TC resonance estimation?

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

Original poster: "Mike Panetta by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ahuitzot-at-mindspring-dot-com>

I have looked at a couple of sites that have programs that calculate the
resonance of a coil for you, and even an excel spread sheet that I think
does the same, but I use linux almost exclusivly so I cannot really run
any of these programs.  So I guess my basic question is, what in general
would I have to do to wind a tesla coil that will resonate at a
frequency lower then 150KHz?  I want to try my hand at building a direct
drive SSTC with some specialized flyback type transformers I have, but I
have no clue where to start really.  Do I need to know what the
resonance frequency of the secondary of my drive transformer is?  How do
I figure out the combined resonance frequency of the coil in this
config?  The request for a low resonance frequency is because I want to
use IGBT's instead of FET's (mainly because I have some already, and I
know they work well to drive the flyback) and they only work up to
150KHz (well thats what the spec sheet says anyway...).

If possible I would like this to be a smallish coil, as its my first and
I would prefer function over spark length to start with :)

Thanks for any help,

Mike