and am running coupling
just below where I see running sparks.

I have a 120mA transformer that was originally planned
for another project, hat I'm now considering throwing
into the little coil for giggles.

Question, will this throw me over the edge and make it
over coupled, or is coupling purely a function of the
geometry of the primary and secondary?

If I make the swap and need to raise the secondary to
reduce coupling, will the higher current of the
transformer help my spark length more than decreasing
the coupling will decrease it?  i.e. is it worth
doing?

I'm in the process of building a PT powered 6" coil,
not sure I want to expend the effort on the little
coil unless it would be cool :-)

Thanks,

Curt.