Re: Can't get a good bang

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

Original poster: BunnyKiller <bunikllr-at-bellsouth-dot-net> 

Hey Steve....

seems as if most of your coil is in good condition ( nice finish job on the 
secondary!)    the one thing I did notice was that your toroid is on the 
meekish side...   remake the toroid to a ratio of

toroid tube dia = the dia of the secondary
toroid total width = approximately 3/4 - 1 times the length of your 
secondary winding

e.g.    secondary dia = 4"  toroid tube dia = 4"
winding length = 20"   outer dia of toroid = 15-20"

this should get you into a 20-25" streamer length when properly tuned.

Scot D


Tesla list wrote:

>Original poster: "steve" <steve_vance-at-cablelynx-dot-com>
>Hi list,
>
>I just got finished with my small 5-30 NST powered coil. I am getting
>streamers about 6-8" long into the air and, about 11" to a grounded wire.
>The problem is that they are thin and wispy. I believe the coil is in tune,
>If I move one turn in or out the streamer length decreases. The problem
>seems to be the spark gap. I'm not getting the usual loud bang that I get if
>I unhook the coil and run the transformer and caps on the gap by themselves.
>If I open the gap over about 5/16" when it is on the coil It won't arc at
>all. Without the coil I can open it up to about 3/8" and get a nice loud
>bang. What gives? I used 10AWG solid wire to connect everything. All the
>connections are soldered ring terminals. Any suggestions?  You can see it
>here http://fire.prohosting-dot-com/~bonestc/babycoil.html
>
>Steve Vance
>
>