[TCML] RE: longer sparks?
brandonhendershot at gmail.com
Sat Mar 12 20:48:46 MST 2011
First and foremost, you should upgrade your ground, whether you can install a ground rod or simply make a better counterpoise, you should really try to not use aluminum foil. If you absolutely can't install a rod, try to It make a counterpoise out of screen door screening, or hardware clothe which is much more durable and generally reliable.
That alone should give you a little performance boost.You can also try to add another larger toroid on top of your existing one and retune the primary coil as best as you can.
You're static gap should work just fine, just as long as you have it set right. Upgrading to a RSG would help the most, but you may as well just upgrade the entire coil in my opinion...
Last thing I can suggest, is to use a thicker gauge wire in your primary circuit. I'm not sure what you have now, but I believe you should use 12-10AWG(?) wire in your primary anywhere beyond the capacitor bank, where power is highest.
Hope some of this helps you,
On Mar 12, 2011, at 6:06 PM, Etienne Dreyer <chemistets at hotmail.com> wrote:
> Hi gang,
> I've just completed a coil, but am not getting the spark lengths that I expected. I am only getting weak 20" max, whereas I saw from sites like loneoceans and greg's garage tesla that TCs very similar to mine easily make 3ft and beyond. Could you guys give some suggestions on what I could do to get longer sparks? Here are some of my specifications:
> It is tuned
> Dual mot with voltage doubler
> 4" x 18" (actual coil length) secondary wrapped with 26AWG
> 10 turn primary
> 45nF @ 20KV capacitor
> It is not well grounded- simply a sheet of aluminum foil on the ground
> It does not have a very large toroid - 3" air duct with diameter of 13"
> Single static spark gap (I'm going to upgrade to a ARSG)
> Could the latter three issues be making such a big deal?
> Very much appreciated,
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