Inductor Interference

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

Original poster: "Sam Beck by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Sam-at-peterbeck-dot-com>

	Hey all,

	I thought I'd try to redo my 3 inch coil to optimize performance,
I'm getting 12 inch arcs now.  I'm rewinding the secondary, 3X12 inches,
with 28 Ga wire.  The spark gap is getting changed from a two-gap RQ to a
more-than-two-gap SD.  The primary is being rewound on a 30-degree inverse
conical form.  There is one problem, the resonant frequency of the
secondary is lower than the space allows for tapping out.  So there are two
solutions:
	One-Increase the value of the capacitor.  I don't what the maximum
amount is for LTR, but if anyone has it, I'd appreciate it.
	Two-Add some extra inductance.  This is what I've been doing so
far.  The only problem I see is that if I mount the helical extra inductor
onto the base, directly under the primary coil(and with only 1/2 inch of
HDPE separating them) with their axes parallel, there could be some kind of
destructive or degrading interference as their magnetic fields interact.
Comments anyone?

	Sam Beck