RE: my coils not up to snuff

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

Original poster: "Mark W. Stolz" <mark_w_stolz-at-hotmail-dot-com> 

Sam,

Without knowing the major diameter of your toroid stack I can't give you an 
exact answer, but it looks like you'll need more turns on your primary in 
order to tune the coil.  I also see that you are running a resonant value 
cap.  Unless you have your safety gap, which isn't listed, it's very 
possible for you to kill your NST.  You will want to add at least a muffin 
fan to your spark gap to aid in quenching.

Hope this helps,

Mark Stolz
Pearland, TX
http://teslacoils4christ-dot-org/

>Original poster: "Sam W." <HAZAA_69-at-hotmail-dot-com>
>
>
>I have a coil running on a 12/60 nst
>4.5" x 30" secondary w/21 AWG magnet wire
>Primary:8 turns of 10 AWG insulated wire
>Spark gap is a single static with no pressurized air for quenching
>mmc 25 0.33 uF caps rated at 600VAC in series to make 12500VAC 0.0133uF
>choke 200 turns 21 AWG
>4" flexible aluminum ducting covered in aluminum tape
>2" flex aluminum ducting covered in aluminum tape
>(double toroid)
>
>im getting like 3" breakout, with only 9" going to a grounded pole. I 
>couldnt get any thin walled copper tubing, so i used insulated wire rated 
>at 15 kv. if i replace the primary and change the spark gap will i get 
>bigger sparks? im reading about people with similar setups getting like 
>3-4 ft. sparks. This was my first coil, and i did it for science fair. I 
>was a little dissapointed with performance. I dont want to use a rotary 
>gap, cause i cant get a synchronous motor, and asynchs will blow my nst. 
>PLEASE HELP!
>